2A354C CDC Volume 3.

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  • 1/100 Questions

    When the F-16 ARC-210 very high frequency/ultra-high frequency (UHF/VHF) radio is receiving and transmitting on the UHF emergency frequency of 243 megahertz (MHz), what mode of operation is being used?

    • Guard.
    • Cipher.
    • Anti-jam.
    • Maritime.
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About This Quiz

This quiz for 2A354C CDC Volume 3 focuses on the AN\/ARC-164 Have Quick II UHF radio, testing knowledge on power output, channel availability, warm-up time, frequency programming, and time synchronization. It assesses critical technical skills relevant to military communication technology.

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  • 2. 

    What is the unique feature to the dual-seat KY-58 interface?

    • Aft cockpit controls volumes.

    • Forward cockpit controls volumes.

    • Both cockpits are set to a preset volume.

    • Both cockpits have independent volume control.

    Correct Answer
    A. Both cockpits have independent volume control.
    Explanation
    The unique feature of the dual-seat KY-58 interface is that both cockpits have independent volume control. This means that each cockpit can adjust the volume to their preference without affecting the other cockpit. This allows for personalized audio settings and ensures that each pilot can hear clearly without any interference from the other cockpit.

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  • 3. 

    What is the transmitter power output for the AN/ARC-164 Have Quick II ultra-high frequency (UHF) radio?

    • 5 watts

    • 10 watts

    • 15 watts

    • 20 watts

    Correct Answer
    A. 10 watts
    Explanation
    The transmitter power output for the AN/ARC-164 Have Quick II ultra-high frequency (UHF) radio is 10 watts.

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  • 4. 

    How many channels are available for the AN/ARC-164 Have Quick II ultra-high frequency (UHF) radio?

    • 5,000

    • 6,000

    • 7,000

    • 8,000

    Correct Answer
    A. 7,000
    Explanation
    The AN/ARC-164 Have Quick II ultra-high frequency (UHF) radio has a total of 7,000 channels available.

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  • 5. 

    Name the locations of tactical air navigation (TACAN) stations.

    • Ground, space, and airborne.

    • Ground, shipboard, and space.

    • Space, shipboard, and airborne.

    • Ground, shipboard, and airborne.

    Correct Answer
    A. Ground, shipboard, and airborne.
    Explanation
    TACAN stations are used for tactical air navigation and can be located on the ground, on ships, or in the air. These stations provide navigational assistance to aircraft, helping them determine their position and navigate accurately. Having TACAN stations in these different locations allows for flexibility and coverage in various operational scenarios, whether it be on land, at sea, or in the air.

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  • 6. 

    When the F-16 countermeasures dispensing set (CMDS) reaches Bingo (preset low quantities) levels of expendables, then which audio indication will the pilot hear?

    • OUT.

    • LOW.

    • COUNTER.

    • CHAFF/FLARE.

    Correct Answer
    A. LOW.
    Explanation
    When the F-16 countermeasures dispensing set (CMDS) reaches low quantities of expendables, the pilot will hear the audio indication "LOW." This audio indication serves as a warning to the pilot that the expendables, such as chaff and flare, are running low and may need to be replenished soon.

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  • 7. 

    What is used to program the frequency-hopping pattern and rate for the Have Quick II, phase II radio?

    • Net number

    • Time of day (TOD)

    • Word of day (WOD)

    • Time of week (TOW)

    Correct Answer
    A. Word of day (WOD)
    Explanation
    The correct answer is "Word of day (WOD)". In the Have Quick II, phase II radio system, the frequency-hopping pattern and rate are programmed using the Word of day (WOD). This term refers to a specific word that is used to determine the frequency-hopping sequence for a particular time period. By using the WOD, the radio can synchronize its frequency-hopping pattern with other radios in the network, ensuring secure and efficient communication.

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  • 8. 

    What two systems give a Morse Code input to the F-16 interphone system?

    • Tactical air navigation (TACAN) and instrument landing system (ILS).

