US Airforce Airfield Systems Quiz

1. Light guns serve the purpose of signaling the aircraft, vehicles, and personnel on the

Adjacent roads.

Runways and taxiways.

Roads adjacent to the navigational equipment.

Gravel pavement adjacent to the navigational equipment.

Light guns are used to signal aircraft, vehicles, and personnel on runways and taxiways. These areas are crucial for the safe movement of aircraft and require clear communication between air traffic controllers and pilots. Light guns provide a visual means of communication, allowing controllers to direct traffic and indicate important instructions or warnings. The use of light guns on adjacent roads, gravel pavements, or navigational equipment would not serve the same purpose or be as effective in ensuring safe operations on runways and taxiways.

Explanation

Light guns are used to signal aircraft, vehicles, and personnel on runways and taxiways. These areas are crucial for the safe movement of aircraft and require clear communication between air traffic controllers and pilots. Light guns provide a visual means of communication, allowing controllers to direct traffic and indicate important instructions or warnings. The use of light guns on adjacent roads, gravel pavements, or navigational equipment would not serve the same purpose or be as effective in ensuring safe operations on runways and taxiways.

2. How do the three barometer outputs provide barometric pressure data in the automated meteorological station, AN/FMQ–19?

The output with the highest value is used to determine station pressure.

The output with the lowest value is used to determine station pressure.

The three barometer output values are averaged in order to determine station pressure.

The three barometer output values are added together in order to determine station pressure

The three barometer output values are averaged in order to determine station pressure. By taking the average of the three values, it helps to eliminate any potential outliers or errors in individual readings, providing a more accurate representation of the barometric pressure.

Explanation

The three barometer output values are averaged in order to determine station pressure. By taking the average of the three values, it helps to eliminate any potential outliers or errors in individual readings, providing a more accurate representation of the barometric pressure.

3. The tactical air navigation system, AN/TRN–26, provides radio navigation information for up to how many aircraft simultaneously?

100.

120.

150.

170.

The AN/TRN-26 tactical air navigation system is capable of providing radio navigation information for up to 100 aircraft simultaneously. This means that the system can handle and provide navigation data to a maximum of 100 aircraft at the same time.

Explanation

The AN/TRN-26 tactical air navigation system is capable of providing radio navigation information for up to 100 aircraft simultaneously. This means that the system can handle and provide navigation data to a maximum of 100 aircraft at the same time.

4. The tactical air navigation system, AN/TRN–41, can provide azimuth, distance, and identification information for how many aircraft simultaneously?

100.

120.

150.

170.

The tactical air navigation system, AN/TRN-41, is capable of providing azimuth, distance, and identification information for up to 100 aircraft simultaneously.

Explanation

The tactical air navigation system, AN/TRN-41, is capable of providing azimuth, distance, and identification information for up to 100 aircraft simultaneously.

5. In the automated meteorological station, AN/FMQ–19, which sensor group normally contains a complete set of sensors?

Primary sensor group.

Midfield sensor group.

Secondary sensor group.

Mid-infrared pathogen sensor group.

The primary sensor group in the automated meteorological station, AN/FMQ-19, normally contains a complete set of sensors. This means that all the essential sensors required for measuring and monitoring weather parameters are included in this group. The primary sensor group plays a crucial role in providing accurate and reliable meteorological data, which is vital for weather forecasting and analysis.

Explanation

The primary sensor group in the automated meteorological station, AN/FMQ-19, normally contains a complete set of sensors. This means that all the essential sensors required for measuring and monitoring weather parameters are included in this group. The primary sensor group plays a crucial role in providing accurate and reliable meteorological data, which is vital for weather forecasting and analysis.

6. What piece of equipment is the primary means of communication control and the interface between the operator and central equipment in the enhanced terminal voice switch?

Operator communications unit.

Tower electronic device.

Operator control unit.

Touch entry display.

The primary means of communication control and the interface between the operator and central equipment in the enhanced terminal voice switch is the touch entry display. This device allows the operator to input commands and control the communication system efficiently. It provides a user-friendly interface for the operator to interact with the central equipment, making it the most suitable option for this role.

Explanation

The primary means of communication control and the interface between the operator and central equipment in the enhanced terminal voice switch is the touch entry display. This device allows the operator to input commands and control the communication system efficiently. It provides a user-friendly interface for the operator to interact with the central equipment, making it the most suitable option for this role.

7. What assembly monitors the various functional groups in the tactical control tower, AN/MSN–7?

Monitor control panel.

Local operating network.

Environmental control unit.

Land mobile radio.

The correct answer is the monitor control panel. The monitor control panel is responsible for monitoring the various functional groups in the tactical control tower. It allows operators to monitor and control different systems and equipment in the tower, ensuring smooth operations and effective communication.

Explanation

The correct answer is the monitor control panel. The monitor control panel is responsible for monitoring the various functional groups in the tactical control tower. It allows operators to monitor and control different systems and equipment in the tower, ensuring smooth operations and effective communication.

8. Upon the detection of parameter faults, the tactical air navigation system, AN/TRN–26, transponder will

Stop emitting squitter.

Switch frequencies.

Ignore all faults.

Shutdown.

Upon the detection of parameter faults, the tactical air navigation system, AN/TRN–26, will shutdown. This means that the system will completely turn off and cease all operations. This is likely done to prevent any further damage or errors caused by the parameter faults. Shutting down the system allows for troubleshooting and repairs to be made before it is restarted.

Explanation

Upon the detection of parameter faults, the tactical air navigation system, AN/TRN–26, will shutdown. This means that the system will completely turn off and cease all operations. This is likely done to prevent any further damage or errors caused by the parameter faults. Shutting down the system allows for troubleshooting and repairs to be made before it is restarted.

9. Where is the enhanced terminal voice switch maintenance position located?

In the bottom floor of the air traffic control (ATC) tower.

In the central equipment racks.

At the transmit/receive site.

In the ATC tower cab.

The enhanced terminal voice switch maintenance position is located in the central equipment racks. This means that the maintenance position is not in the bottom floor of the ATC tower, at the transmit/receive site, or in the ATC tower cab.

Explanation

The enhanced terminal voice switch maintenance position is located in the central equipment racks. This means that the maintenance position is not in the bottom floor of the ATC tower, at the transmit/receive site, or in the ATC tower cab.

10. What capabilities can be provided at the enhanced terminal voice switch maintenance position?

System monitor capability only.

The same as at any operator position.

All functions accept operator position monitor.

All functions accept active tower-to-aircraft channels.

