2a553a CDC Volume 5

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CDC Quizzes & Trivia

Test on UREs from Volume 5 of Comm/Nav CDCs


Questions and Answers
  • 1. 

    The agin control and iris switches on the manual light control are used to control the steerable television's video

    • A.

      Sensitivity and light emission

    • B.

      Sensitivity and light level

    • C.

      Gain and light emission

    • D.

      Gain and light level

    Correct Answer
    D. Gain and light level
    Explanation
    The agin control and iris switches on the manual light control are used to adjust the gain and light level of the steerable television's video. The gain control allows for increasing or decreasing the amplification of the video signal, while the iris control adjusts the amount of light entering the camera, thereby affecting the overall light level.

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  • 2. 

    With the built-in test switch in the SHTR position, the proper steerable television system response is

    • A.

      Closing of the shutter and preamplifier noise on the display

    • B.

      Display of the fiducial marks and preamplifier noise

    • C.

      Closing of the camera shutter

    • D.

      Display of fiducial marks

    Correct Answer
    C. Closing of the camera shutter
    Explanation
    When the built-in test switch in the SHTR (shutter) position, the proper response of the steerable television system is the closing of the camera shutter. This means that when the switch is activated, the camera shutter will close, preventing any further image capture. This action is necessary to ensure that no additional images are recorded during the test.

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  • 3. 

    Which built-in test switch position results in a checkout of the steerable television system on a high-light level basis, representing a minimum gain condition

    • A.

      ELEC-B

    • B.

      ELEC-A

    • C.

      ILLUM

    • D.

      LL

    Correct Answer
    B. ELEC-A
    Explanation
    The correct answer is ELEC-A. This switch position allows for a checkout of the steerable television system on a high-light level basis, representing a minimum gain condition. This means that by selecting this switch position, the system will be tested under conditions of maximum brightness or illumination, ensuring that it is functioning properly even in the most challenging lighting conditions.

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  • 4. 

    The built-in test switch position that test the steerable television's logic and video processor circuits is the

    • A.

      LL, HL and ILLUM

    • B.

      ELEC-B

    • C.

      LL and HL

    • D.

      ELEC-A

    Correct Answer
    D. ELEC-A
    Explanation
    The correct answer is ELEC-A. The question is asking about the built-in test switch position that tests the steerable television's logic and video processor circuits. The only option that includes both LL and HL is ELEC-A, so it is the correct answer.

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  • 5. 

    Which built-in test switch position results in a checkout of the steerable television system on a low-light level basis, representing a maximum gain condition?

    • A.

      ELEC-B

    • B.

      ELEC-A

    • C.

      ILLUM

    • D.

      LL

    Correct Answer
    A. ELEC-B
    Explanation
    The correct answer is ELEC-B. This switch position allows for a checkout of the steerable television system on a low-light level basis, representing a maximum gain condition.

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  • 6. 

    To clear a MALF indication during steerable television operation, you

    • A.

      Do nothing because the fault is noted and cleared in two minutes

    • B.

      Reset the mode switch to OFF and back to STBY

    • C.

      Reset the mode switch to STBY and back to OPR

    • D.

      Cycle the built-in test switch from NORM to ELEC-B and back

    Correct Answer
    C. Reset the mode switch to STBY and back to OPR
    Explanation
    To clear a MALF indication during steerable television operation, you need to reset the mode switch to STBY and back to OPR. This action will reset the system and clear the fault indication.

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  • 7. 

    What steerable television camera subassembly component protects the sensor from damage due to overexposure?

    • A.

      Control module

    • B.

      Image-gating unit

    • C.

      Flash protector

    • D.

      Shutter

    Correct Answer
    D. Shutter
    Explanation
    The shutter is the component of a steerable television camera subassembly that protects the sensor from damage due to overexposure. The shutter controls the amount of light that enters the camera by opening and closing, preventing excessive light from reaching the sensor and causing damage. This helps to ensure that the sensor receives the appropriate amount of light for capturing high-quality images without being overwhelmed by excessive light.

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  • 8. 

    Which best describes the focusing used by the steerable televisions secondary electron conduction tube?

    • A.

      Magnetic

    • B.

      Electrostatic and mechanical

    • C.

      Magnetic and electrostatic

    • D.