    • TACAN and identification friend or foe (IFF).

    • Radar bomb scoring (RBS) and ILS.

    • RBS and IFF)

    Correct Answer
    A. Tactical air navigation (TACAN) and instrument landing system (ILS).
    Explanation
    Tactical air navigation (TACAN) and instrument landing system (ILS) are the two systems that provide a Morse Code input to the F-16 interphone system.

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  • 9. 

    Advanced interference blanker unit (AIBU) faults are reported to the

    • Up-front controls (UFC).

    • General avionics computer (GAC).

    • Stores Management System (SMS).

    • Advanced Central Interface Unit (ACIU).

    Correct Answer
    A. General avionics computer (GAC).
    Explanation
    The correct answer is general avionics computer (GAC). This is because the GAC is responsible for receiving and processing fault reports from various systems in the aircraft, including the Advanced Interference Blanker Unit (AIBU). The GAC acts as the central hub for receiving and managing these fault reports, allowing for efficient troubleshooting and maintenance of the aircraft systems.

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  • 10. 

    How many letters are contained in the Morse code identification tone for station identity?

    • Three.

    • Four.

    • Five.

    • Six.

    Correct Answer
    A. Three.
    Explanation
    The Morse code identification tone for station identity consists of three letters.

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  • 11. 

    What display would you get on the Have Quick II, phase II ultra-high frequency (UHF) radio, if there were no word of day (WOD) loaded?

    • BAD

    • ERROR

    • INVALID

    • No display

    Correct Answer
    A. BAD
    Explanation
    If there were no word of day (WOD) loaded on the Have Quick II, phase II ultra-high frequency (UHF) radio, the display would show "BAD".

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  • 12. 

    The Z-AHQ adapter allows the F-16 aircraft to use the

    • KY-28 in place of KY-58

    • KY-38 in place of KY-58

    • KY-58 in place of KY-28

    • KY-58 in place of KY-38

    Correct Answer
    A. KY-58 in place of KY-28
    Explanation
    The Z-AHQ adapter enables the F-16 aircraft to replace the KY-28 with the KY-58. This means that the Z-AHQ adapter allows the F-16 to use a different cryptographic device, specifically the KY-58, instead of the original KY-28.

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  • 13. 

    On the F-16 aircraft, the intercommunication amplifier contains

    • A power gain control switch, air refueling signal amplifier, and a voice message unit (VMU) drive.

    • A VMU, VMU drive, power gain control, and a resistive audio mixing network.

    • An aerial refueling signal amplifier, microphone relay, communication matrix, and a filter assembly.

    • A microphone headset amplifier, resistive audio mixing network, microphone relay, and a power gain control switch.

    Correct Answer
    A. A microphone headset amplifier, resistive audio mixing network, microphone relay, and a power gain control switch.
    Explanation
    The intercommunication amplifier on the F-16 aircraft includes a microphone headset amplifier, resistive audio mixing network, microphone relay, and a power gain control switch. These components are essential for effective communication within the aircraft. The microphone headset amplifier amplifies the audio signals from the pilot's microphone, while the resistive audio mixing network combines the audio signals from different sources. The microphone relay controls the routing of audio signals, and the power gain control switch allows the pilot to adjust the amplification level. Overall, these components work together to ensure clear and efficient communication in the F-16 aircraft.

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  • 14. 

    When the F-16 advanced identification friend or foe (AIFF) system enables encrypted identity operation, which mode is it using?

    • 1.

    • 2.

    • 3/A.

    • 4.

    Correct Answer
    A. 4.
  • 15. 

    What component is considered the heart of a radar warning receiver (RWR)?

    • Signal processor.

    • Azimuth indicator.

    • Receiver controller.

    • Superheterodyne receiver.