The correct answer is "The same as at any operator position." This means that the enhanced terminal voice switch maintenance position has the same capabilities as any other operator position. This implies that it can perform all the functions that an operator position can, including monitoring, system maintenance, and communication with active tower-to-aircraft channels.

Explanation

The correct answer is "The same as at any operator position." This means that the enhanced terminal voice switch maintenance position has the same capabilities as any other operator position. This implies that it can perform all the functions that an operator position can, including monitoring, system maintenance, and communication with active tower-to-aircraft channels.

11. Which enhanced terminal voice switch assembly is capable of changing system passwords and displaying system fault location?

Local position.

Flight data position.

Supervisory configuration terminal.

Configuration and control subsystem.

The supervisory configuration terminal is the enhanced terminal voice switch assembly that is capable of changing system passwords and displaying system fault location. This terminal is responsible for supervising and controlling the configuration and operation of the system. It has the necessary capabilities to manage passwords and provide fault location information, making it the correct answer to the question.

Explanation

The supervisory configuration terminal is the enhanced terminal voice switch assembly that is capable of changing system passwords and displaying system fault location. This terminal is responsible for supervising and controlling the configuration and operation of the system. It has the necessary capabilities to manage passwords and provide fault location information, making it the correct answer to the question.

12. The tactical air navigation system, AN/TRN–41 as a system, can operate on what tactical air navigation (TACAN) channels?

All “Y” channels.

All “X” channels.

All TACAN channels.

“X” high band channels only.

The correct answer is "All TACAN channels." This means that the tactical air navigation system, AN/TRN-41, can operate on any channel within the TACAN system. It is not limited to specific channels such as only "Y" or "X" channels, or only "X" high band channels. The system is capable of functioning on all available TACAN channels.

Explanation

The correct answer is "All TACAN channels." This means that the tactical air navigation system, AN/TRN-41, can operate on any channel within the TACAN system. It is not limited to specific channels such as only "Y" or "X" channels, or only "X" high band channels. The system is capable of functioning on all available TACAN channels.

13. What is the range of wind speeds that can be measured by the automated meteorological station, AN/FMQ–19, wind sensor?

0 – 130 miles per hour (mph).

0 – 100 mph.

10 – 130 mph.

10 – 100 mph.

The range of wind speeds that can be measured by the automated meteorological station, AN/FMQ-19, wind sensor is 0 - 130 miles per hour (mph).

Explanation

The range of wind speeds that can be measured by the automated meteorological station, AN/FMQ-19, wind sensor is 0 - 130 miles per hour (mph).

14. What major improvement does the AN/GRC–171BV4 Have-Quick-Radio possess that the AN/GRC–171 radio does not have?

Amplitude modulation capability.

Frequency demodulation capability.

Hydraulic actuated servo tuning.

Electronically tuned preselector which replaces the servo.

The AN/GRC-171BV4 Have-Quick-Radio has an electronically tuned preselector that replaces the servo, which is a major improvement compared to the AN/GRC-171 radio. This means that the BV4 model can electronically tune the preselector, allowing for more precise and efficient tuning of frequencies. This improvement eliminates the need for a hydraulic actuated servo, making the radio more reliable and easier to maintain.

Explanation

The AN/GRC-171BV4 Have-Quick-Radio has an electronically tuned preselector that replaces the servo, which is a major improvement compared to the AN/GRC-171 radio. This means that the BV4 model can electronically tune the preselector, allowing for more precise and efficient tuning of frequencies. This improvement eliminates the need for a hydraulic actuated servo, making the radio more reliable and easier to maintain.

15. Redundancy of the enhanced terminal voice switch is accomplished by allowing how many radio processor cards to be associated with each frequency?

Four.

Three.

Two.

One.

The enhanced terminal voice switch achieves redundancy by allowing two radio processor cards to be associated with each frequency. This means that in case one card fails, the other card can still handle the communication on that frequency, ensuring uninterrupted service.

Explanation

The enhanced terminal voice switch achieves redundancy by allowing two radio processor cards to be associated with each frequency. This means that in case one card fails, the other card can still handle the communication on that frequency, ensuring uninterrupted service.

16. What does the tactical air navigation system, AN/TRN–26, receiver-transmitter do to hold the average output power level constant?

Increases reply pulse spacing.

Increases antenna rotation rate.

Adjusts output modulation levels.

Inserts random squitter transmissions.

The tactical air navigation system, AN/TRN-26, receiver-transmitter holds the average output power level constant by inserting random squitter transmissions. Squitter transmissions are unmodulated pulses that are randomly inserted into the system's output. These random squitter transmissions help maintain a constant average power level by compensating for any fluctuations or variations in the system's output power.

Explanation

The tactical air navigation system, AN/TRN-26, receiver-transmitter holds the average output power level constant by inserting random squitter transmissions. Squitter transmissions are unmodulated pulses that are randomly inserted into the system's output. These random squitter transmissions help maintain a constant average power level by compensating for any fluctuations or variations in the system's output power.

17. The tactical air navigation system, AN/TRN–41 antenna is an all band, direct drive, mechanically rotated antenna that operates over the whole range of the TACAN frequencies from

962–1213MHz.

962–1413MHz.

1062–1213 MHz.

1062–1413 MHz.

The correct answer is 962–1213MHz. This is because the tactical air navigation system, AN/TRN–41 antenna operates over the whole range of TACAN frequencies from 962–1213MHz.

Explanation

The correct answer is 962–1213MHz. This is because the tactical air navigation system, AN/TRN–41 antenna operates over the whole range of TACAN frequencies from 962–1213MHz.

18. Where are the barometers/altimeters, AN/ML–102, usually located?

In a place with direct sunlight.

In a place with indirect sunlight.

In a place where the temperature changes.

In a place where the temperature is constant.

Barometers/altimeters, AN/ML-102, are usually located in a place where the temperature is constant. This is because temperature fluctuations can affect the accuracy of these instruments. By keeping them in a place with a constant temperature, the readings obtained from the barometers/altimeters will be more reliable and accurate.

Explanation

Barometers/altimeters, AN/ML-102, are usually located in a place where the temperature is constant. This is because temperature fluctuations can affect the accuracy of these instruments. By keeping them in a place with a constant temperature, the readings obtained from the barometers/altimeters will be more reliable and accurate.

19. What is the maximum number of cloud bases the automated meteorological station, AN/FMQ–19, ceilometer can detect?

One

Two

Three

Four

The automated meteorological station, AN/FMQ-19 ceilometer, can detect a maximum of three cloud bases. This means that it is capable of measuring and identifying the height of up to three different cloud layers in the atmosphere.

Explanation

The automated meteorological station, AN/FMQ-19 ceilometer, can detect a maximum of three cloud bases. This means that it is capable of measuring and identifying the height of up to three different cloud layers in the atmosphere.

20. Which enhanced terminal voice switch assembly is responsible for interfacing between the demarcation panel and radio processor cards?

Radio distribution panel.

Radio conferencer panel.

Supervisory configuration terminal.

Radio subsystem configuration panel.

The radio distribution panel is responsible for interfacing between the demarcation panel and radio processor cards. It is designed to distribute voice and data signals to various radio systems and provides a centralized control and monitoring interface. The other options mentioned, such as the radio conferencer panel, supervisory configuration terminal, and radio subsystem configuration panel, do not specifically mention the role of interfacing between the demarcation panel and radio processor cards. Therefore, the correct answer is the radio distribution panel.

Explanation

The radio distribution panel is responsible for interfacing between the demarcation panel and radio processor cards. It is designed to distribute voice and data signals to various radio systems and provides a centralized control and monitoring interface. The other options mentioned, such as the radio conferencer panel, supervisory configuration terminal, and radio subsystem configuration panel, do not specifically mention the role of interfacing between the demarcation panel and radio processor cards. Therefore, the correct answer is the radio distribution panel.

21. In the digital voice recording system, what is the recording capacity of each digital audiotape?

100 linear hours.

500 linear hours.

750 linear hours.

1000 linear hours.

The correct answer is 500 linear hours. This means that each digital audiotape in the digital voice recording system can record up to 500 hours of audio.

Explanation

The correct answer is 500 linear hours. This means that each digital audiotape in the digital voice recording system can record up to 500 hours of audio.

22. Which of the tactical air navigation system, AN/TRN–41, pulse-modulated signals has the highest transmission priority?

Station identification.

North reference burst.

Auxiliary reference burst.

Distance measuring signal.

The correct answer is North reference burst. In the tactical air navigation system, AN/TRN–41, the North reference burst has the highest transmission priority. This burst is used to provide a reference for determining the aircraft's heading or direction. It is crucial for accurate navigation and is given priority to ensure that the aircraft receives the necessary information for maintaining its course.

Explanation

The correct answer is North reference burst. In the tactical air navigation system, AN/TRN–41, the North reference burst has the highest transmission priority. This burst is used to provide a reference for determining the aircraft's heading or direction. It is crucial for accurate navigation and is given priority to ensure that the aircraft receives the necessary information for maintaining its course.

23. In the digital voice recording system, how many satellites need to be acquired by the global positioning system receiver for an accurate time stamp?

One.

Two.

Three.

Four.

In order to obtain an accurate time stamp in a digital voice recording system, the global positioning system receiver needs to acquire signals from three satellites. This is because the receiver uses the signals from multiple satellites to triangulate its position and calculate the precise time. By acquiring signals from at least three satellites, the receiver can accurately determine the time and synchronize it with the digital voice recording system.

Explanation

In order to obtain an accurate time stamp in a digital voice recording system, the global positioning system receiver needs to acquire signals from three satellites. This is because the receiver uses the signals from multiple satellites to triangulate its position and calculate the precise time. By acquiring signals from at least three satellites, the receiver can accurately determine the time and synchronize it with the digital voice recording system.

24. What radio system provides simplex HF radio communications capabilities in the 1.6 to 29.999 MHz (10 Hz synthesized steps) frequency range?

AN/GRC–171.

AN/URC–119.

AN/FRN–45.

AN/FMQ–19.

The AN/URC-119 radio system provides simplex HF radio communications capabilities in the 1.6 to 29.999 MHz frequency range.

Explanation

The AN/URC-119 radio system provides simplex HF radio communications capabilities in the 1.6 to 29.999 MHz frequency range.

25. In the enhanced terminal voice switch during radio communications, in what form does microphone audio travel from the operator position to the central equipment?

Encrypted.

Digital.

Analog.

Cipher.

The microphone audio travels from the operator position to the central equipment in digital form. This means that the audio signals are converted into a series of binary digits (0s and 1s) before being transmitted. This allows for more efficient and reliable transmission, as digital signals are less susceptible to interference and can be easily processed and manipulated by the central equipment. Encryption, cipher, and analog forms are not mentioned in the question and therefore are not relevant to the answer.

Explanation

The microphone audio travels from the operator position to the central equipment in digital form. This means that the audio signals are converted into a series of binary digits (0s and 1s) before being transmitted. This allows for more efficient and reliable transmission, as digital signals are less susceptible to interference and can be easily processed and manipulated by the central equipment. Encryption, cipher, and analog forms are not mentioned in the question and therefore are not relevant to the answer.

26. The precision approach radar in the AN/TPN–19 provides both azimuth and elevation information from?

20 nautical miles (nm) to touchdown.

19 nm to touchdown.

18 nm to touchdown.

17nm to touchdown.

The precision approach radar in the AN/TPN-19 provides both azimuth and elevation information from 20 nautical miles (nm) to touchdown.

Explanation

The precision approach radar in the AN/TPN-19 provides both azimuth and elevation information from 20 nautical miles (nm) to touchdown.

27. Relative distance information is provided to aircraft by the mobile microwave landing system, AN/TRN–45, by

Mobile microwave marker beacons.

Elevation transmitting equipment.

Azimuth transmitting equipment.

Distance measuring equipment/precision transponder equipment.

The mobile microwave landing system, AN/TRN-45, provides relative distance information to aircraft using distance measuring equipment/precision transponder equipment. This equipment allows the system to accurately measure the distance between the aircraft and the landing area, ensuring safe and precise navigation during landing.

Explanation

The mobile microwave landing system, AN/TRN-45, provides relative distance information to aircraft using distance measuring equipment/precision transponder equipment. This equipment allows the system to accurately measure the distance between the aircraft and the landing area, ensuring safe and precise navigation during landing.

28. The uninterruptible power supply for the digital voice recording system is designed to provide power for

One minute.

Two minutes.

Three minutes.

Five minutes.

The uninterruptible power supply for the digital voice recording system is designed to provide power for five minutes. This means that in the event of a power outage, the system will continue to function for a duration of five minutes before it shuts down. This is important for ensuring that any ongoing voice recordings are not lost or interrupted during a power failure. A longer power supply duration would be beneficial in case the power outage lasts longer or if there is a need to safely shut down the system.

Explanation

The uninterruptible power supply for the digital voice recording system is designed to provide power for five minutes. This means that in the event of a power outage, the system will continue to function for a duration of five minutes before it shuts down. This is important for ensuring that any ongoing voice recordings are not lost or interrupted during a power failure. A longer power supply duration would be beneficial in case the power outage lasts longer or if there is a need to safely shut down the system.