    Correct Answer
    A. Signal processor.
    Explanation
    The signal processor is considered the heart of a radar warning receiver (RWR) because it is responsible for receiving, analyzing, and processing the radar signals detected by the RWR. It plays a crucial role in identifying and classifying the radar signals, determining their direction and distance, and generating appropriate warnings or alerts to the pilot. Without a signal processor, the RWR would not be able to effectively detect and respond to radar threats, making it an essential component of the system.

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  • 16. 

    Time of day (TOD) for the ultra-high frequency (UHF) radio can be established by

    • Turning the radio on, setting the TOD switch to the official mode, and loading in the TOD.

    • A universal coordinated time hack with the global positioning satellite.

    • Setting all clocks Air Force-wide at a specified time each day.

    • Receipt from ground/tower/radar approach control (RAPCON).

    Correct Answer
    A. Receipt from ground/tower/radar approach control (RAPCON).
    Explanation
    The correct answer is receipt from ground/tower/radar approach control (RAPCON). This means that the time of day for the UHF radio can be established by receiving the time information from the ground, tower, or radar approach control. This ensures that the radio is synchronized with the official time provided by the control centers.

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  • 17. 

    You are experiencing a lot of crackling noise in the headsets of the F-16 aircraft. In view of this, you would check out the

    • Headsets.

    • Filter assembly.

    • Interphone amplifier.

    • Communication matrix.

    Correct Answer
    A. Filter assembly.
    Explanation
    The crackling noise in the headsets of the F-16 aircraft suggests that there may be a problem with the filtering system. The filter assembly is responsible for removing any unwanted noise or interference from the communication system. By checking out the filter assembly, you can identify and fix any issues that may be causing the crackling noise, ensuring clear and uninterrupted communication in the headsets.

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  • 18. 

    Specific tactical air navigation (TACAN) information is displayed on the

    • Horizontal situation indicator (HSI).

    • Attitude direction indicator (ADI).

    • Multifunction display (MFD).

    • Head-up display (HUD).

    Correct Answer
    A. Horizontal situation indicator (HSI).
    Explanation
    The correct answer is the horizontal situation indicator (HSI). The HSI is a display instrument that provides pilots with information about their aircraft's position and orientation relative to the earth's surface. It combines the functions of a heading indicator and a navigation display, and it can also display TACAN information. The attitude direction indicator (ADI) provides information about the aircraft's pitch and roll, while the multifunction display (MFD) and head-up display (HUD) are used for different purposes and do not typically display TACAN information.

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  • 19. 

    When track file characteristics match information in the emitter identification (EID) tables, the signal processor generates and positions a video symbol on the

    • Heads-up display.

    • Left mission data file.

    • Radar warning receiver scope.

    • Air combat maneuvering instrumentation.

    Correct Answer
    A. Radar warning receiver scope.
    Explanation
    The correct answer is radar warning receiver scope. When track file characteristics match information in the emitter identification (EID) tables, the signal processor generates and positions a video symbol on the radar warning receiver scope.

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  • 20. 

    Where is the secure voice control panel located on the F-16 aircraft?

    • Right console near the electronic counter measures (ECM) control panel.

    • Right console near the lighting control panel.

    • Left console near the lighting control panel.

    • Left console near the ECM control panel.

    Correct Answer
    A. Right console near the lighting control panel.
    Explanation
    The secure voice control panel on the F-16 aircraft is located on the right console near the lighting control panel.

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  • 21. 

    What is the power requirement for the KY-58 secure voice system and how is it applied?

    • 26 volts direct current (VDC); through a 5 amp circuit breaker.

    • 28 VDC; through a 5 amp circuit breaker.

    • 26 VDC; through a 10 amp circuit breaker.

    • 28 VDC; through a 10 amp circuit breaker.

    Correct Answer
    A. 28 VDC; through a 5 amp circuit breaker.
    Explanation
    The power requirement for the KY-58 secure voice system is 28 volts direct current (VDC) and it is applied through a 5 amp circuit breaker.

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  • 22. 

    What are the mode switch positions on the KY-58 secure voice control panel?