29. What is the purpose of the blower located in the automated meteorological station, AN/FMQ–19, relative humidity/air temperature sensor?

Stop snow from accumulating around the indicator probe.

Maintain a steady air temperature for accurate measurements.

Prevent damage to electronic components during extremely hot weather.

Provide fresh air to the dewpoint indicator probe for accurate measurements.

The purpose of the blower located in the automated meteorological station, AN/FMQ-19, relative humidity/air temperature sensor is to provide fresh air to the dewpoint indicator probe for accurate measurements. The blower helps to ensure that the air around the probe is constantly refreshed, preventing any stagnant air from affecting the accuracy of the measurements. This is important because accurate measurements of humidity and temperature are crucial in meteorology for forecasting weather conditions.

Explanation

The purpose of the blower located in the automated meteorological station, AN/FMQ-19, relative humidity/air temperature sensor is to provide fresh air to the dewpoint indicator probe for accurate measurements. The blower helps to ensure that the air around the probe is constantly refreshed, preventing any stagnant air from affecting the accuracy of the measurements. This is important because accurate measurements of humidity and temperature are crucial in meteorology for forecasting weather conditions.

30. In the digital voice recording system (DVRS), what controls the operation of the digital recording unit?

Touch entry display.

Supervisor configuration terminal.

DVRS workstation.

Gateway interface cards.

The DVRS workstation controls the operation of the digital recording unit in the digital voice recording system. It is responsible for managing the recording process, storing the recorded data, and providing access to the recordings. The workstation acts as the central control unit for the DVRS, allowing users to start, stop, and manage recordings, as well as retrieve and playback recorded data. It is an essential component in ensuring the smooth operation of the digital recording system.

Explanation

The DVRS workstation controls the operation of the digital recording unit in the digital voice recording system. It is responsible for managing the recording process, storing the recorded data, and providing access to the recordings. The workstation acts as the central control unit for the DVRS, allowing users to start, stop, and manage recordings, as well as retrieve and playback recorded data. It is an essential component in ensuring the smooth operation of the digital recording system.

31. The tactical air navigation system, AN/TRN–41, can provide azimuth and identity information to how many aircraft simultaneously?

Up to 100.

Up to 120.

Up to 150.

An unlimited number.

The tactical air navigation system, AN/TRN-41, is capable of providing azimuth and identity information to an unlimited number of aircraft simultaneously. This means that there is no maximum limit to the number of aircraft that can receive this information from the system at the same time.

Explanation

The tactical air navigation system, AN/TRN-41, is capable of providing azimuth and identity information to an unlimited number of aircraft simultaneously. This means that there is no maximum limit to the number of aircraft that can receive this information from the system at the same time.

32. The antenna height of the tactical air navigation system, AN/TRN–26, is adjustable between

1.5 and 8.5 feet above ground level.

3.5 and 8.5 feet above ground level.

6.5 and 10 feet above ground level.

7.5 and 10 feet above ground level.

The correct answer is 7.5 and 10 feet above ground level. This is because the question states that the antenna height of the tactical air navigation system, AN/TRN-26, is adjustable between certain ranges. Among the given options, only the range of 7.5 and 10 feet above ground level falls within the specified adjustable range.

Explanation

The correct answer is 7.5 and 10 feet above ground level. This is because the question states that the antenna height of the tactical air navigation system, AN/TRN-26, is adjustable between certain ranges. Among the given options, only the range of 7.5 and 10 feet above ground level falls within the specified adjustable range.

33. The alarms on the digital voice recording system alerts users when channels are

Inactive.

Shifting.

Off-key.

Active.

The correct answer is "inactive" because the alarms on the digital voice recording system are designed to notify users when channels are not in use or not producing any sound. This is important to ensure that the system is functioning properly and to avoid missing any important recordings.

Explanation

The correct answer is "inactive" because the alarms on the digital voice recording system are designed to notify users when channels are not in use or not producing any sound. This is important to ensure that the system is functioning properly and to avoid missing any important recordings.

34. In the tactical control tower, AN/MSN–7, how many VHF/UHF amplitude modulated portable transceivers in the communications shelter functional group?

Five.

Six.

Seven.

Eight.

The correct answer is seven because the question asks about the number of VHF/UHF amplitude modulated portable transceivers in the communications shelter functional group of the AN/MSN-7 tactical control tower.

Explanation

The correct answer is seven because the question asks about the number of VHF/UHF amplitude modulated portable transceivers in the communications shelter functional group of the AN/MSN-7 tactical control tower.

35. The tactical air navigation system, AN/TRN–41, the battery can supply power for full system operation for

72 hours.

24 hours.

12 hours.

4 hours.

The given correct answer is 4 hours. This implies that the battery of the tactical air navigation system, AN/TRN–41, is capable of providing power for the full system operation for only 4 hours. This indicates that the battery has a limited capacity and would need to be recharged or replaced after 4 hours of continuous use.

Explanation

The given correct answer is 4 hours. This implies that the battery of the tactical air navigation system, AN/TRN–41, is capable of providing power for the full system operation for only 4 hours. This indicates that the battery has a limited capacity and would need to be recharged or replaced after 4 hours of continuous use.

36. What action occurs when freezing rain accumulates on the freezing-rain sensor probe in the automated meteorological station, AN/FMQ–19?

The probe’s vibrational frequency decreases.

The probe’s vibrational frequency increases.

The probe’s capacitance decreases.

The probe’s capacitance increases.

When freezing rain accumulates on the freezing-rain sensor probe in the automated meteorological station, it causes the probe's vibrational frequency to decrease.

Explanation

When freezing rain accumulates on the freezing-rain sensor probe in the automated meteorological station, it causes the probe's vibrational frequency to decrease.

37. Based on technical data, how many people does it take to set up the tactical air navigation system, AN/TRN–26, in less than one hour?

Two.

Four.

Six.

Eight.

Based on technical data, it takes four people to set up the tactical air navigation system, AN/TRN–26, in less than one hour.

Explanation

Based on technical data, it takes four people to set up the tactical air navigation system, AN/TRN–26, in less than one hour.

38. The tactical air navigation system, AN/TRN–26, requires what operating voltage?

12 VDC.

24 VDC.

28 VDC.

32 VDC.

The correct answer is 28 VDC. The tactical air navigation system, AN/TRN-26, operates on a voltage of 28 VDC.

Explanation

The correct answer is 28 VDC. The tactical air navigation system, AN/TRN-26, operates on a voltage of 28 VDC.

39. A lightweight, portable, tactical air navigation system designed to provide a combat control team with a navigational aid is the

AN/GMQ–33.

AN/TMQ–36.

AN/TRN–26.

AN/TRN–41.

The AN/TRN-41 is the correct answer because it is a lightweight, portable, tactical air navigation system specifically designed to provide a combat control team with a navigational aid. The other options do not match this description.

Explanation

The AN/TRN-41 is the correct answer because it is a lightweight, portable, tactical air navigation system specifically designed to provide a combat control team with a navigational aid. The other options do not match this description.

40. What type of equipment could be used to determine ionospheric conditions and how they would affect radio propagation impacting Department of Defense systems?

AN/TPN–19.

AN/FMQ–12.

AN/MPN–12.

AN/GRC–171B(V)4.

The AN/FMQ-12 equipment could be used to determine ionospheric conditions and assess how they would affect radio propagation, specifically impacting Department of Defense systems. This equipment is designed to measure and analyze various aspects of the ionosphere, such as electron density, electron temperature, and ion composition. By understanding these ionospheric conditions, the Department of Defense can make informed decisions about their radio communication systems and potentially mitigate any adverse effects caused by ionospheric variations on radio propagation.

Explanation

The AN/FMQ-12 equipment could be used to determine ionospheric conditions and assess how they would affect radio propagation, specifically impacting Department of Defense systems. This equipment is designed to measure and analyze various aspects of the ionosphere, such as electron density, electron temperature, and ion composition. By understanding these ionospheric conditions, the Department of Defense can make informed decisions about their radio communication systems and potentially mitigate any adverse effects caused by ionospheric variations on radio propagation.

41. The external power amplifier in the tactical air navigation system, AN/TRN–41 provides how much gain to double the output of the receiver-transmitter twice?

One dB.

Three dB.

Six dB.

Nine dB.

The external power amplifier in the tactical air navigation system, AN/TRN-41 provides a gain of six dB to double the output of the receiver-transmitter twice. Gain is a measure of amplification, and a gain of six dB means that the output signal will be amplified by a factor of four (2^2). Therefore, to double the output twice, a gain of six dB is required.

Explanation

The external power amplifier in the tactical air navigation system, AN/TRN-41 provides a gain of six dB to double the output of the receiver-transmitter twice. Gain is a measure of amplification, and a gain of six dB means that the output signal will be amplified by a factor of four (2^2). Therefore, to double the output twice, a gain of six dB is required.

42. The tactical air navigation system, AN/TRN–41, has how many modes of operation?

One.

Two.

Three.

Four.

The correct answer is three because the question asks about the number of modes of operation for the tactical air navigation system, AN/TRN-41. This implies that the system has different modes in which it can operate, and the correct answer indicates that there are three such modes.

Explanation

The correct answer is three because the question asks about the number of modes of operation for the tactical air navigation system, AN/TRN-41. This implies that the system has different modes in which it can operate, and the correct answer indicates that there are three such modes.

43. The tactical air navigation system, AN/TRN–41, overall reply delay for "X" channel interrogations is

30±0.1 μs.

50±0.1 μs.

70±0.1 μs.

75±0.1 μs.

The correct answer is 50±0.1 μs. This means that the overall reply delay for "X" channel interrogations in the tactical air navigation system, AN/TRN–41, is 50 microseconds with a tolerance of ±0.1 microseconds.

Explanation

The correct answer is 50±0.1 μs. This means that the overall reply delay for "X" channel interrogations in the tactical air navigation system, AN/TRN–41, is 50 microseconds with a tolerance of ±0.1 microseconds.

44. During normal operation of the tactical control tower, AN/MSN–7, what voltage powers most shelter equipment?

+12 VDC.

+28 VDC.

+48 VDC.

115 VAC.

Most shelter equipment in the tactical control tower, AN/MSN-7, is powered by +28 VDC voltage during normal operation.

Explanation

Most shelter equipment in the tactical control tower, AN/MSN-7, is powered by +28 VDC voltage during normal operation.

45. When would an automated meteorological station, AN/FMQ–19, midfield sensor group be installed?

When an airfield location must meet Category I criteria.

When an airfield location must meet Category II criteria.

When an airfield location must meet Category III criteria.

When an airfield location must meet Category IV criteria.

The automated meteorological station, AN/FMQ-19, midfield sensor group would be installed when an airfield location must meet Category II criteria. This suggests that the station is specifically designed to gather meteorological data for airfields that need to meet the requirements of Category II criteria.

Explanation

The automated meteorological station, AN/FMQ-19, midfield sensor group would be installed when an airfield location must meet Category II criteria. This suggests that the station is specifically designed to gather meteorological data for airfields that need to meet the requirements of Category II criteria.

46. What category of operation is the mobile microwave landing system, AN/TRN–45, capable of when installed in a split-site configuration?

CAT I or CAT II.

CAT II or CAT III.

CAT I only.

CAT II only.

The mobile microwave landing system, AN/TRN-45, is capable of performing CAT I or CAT II operations when installed in a split-site configuration. This means that it can support both Category I and Category II precision approach and landing operations, providing pilots with accurate guidance and allowing for safe landings in various weather conditions.

Explanation

The mobile microwave landing system, AN/TRN-45, is capable of performing CAT I or CAT II operations when installed in a split-site configuration. This means that it can support both Category I and Category II precision approach and landing operations, providing pilots with accurate guidance and allowing for safe landings in various weather conditions.

47. The tactical air navigation system, AN/TRN–26, has time-coded pulses transmitted on any one of the

126 channels spaced 1-MHz apart.

128 channels spaced 1-MHz apart.

126 channels spaced 2-MHz apart.

128 channels spaced 2 MHz apart.

The tactical air navigation system, AN/TRN-26, has time-coded pulses transmitted on any one of the 126 channels spaced 1-MHz apart. This means that the system can transmit pulses on a total of 126 different channels, and each channel is spaced 1-MHz apart from the adjacent channel. This spacing allows for precise and accurate navigation as the system can transmit and receive signals on different frequencies, ensuring minimal interference and maximum coverage.

Explanation

The tactical air navigation system, AN/TRN-26, has time-coded pulses transmitted on any one of the 126 channels spaced 1-MHz apart. This means that the system can transmit pulses on a total of 126 different channels, and each channel is spaced 1-MHz apart from the adjacent channel. This spacing allows for precise and accurate navigation as the system can transmit and receive signals on different frequencies, ensuring minimal interference and maximum coverage.

48. What operating system does the supervisor configuration terminal of the enhanced terminal voice switch use?

DOS.

Linux.

Windows 98.

Windows XP.

The supervisor configuration terminal of the enhanced terminal voice switch uses DOS as its operating system.

Explanation

The supervisor configuration terminal of the enhanced terminal voice switch uses DOS as its operating system.