    • OFF, operational (OP) and load (LD)

    • OFF, baseband (BB) and diphase (DP)

    • Operational (OP), load (LD) and receive variable (RV)

    • Receive variable (RV), baseband (BB) and diphase (DP)

    Correct Answer
    A. Operational (OP), load (LD) and receive variable (RV)
    Explanation
    The correct answer is Operational (OP), load (LD) and receive variable (RV). This means that the KY-58 secure voice control panel has three mode switch positions: OP, LD, and RV.

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  • 23. 

    Where is the intercommunication amplifier on a D-model F-16 located?

    • Under the aft seat.

    • Left of the console.

    • Right of the console.

    • Behind the pilot's seat.

    Correct Answer
    A. Under the aft seat.
    Explanation
    The intercommunication amplifier on a D-model F-16 is located under the aft seat.

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  • 24. 

    If the F-16 satellite communication (SATCOM) setup is automatic and no channel login is required, which SATCOM mode of operation is being used?

    • 25K demand assigned multiple access (DAMA).

    • Demand assigned single access (DASA).

    • 5K DAMA.

    • Dedicated.

    Correct Answer
    A. Dedicated.
    Explanation
    If the F-16 satellite communication setup is automatic and no channel login is required, it suggests that the SATCOM mode of operation being used is "Dedicated." In a dedicated mode of operation, the communication channel is exclusively allocated to a specific user or system, eliminating the need for login or sharing the channel with other users. This ensures a dedicated and uninterrupted connection for the F-16 satellite communication setup.

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  • 25. 

    What are the operating controls for the intercom system?

    • Intercom microphone (MIC) switch and intercom volume control on the AUDIO 2 panel.

    • Intercom MIC switch and HOT MIC volume control on the AUDIO 1 panel.

    • HOT MIC switch and HOT MIC volume control on the AUDIO 1 panel.

    • HOT MIC switch and intercom volume control on the AUDIO 2 panel.

    Correct Answer
    A. HOT MIC switch and intercom volume control on the AUDIO 2 panel.
    Explanation
    The correct answer is HOT MIC switch and intercom volume control on the AUDIO 2 panel. This is because the HOT MIC switch is used to activate the microphone, allowing the pilot or crew members to transmit their voice over the intercom system. The intercom volume control on the AUDIO 2 panel is used to adjust the volume of the intercom system, ensuring clear communication between the pilot and crew members.

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  • 26. 

    The advanced interference blanker unit (AIBU) is operational anytime power is applied to

    • The stores management system (SMS).

    • The general avionics computer (GAC).

    • Both the GAC and SMS.

    • The aircraft.

    Correct Answer
    A. The aircraft.
    Explanation
    The advanced interference blanker unit (AIBU) is operational anytime power is applied to the aircraft. This means that the AIBU will be functioning as long as the aircraft is powered on, regardless of whether power is applied to the stores management system (SMS), the general avionics computer (GAC), or both. Therefore, the correct answer is the aircraft itself.

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  • 27. 

    Which technical order (TO) contains procedures for advanced interference blanker unit (AIBU) removal and installation?

    • 99JG-00-01.

    • 99JG-10-01.

    • 99JG-20-01.

    • 99JG-30-01.

    Correct Answer
    A. 99JG-20-01.
    Explanation
    The correct answer is 99JG-20-01. This technical order contains procedures for advanced interference blanker unit (AIBU) removal and installation.

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  • 28. 

    What is not a characteristic of a crystal video receiver (CVR)?

    • Sensitive.

    • Extremely fast.

    • A large component.

    • Covers a wide frequency range.

    Correct Answer
    A. A large component.
    Explanation
    A crystal video receiver (CVR) is a type of receiver used in video transmission that has certain characteristics. It is sensitive, meaning it can pick up weak signals effectively. It is also extremely fast, allowing for quick and efficient signal processing. Additionally, it covers a wide frequency range, enabling it to receive signals from various sources. However, a large component is not a characteristic of a CVR. This means that the size of the CVR is not necessarily large, as it can be designed to be compact and portable.