49. When does the digital voice recording system digital recording unit copy hard drive information to a digital audiotape?

Continuously.

Every 15 minutes.

Every 30 minutes.

Only when prompted by an operator.

The digital voice recording system's digital recording unit copies hard drive information to a digital audiotape every 15 minutes. This regular interval ensures that the data on the hard drive is consistently backed up to the audiotape, reducing the risk of data loss in case of any system failure or malfunction. This frequent backup also allows for easy retrieval and access to the recorded information when needed.

Explanation

The digital voice recording system's digital recording unit copies hard drive information to a digital audiotape every 15 minutes. This regular interval ensures that the data on the hard drive is consistently backed up to the audiotape, reducing the risk of data loss in case of any system failure or malfunction. This frequent backup also allows for easy retrieval and access to the recorded information when needed.

50. On improved roads the tactical control tower, AN/MSN–7, can be driven up to

50 mph.

55 mph.

60 mph.

65 mph.

The correct answer is 50 mph. This means that on improved roads, the tactical control tower AN/MSN-7 can be driven up to a maximum speed of 50 mph.

Explanation

The correct answer is 50 mph. This means that on improved roads, the tactical control tower AN/MSN-7 can be driven up to a maximum speed of 50 mph.

51. How many telephone lines are provided by each telephone processor in the enhanced terminal voice switch?

Four.

Three.

Two.

One.

Each telephone processor in the enhanced terminal voice switch provides only one telephone line.

Explanation

Each telephone processor in the enhanced terminal voice switch provides only one telephone line.

52. A typical air traffic control tower console is made up of how many operator positions in the enhanced terminal voice switch?

Three

Four

Five

Six

A typical air traffic control tower console is made up of five operator positions in the enhanced terminal voice switch.

Explanation

A typical air traffic control tower console is made up of five operator positions in the enhanced terminal voice switch.

53. A failed built-in test will be displayed in the mobile microwave landing system, AN/TRN– 45, at the

DME/P electronic unit (DEU) only.

Remote control/display unit (RC/DU) only.

DEU, RC/DU, or elevation (EL) control electronic unit (CEU) only.

DEU, RC/DU, EL CEU, or azimuth (AZ) CEU.

not-available-via-ai

Explanation

not-available-via-ai

54. In which tactical air navigation system, AN/TRN–41, mode does the antenna not rotate but the receiver-transmitter still transmits squitter, distance replies, and identification?

Tactical air navigation mode.

Distance measuring equipment only mode.

Demand only mode.

Continuous wave jamming avoidance mode.

In the distance measuring equipment only mode of the AN/TRN–41 tactical air navigation system, the antenna does not rotate. However, the receiver-transmitter still transmits squitter, distance replies, and identification. This mode is specifically designed for measuring the distance between the aircraft and a ground station, without the need for the antenna to rotate.

Explanation

In the distance measuring equipment only mode of the AN/TRN–41 tactical air navigation system, the antenna does not rotate. However, the receiver-transmitter still transmits squitter, distance replies, and identification. This mode is specifically designed for measuring the distance between the aircraft and a ground station, without the need for the antenna to rotate.

55. What determines the rotational speed of the tactical air navigation system, AN/TRN–26, antenna drive motor?

Applied current.

Applied voltage.

Phase of applied voltage.

Frequency of applied voltage.

The rotational speed of the tactical air navigation system's antenna drive motor is determined by the frequency of the applied voltage. The frequency of the voltage signal directly affects the speed at which the motor rotates. Higher frequencies result in faster rotation, while lower frequencies result in slower rotation. Therefore, the frequency of the applied voltage is the determining factor for the rotational speed of the motor.

Explanation

The rotational speed of the tactical air navigation system's antenna drive motor is determined by the frequency of the applied voltage. The frequency of the voltage signal directly affects the speed at which the motor rotates. Higher frequencies result in faster rotation, while lower frequencies result in slower rotation. Therefore, the frequency of the applied voltage is the determining factor for the rotational speed of the motor.

56. The primary power source for the tactical air navigation system, AN/TRN–41, is

A nickel-cadmium rechargeable battery.

A silver-zinc rechargeable battery.

Any 115/220 volts, alternating current source.

A diesel powered generator.

The primary power source for the tactical air navigation system, AN/TRN–41, is a silver-zinc rechargeable battery. This type of battery is commonly used in military applications due to its high energy density, long life, and ability to withstand harsh conditions. It provides a reliable and portable power source for the system, allowing it to operate effectively in various tactical situations.

Explanation

The primary power source for the tactical air navigation system, AN/TRN–41, is a silver-zinc rechargeable battery. This type of battery is commonly used in military applications due to its high energy density, long life, and ability to withstand harsh conditions. It provides a reliable and portable power source for the system, allowing it to operate effectively in various tactical situations.

57. The tactical air navigation system, AN/TRN–41 antenna support assembly allows the antenna to be set up on a slope of up to

4 degrees.

7.5 degrees.

10 degrees.

15 degrees.

The correct answer is 10 degrees. The tactical air navigation system, AN/TRN-41 antenna support assembly allows the antenna to be set up on a slope of up to 10 degrees.

Explanation

The correct answer is 10 degrees. The tactical air navigation system, AN/TRN-41 antenna support assembly allows the antenna to be set up on a slope of up to 10 degrees.

58. How many sensors within the meteorological functional group provide wind speed, wind direction, and temperature data in the tactical control tower, AN/MSN–7?

Two.

Three.

Four.

Five.

The correct answer is two. This means that within the meteorological functional group in the tactical control tower, AN/MSN-7, there are only two sensors that provide wind speed, wind direction, and temperature data.

Explanation

The correct answer is two. This means that within the meteorological functional group in the tactical control tower, AN/MSN-7, there are only two sensors that provide wind speed, wind direction, and temperature data.

59. The power supply in the tactical air navigation system, AN/TRN–26, converts the primary power to secondary regulated voltages of

+200, +25.2, +12.6, and –12.6 volts direct current (DC).

+200, +25.2, +12.6, and –12.6 volts alternating current (AC).

+25.2, +12.6, and –12.6 volts DC.

+25.2, +12.6, and –12.6 volts AC.

The power supply in the tactical air navigation system, AN/TRN–26, converts the primary power to secondary regulated voltages of +200, +25.2, +12.6, and –12.6 volts direct current (DC). This means that the power supply takes the incoming primary power and transforms it into these specific voltages in the form of direct current (DC). The system requires these specific voltages to operate properly, and the power supply ensures that the correct voltages are provided.