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  • 29. 

    On the F-16 ARC-210 very high frequency/ultra-high frequency (UHF/VHF) radio system, when transmission is initiated, to which position is the mic switched placed?

    • AFT.

    • FWD.

    • Inboard.

    • Outboard.

    Correct Answer
    A. FWD.
    Explanation
    The correct answer is FWD. In the F-16 ARC-210 radio system, when transmission is initiated, the mic switch is placed in the forward position.

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  • 30. 

    On the F-16 ARC-210 very high frequency/ultra-high frequency (UHF/VHF) radio system, which component splits outgoing VHF transmissions into transmitted frequencies and routes the signals to the correct antenna?

    • VHF AM antenna.

    • VHF FM antenna.

    • VHF frequency diplexer.

    • UHF/VHF antenna selector.

    Correct Answer
    A. VHF frequency diplexer.
    Explanation
    The VHF frequency diplexer is the component on the F-16 ARC-210 radio system that splits outgoing VHF transmissions into transmitted frequencies and routes the signals to the correct antenna. The diplexer allows for the separation of different frequencies and ensures that each signal is sent to the appropriate antenna for transmission.

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  • 31. 

    What is the warm-up time for the AN/ARC-164 Have Quick II ultra-high frequency (UHF) radio?

    • 5 seconds

    • 7 seconds

    • 10 seconds

    • 15 seconds

    Correct Answer
    A. 10 seconds
    Explanation
    The warm-up time for the AN/ARC-164 Have Quick II ultra-high frequency (UHF) radio is 10 seconds.

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  • 32. 

    Where are the received audio signals, warning tones, and radio transmissions routed before they are sent to the intercom amplifier and the operator headset?

    • AUDIO 1 panel.

    • AUDIO 2 panel.

    • Communication audio panel.

    • Communications matrix assembly.

    Correct Answer
    A. Communications matrix assembly.
    Explanation
    The received audio signals, warning tones, and radio transmissions are routed to the communications matrix assembly before being sent to the intercom amplifier and the operator headset. The communications matrix assembly acts as a central hub where all the audio signals are processed and distributed to the appropriate destinations. This ensures that the audio signals are properly managed and can be heard by the operator through the intercom amplifier and headset.

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  • 33. 

    On the horizontal situation indicator (HSI) course deviation scale for tactical air navigation (TACAN), how many degrees of course deviation does each dot represent?

    • 2.5

    • 5

    • 10

    • 12.5

    Correct Answer
    A. 5
    Explanation
    Each dot on the horizontal situation indicator (HSI) course deviation scale for tactical air navigation (TACAN) represents a deviation of 5 degrees from the desired course.

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  • 34. 

    For the F-16, what converts the tactical air navigation (TACAN) receiver-transmitter output to a format compatible with the horizontal situation indicator (HSI)?

    • HSI buffer assembly.

    • TACAN shockmount.

    • Digital-to-analog (D/A) adapter.

    • TACAN receiver-transmitter I/O section.

    Correct Answer
    A. Digital-to-analog (D/A) adapter.
    Explanation
    The correct answer is the Digital-to-analog (D/A) adapter. This device is responsible for converting the digital output from the tactical air navigation (TACAN) receiver-transmitter into an analog format that is compatible with the horizontal situation indicator (HSI). This allows the TACAN information to be displayed on the HSI for the pilot's reference and navigation.

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  • 35. 

    When the F-16 multifunction information distribution system (MIDS) achieves a fine synchronization, what is displayed?

    • FINE.

    • SYNC.

    • READY.

    • LINK-16.

    Correct Answer
    A. FINE.
    Explanation
    When the F-16 multifunction information distribution system (MIDS) achieves a fine synchronization, the display will show "FINE." This indicates that the synchronization process has been successfully completed and the system is now ready to operate efficiently.

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  • 36. 

    During ALR-56M system initialization, what does the azimuth indicator display first for approximately three minutes?