Explanation

The power supply in the tactical air navigation system, AN/TRN–26, converts the primary power to secondary regulated voltages of +200, +25.2, +12.6, and –12.6 volts direct current (DC). This means that the power supply takes the incoming primary power and transforms it into these specific voltages in the form of direct current (DC). The system requires these specific voltages to operate properly, and the power supply ensures that the correct voltages are provided.

60. The tactical air navigation system, AN/TRN–41, will indicate an alarm condition if a monitored parameter exceeds its alarm limits continuously for approximately

30 seconds.

15 seconds.

10 seconds.

5 seconds.

The correct answer is 5 seconds. The tactical air navigation system, AN/TRN-41, will indicate an alarm condition if a monitored parameter exceeds its alarm limits continuously for approximately 5 seconds.

Explanation

The correct answer is 5 seconds. The tactical air navigation system, AN/TRN-41, will indicate an alarm condition if a monitored parameter exceeds its alarm limits continuously for approximately 5 seconds.

61. Which parameter is continuously monitored by the tactical air navigation system, AN/TRN– 26's, radio frequency monitor?

Peak power.

Sideband amplitude.

Modulation percentage.

Antenna rotation speed.

The tactical air navigation system, AN/TRN-26, continuously monitors the peak power through its radio frequency monitor. This parameter is important as it helps determine the maximum power level of the signal being transmitted. By monitoring the peak power, the system can ensure that the transmitted signal is within the desired range and avoid any potential issues or interference. Therefore, peak power is the parameter that is continuously monitored by the AN/TRN-26's radio frequency monitor.

Explanation

The tactical air navigation system, AN/TRN-26, continuously monitors the peak power through its radio frequency monitor. This parameter is important as it helps determine the maximum power level of the signal being transmitted. By monitoring the peak power, the system can ensure that the transmitted signal is within the desired range and avoid any potential issues or interference. Therefore, peak power is the parameter that is continuously monitored by the AN/TRN-26's radio frequency monitor.

62. How long does it take the tactical air navigation system, AN/TRN–41, antenna to come up to its operating speed?

5 seconds.

10 seconds.

30 seconds.

60 seconds.

The tactical air navigation system, AN/TRN-41, antenna takes 10 seconds to come up to its operating speed.

Explanation

The tactical air navigation system, AN/TRN-41, antenna takes 10 seconds to come up to its operating speed.

63. The total interrogation plus squitter rate for the tactical air navigation system, AN/TRN–41, is

2500± 90 pulses per second.

2700± 90 pulses per second.

3500± 90 pulses per second.

7200± 90 pulses per second.

The correct answer is 2700± 90 pulses per second. This means that the total interrogation plus squitter rate for the tactical air navigation system, AN/TRN–41, is 2700 pulses per second with a variation of ± 90 pulses per second. This indicates that the system can operate at a rate between 2610 and 2790 pulses per second.

Explanation

The correct answer is 2700± 90 pulses per second. This means that the total interrogation plus squitter rate for the tactical air navigation system, AN/TRN–41, is 2700 pulses per second with a variation of ± 90 pulses per second. This indicates that the system can operate at a rate between 2610 and 2790 pulses per second.

64. When a mobile microwave landing system, AN/TRN–45, is installed as a collocated site, where are the azimuth and elevation stations placed?

At opposite ends of the runway.

Together near the runway stop end.

Together near the runway approach end.

At opposite ends of the runway taxiway.

The correct answer is "Together near the runway approach end." When a mobile microwave landing system, AN/TRN-45, is installed as a collocated site, the azimuth and elevation stations are placed together near the runway approach end. This placement allows for accurate tracking and measurement of the aircraft's position and altitude during landing. Placing the stations at opposite ends of the runway or on the runway taxiway would not provide the same level of precision and effectiveness in guiding the aircraft during landing.

Explanation

The correct answer is "Together near the runway approach end." When a mobile microwave landing system, AN/TRN-45, is installed as a collocated site, the azimuth and elevation stations are placed together near the runway approach end. This placement allows for accurate tracking and measurement of the aircraft's position and altitude during landing. Placing the stations at opposite ends of the runway or on the runway taxiway would not provide the same level of precision and effectiveness in guiding the aircraft during landing.

65. A condition that will cause a complete shutdown of the mobile microwave landing system, AN/TRN–45, is the shutdown of the

Azimuth equipment.

Elevation equipment.

Distance measuring equipment/precision (DME/P) and elevation equipment.

DME/P equipment.

The correct answer is azimuth equipment. The mobile microwave landing system, AN/TRN-45, relies on the azimuth equipment to determine the horizontal direction or bearing of the aircraft. If the azimuth equipment shuts down, it would result in a complete shutdown of the system as it would no longer be able to accurately guide the aircraft for landing. The elevation equipment and DME/P equipment are not directly responsible for the shutdown of the system.

Explanation

The correct answer is azimuth equipment. The mobile microwave landing system, AN/TRN-45, relies on the azimuth equipment to determine the horizontal direction or bearing of the aircraft. If the azimuth equipment shuts down, it would result in a complete shutdown of the system as it would no longer be able to accurately guide the aircraft for landing. The elevation equipment and DME/P equipment are not directly responsible for the shutdown of the system.

66. The power output of the tactical air navigation system, AN/TRN–41 is greater than

100 watts peak.

200 watts peak.

300 watts peak.

1000 watts peak.

The power output of the tactical air navigation system, AN/TRN-41, is stated to be greater than 100 watts peak. This means that the system is capable of producing power output that exceeds 100 watts at its peak performance. However, the exact power output is not specified beyond this threshold.

Explanation

The power output of the tactical air navigation system, AN/TRN-41, is stated to be greater than 100 watts peak. This means that the system is capable of producing power output that exceeds 100 watts at its peak performance. However, the exact power output is not specified beyond this threshold.

67. What radio system normally provides up to 500 watts of transmitted power with a power amplifier?

AN/FMQ–19.

AN/FRN–45.

AN/GRC–171.

AN/URC–119.

The AN/URC–119 radio system is known to provide up to 500 watts of transmitted power with a power amplifier.

Explanation

The AN/URC–119 radio system is known to provide up to 500 watts of transmitted power with a power amplifier.

68. The tactical air navigation system, AN/TRN–26, antenna support consists of how many major components?

Five.

Four.

Three.

Two.

The correct answer is three because the question asks for the number of major components in the antenna support of the tactical air navigation system, AN/TRN-26. The word "major" indicates that there are key components that make up the support system, and the answer options suggest different quantities. Therefore, the correct answer is three, implying that there are three significant components in the antenna support.