    • F.

    • I.

    • US.

    • WO.

    Correct Answer
    A. I.
    Explanation
    During ALR-56M system initialization, the azimuth indicator displays the letter "I" first for approximately three minutes.

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  • 37. 

    If the F-16 countermeasures dispensing set (CMDS) initiates a dispense program generated from threat information received from the ALR-56M, then what mode of operation is selected?

    • Semi.

    • Jettison.

    • Manual.

    • Standby.

    Correct Answer
    A. Semi.
    Explanation
    When the F-16 countermeasures dispensing set (CMDS) initiates a dispense program generated from threat information received from the ALR-56M, the mode of operation selected is "Semi."

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  • 38. 

    What does the status switch on an ultra-high frequency (UHF) radio indicate?

    • Status of the UHF radio.

    • Status of the UHF frequencies.

    • Alternate display and holds for 5 seconds.

    • Alternate display and holds for 10 seconds.

    Correct Answer
    A. Alternate display and holds for 5 seconds.
    Explanation
    The status switch on an ultra-high frequency (UHF) radio indicates an alternate display and holds for 5 seconds. This means that when the status switch is activated, the radio will switch between different displays or information and hold each display for 5 seconds before switching to the next one. This feature allows the user to quickly view and access different information or settings on the UHF radio.

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  • 39. 

    What are the two positions of the filter switch on the secure voice processor?

    • IN and OUT

    • ON and OFF

    • Load and plain

    • Load and verify

    Correct Answer
    A. IN and OUT
    Explanation
    The secure voice processor has a filter switch with two positions: IN and OUT. This switch allows the user to choose whether the filter is active or not. When the switch is set to IN, the filter is engaged and the processor will process the audio signal with the filter. When the switch is set to OUT, the filter is bypassed and the audio signal will not be processed with the filter.

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  • 40. 

    The advanced interference blanker unit (AIBU) interfaces with TACAN,

    • IFF, FCR, RTWS, and ECM.

    • INS, FCR, RTWS, IFF, and ECM.

    • SMS, FCR, RTWS, IFF, and ECM.

    • SMS, FCR, RTWS, IFF, INS, and ECM.

    Correct Answer
    A. IFF, FCR, RTWS, and ECM.
    Explanation
    The advanced interference blanker unit (AIBU) interfaces with the IFF (Identification Friend or Foe) system, the FCR (Fire Control Radar), the RTWS (Radar Target Warning System), and the ECM (Electronic Countermeasures) system. These are all important components of a military aircraft's avionics system, and the AIBU is designed to work with them to mitigate interference and ensure proper functioning of these systems.

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  • 41. 

    What information does tactical air navigation (TACAN) provide to an aircrew?

    • Altitude, relative bearing, and slant range.

    • Slant range, altitude, and station identity tone.

    • Altitude, relative bearing, and station identity tone.

    • Slant range, relative bearing, and station identity tone.

    Correct Answer
    A. Slant range, relative bearing, and station identity tone.
    Explanation
    Tactical air navigation (TACAN) provides an aircrew with information about slant range, which is the distance between the aircraft and the TACAN station, relative bearing, which is the direction of the TACAN station relative to the aircraft, and the station identity tone, which is a unique audio signal that helps the aircrew identify the specific TACAN station they are receiving signals from.

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  • 42. 

    What emergency reprogramming action is taken if a real world threat appears that is not part of the current emitter identification?

    • Pacer Ware.

    • Serene Byte.

    • Superheterodyne receiver reprogramming.

    • General avionics computer reprogramming.

    Correct Answer
    A. Pacer Ware.
    Explanation
    Pacer Ware is the correct answer because it refers to emergency reprogramming action that is taken when a real world threat appears that is not part of the current emitter identification. It is a specific term used in the context of handling such situations. The other options, Serene Byte, Superheterodyne receiver reprogramming, and General avionics computer reprogramming, do not directly relate to the given scenario.

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  • 43. 