Explanation

The correct answer is three because the question asks for the number of major components in the antenna support of the tactical air navigation system, AN/TRN-26. The word "major" indicates that there are key components that make up the support system, and the answer options suggest different quantities. Therefore, the correct answer is three, implying that there are three significant components in the antenna support.

69. What item is required to provide opposite direction runway operations of the AN/MPN– 14K radar shelter?

Transportable turntable.

Bi-directional coupler.

Secondary radar.

Primary radar.

A transportable turntable is required to provide opposite direction runway operations of the AN/MPN-14K radar shelter. This suggests that the radar shelter needs to be able to rotate or reposition itself in order to provide coverage for both directions of the runway. The transportable turntable would allow the radar shelter to be easily moved and positioned as needed to accommodate different runway operations.

Explanation

A transportable turntable is required to provide opposite direction runway operations of the AN/MPN-14K radar shelter. This suggests that the radar shelter needs to be able to rotate or reposition itself in order to provide coverage for both directions of the runway. The transportable turntable would allow the radar shelter to be easily moved and positioned as needed to accommodate different runway operations.

70. How many parasitic director elements are mounted on the drum of the tactical air navigation system, AN/TRN–26, antenna?

7

8

9

10

The correct answer is 9. This means that there are 9 parasitic director elements mounted on the drum of the tactical air navigation system, AN/TRN–26, antenna.

Explanation

The correct answer is 9. This means that there are 9 parasitic director elements mounted on the drum of the tactical air navigation system, AN/TRN–26, antenna.

71. The visibility measurement set, AN/GMQ–32, projector and receiver, are a maximum of how many feet apart?

200

300

400

500

The visibility measurement set, AN/GMQ-32, consists of a projector and receiver. The question is asking for the maximum distance in feet that these two components can be apart from each other. The correct answer is 500 feet.

Explanation

The visibility measurement set, AN/GMQ-32, consists of a projector and receiver. The question is asking for the maximum distance in feet that these two components can be apart from each other. The correct answer is 500 feet.

72. What is the primary radar coverage of the AN/MPN–14K radar shelter?

30 nm.

60 nm.

90 nm.

120 nm.

The primary radar coverage of the AN/MPN-14K radar shelter is 60 nm. This means that the radar system is capable of detecting and tracking objects within a radius of 60 nautical miles from its location.

Explanation

The primary radar coverage of the AN/MPN-14K radar shelter is 60 nm. This means that the radar system is capable of detecting and tracking objects within a radius of 60 nautical miles from its location.

73. What information is supplied to the aircraft by the basic and auxiliary data transmission in the mobile microwave landing system, AN/TRN–45?

Distance to runway threshold.

Vertical and horizontal guidance.

Category of approach information.

Course and glidepath width information.

The basic and auxiliary data transmission in the mobile microwave landing system, AN/TRN-45, provides information on the course and glidepath width. This means that the system relays data regarding the width of the intended course and glidepath for the aircraft to follow during landing. This information is crucial for the pilot to maintain proper alignment and descent during the landing approach.

Explanation

The basic and auxiliary data transmission in the mobile microwave landing system, AN/TRN-45, provides information on the course and glidepath width. This means that the system relays data regarding the width of the intended course and glidepath for the aircraft to follow during landing. This information is crucial for the pilot to maintain proper alignment and descent during the landing approach.

74. What encompasses the majority of the missions the AN/TRC–176 radio is used for?

Air-to-ground.

Air-to-air.

Ground-to-ground.

Ground-to-air.

The AN/TRC-176 radio is primarily used for air-to-ground missions. This means that it is designed to facilitate communication between aircraft and ground stations. It allows pilots to communicate with air traffic controllers, ground support teams, and other aircraft during missions.

Explanation

The AN/TRC-176 radio is primarily used for air-to-ground missions. This means that it is designed to facilitate communication between aircraft and ground stations. It allows pilots to communicate with air traffic controllers, ground support teams, and other aircraft during missions.

75. The visibility measurement set, AN/GMQ–32, has how many main assemblies?

One.

Two.

Three.

Four.

The visibility measurement set, AN/GMQ-32, has three main assemblies.

Explanation

The visibility measurement set, AN/GMQ-32, has three main assemblies.

76. How many test interrogations per second do the radio frequency monitors route into the tactical air navigation system, AN/TRN–26?

7200.

900.

100.

25.

The correct answer is 25. This suggests that the radio frequency monitors route 25 test interrogations per second into the tactical air navigation system, AN/TRN-26.

Explanation

The correct answer is 25. This suggests that the radio frequency monitors route 25 test interrogations per second into the tactical air navigation system, AN/TRN-26.

77. How many functional groups is the tactical control tower, AN/MSN–7, composed of?

Four.

Five.

Six.

Seven.

The correct answer is six because the question asks about the number of functional groups in the tactical control tower, AN/MSN-7. A functional group refers to a specific unit or division within an organization that performs a particular function. Therefore, the tower is composed of six different functional groups, each responsible for a specific task or operation.

Explanation

The correct answer is six because the question asks about the number of functional groups in the tactical control tower, AN/MSN-7. A functional group refers to a specific unit or division within an organization that performs a particular function. Therefore, the tower is composed of six different functional groups, each responsible for a specific task or operation.

78. How many radios are there in the normal configuration of the runway control structure?

One.

Two.

Three.

Four.

The question asks about the number of radios in the normal configuration of the runway control structure. The correct answer is three. This suggests that in the normal setup, there are three radios present for communication purposes.

Explanation

The question asks about the number of radios in the normal configuration of the runway control structure. The correct answer is three. This suggests that in the normal setup, there are three radios present for communication purposes.

79. Under normal operating conditions at remote locations, what powers the tactical air navigation system, AN/TRN–26?

Direct current generator set.

120 volt alternation current generator.

Nickel-cadmium rechargeable battery.

Silver-zinc rechargeable battery.

The tactical air navigation system, AN/TRN-26, is powered by a direct current generator set. This type of generator produces a continuous flow of electrical current in one direction, which is essential for powering the system in remote locations. Alternating current generators, on the other hand, produce a current that constantly changes direction and would not be suitable for powering the system. Nickel-cadmium and silver-zinc rechargeable batteries are not mentioned as power sources for the AN/TRN-26, making the direct current generator set the correct answer.

Explanation

The tactical air navigation system, AN/TRN-26, is powered by a direct current generator set. This type of generator produces a continuous flow of electrical current in one direction, which is essential for powering the system in remote locations. Alternating current generators, on the other hand, produce a current that constantly changes direction and would not be suitable for powering the system. Nickel-cadmium and silver-zinc rechargeable batteries are not mentioned as power sources for the AN/TRN-26, making the direct current generator set the correct answer.