    Which radar threat warning systems (RTWS) mode is used if displayed threat symbols overlap or are superimposed?

    • SEP.

    • UNK.

    • OPEN.

    • PRIORITY.

    Correct Answer
    A. SEP.
    Explanation
    When the displayed threat symbols overlap or are superimposed, the radar threat warning system (RTWS) mode used is SEP. This mode stands for "Separate" and it indicates that the threats are separate and distinct from each other. This helps the operator to differentiate between multiple threats and take appropriate actions accordingly.

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  • 44. 

    Upon ALR-69 system time-in, what is displayed momentarily in the azimuth (AZ) indicators center?

    • F.

    • OK.

    • GOOD.

    • READY.

    Correct Answer
    A. F.
  • 45. 

    On the azimuth (AZ) indicator, a cycle time greater than 0.5 seconds may indicate

    • System time-in.

    • System self-test.

    • Maintenance test.

    • System malfunction.

    Correct Answer
    A. System malfunction.
    Explanation
    A cycle time greater than 0.5 seconds on the azimuth (AZ) indicator may indicate a system malfunction. This is because a longer cycle time suggests that the system is taking longer than usual to complete a cycle or process, which could be a sign of an issue or malfunction within the system.

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  • 46. 

    The ALR-56M system uses what type of data to update threat symbol position during aircraft maneuvers?

    • Navigation data.

    • RF time tag data.

    • Time-of-arrival data.

    • Combined radar altimeter data.

    Correct Answer
    A. Navigation data.
    Explanation
    The ALR-56M system uses navigation data to update threat symbol position during aircraft maneuvers. Navigation data provides information about the aircraft's current position, velocity, and orientation, which is crucial for accurately tracking and updating the position of potential threats. RF time tag data, time-of-arrival data, and combined radar altimeter data are not directly related to updating threat symbol position during maneuvers.

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  • 47. 

    The cockpit control unit (CCU) provides the electrical interface between the chaff/flare switch,

    • The countermeasures management switch (CMS), and the safety switch assembly.

    • The CMS, and the cockpit data link (CDL).

    • The data transfer unit (DTU), and CDL.

    • DTU, and the safety switch assembly.

    Correct Answer
    A. The countermeasures management switch (CMS), and the safety switch assembly.
    Explanation
    The cockpit control unit (CCU) serves as the electrical interface between the countermeasures management switch (CMS) and the safety switch assembly. This means that the CCU facilitates the communication and interaction between these two components, allowing for the effective management and operation of countermeasures and ensuring the safety of the aircraft.

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  • 48. 

    The upper and lower side of the instrument landing system (ILS) glide-slope course is modulated at

    • 150 and 90 Hz, respectively.

    • 90 and 150 Hz, respectively.

    • 120 and 70 Hz, respectively.

    • 70 and 120 Hz, respectively.

    Correct Answer
    A. 90 and 150 Hz, respectively.
    Explanation
    The correct answer is 90 and 150 Hz, respectively. In the instrument landing system (ILS), the glide-slope course is modulated with two frequencies. The upper side is modulated at 150 Hz, while the lower side is modulated at 90 Hz. This modulation helps pilots maintain the correct vertical descent path during an instrument approach, ensuring a safe landing.

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  • 49. 

    What is the time delay before a tactical air navigation (TACAN) station replies to an airborne system interrogation?

    • 10 microseconds.

    • 50 microseconds.

    • 10 milliseconds.

    • 50 milliseconds.

    Correct Answer
    A. 50 microseconds.
    Explanation
    The correct answer is 50 microseconds. Tactical air navigation (TACAN) stations reply to an airborne system interrogation with a time delay of 50 microseconds. This short delay allows for quick and efficient communication between the airborne system and the TACAN station, ensuring accurate navigation and tracking information.

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Quiz Review Timeline (Updated): Mar 19, 2023 +

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  • Current Version
  • Mar 19, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 20, 2014
    Quiz Created by
    Blatham919
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