      Electrostatic

    Correct Answer
    C. Magnetic and electrostatic
    Explanation
    The correct answer is magnetic and electrostatic. Steerable televisions use a secondary electron conduction tube, which requires both magnetic and electrostatic focusing. Magnetic focusing is used to control the path of the electron beam, while electrostatic focusing is used to ensure that the electrons are focused onto the screen accurately. Both magnetic and electrostatic focusing are necessary for the proper functioning of the steerable television's secondary electron conduction tube.

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  • 9. 

    The steerable television automatic light control circuit compensates for minor light variations in the

    • A.

      Video automatic gain

    • B.

      Iris

    • C.

      Sensor photocathode voltage

    • D.

      Image intensifier exposure

    Correct Answer
    A. Video automatic gain
    Explanation
    The steerable television automatic light control circuit compensates for minor light variations in the video automatic gain. This means that the circuit adjusts the gain of the video signal to maintain a consistent brightness level, even when there are slight changes in the ambient light conditions. By doing so, it ensures that the displayed image remains clear and visible, regardless of the lighting conditions in the environment.

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  • 10. 

    During steerable television automatic light control shutdown, losing the high voltage reference signal

    • A.

      Establishes image intensifier and secondary electron conduction tube gain

    • B.

      Controls system gain

    • C.

      Turns on the camera assembly

    • D.

      Protects the camera tube assembly

    Correct Answer
    D. Protects the camera tube assembly
    Explanation
    During steerable television automatic light control shutdown, losing the high voltage reference signal can be detrimental to the camera tube assembly. The high voltage reference signal is crucial for the proper functioning of the camera tube assembly. If this signal is lost, it can potentially lead to damage or malfunction of the camera tube assembly. Therefore, the shutdown process is designed to protect the camera tube assembly from any harm that may occur due to the loss of the high voltage reference signal.

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  • 11. 

    The steerable television interfaces with the

    • A.

      Servo control unit and VDU

    • B.

      Symbol signal generator and radar scan converter

    • C.

      VDU and radar scan converter

    • D.

      VDU and symbol signal generator

    Correct Answer
    A. Servo control unit and VDU
    Explanation
    The correct answer is the servo control unit and VDU. This is because the steerable television needs to interface with both the servo control unit and the VDU in order to function properly. The servo control unit is responsible for controlling the movement of the television, while the VDU is the display unit that shows the video signals. Without both of these components, the steerable television would not be able to operate effectively.

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  • 12. 

    When an automatic light control (ALC) shutdown command in the steerable television occurs,

    • A.

      Video saturation disappears and the system reverts to ALC FULL mode

    • B.

      The camera shutter closes

    • C.

      The system enters ALC FULL mode

    • D.

      The system reverts to STBY mode

    Correct Answer
    D. The system reverts to STBY mode
    Explanation
    When an automatic light control (ALC) shutdown command occurs in the steerable television, the system reverts to STBY mode. This means that the system goes into a standby mode where it is not actively functioning or producing any output. The shutdown command triggers this mode as a way to conserve power or prevent any further operation until the issue causing the shutdown command is resolved. In this mode, the system may not be able to perform its intended functions until it is manually restarted or the issue is resolved.

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  • 13. 

    Steerable television performance is verified by

    • A.

      Front-to-rear tests

    • B.

      BIT ELEC-B

    • C.

      BIT ELEC-A

    • D.

      Preflight tests

    Correct Answer
    A. Front-to-rear tests
    Explanation
    Steerable television performance is verified through front-to-rear tests. These tests involve assessing the television's performance and functionality across different angles and positions, ensuring that it can be easily adjusted and provides consistent picture quality from various viewing perspectives. By conducting front-to-rear tests, any issues or limitations in the television's steerable performance can be identified and addressed, guaranteeing a satisfactory viewing experience for users.

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  • 14. 

    Which steerable television BIT switch test position generates a BIT window, and, if the window is not displayed, which LRU do you remove?

    • A.

      ELEC-A; camera assembly

    • B.

      ELEC-A; camera electronics

    • C.

      ELEC-B; camera electronics

    • D.

      ELEC-B; camera assembly

    Correct Answer
    B. ELEC-A; camera electronics
    Explanation
    The correct answer is ELEC-A; camera electronics. This test position generates a BIT window for the television, which allows for testing and troubleshooting of the camera electronics. If the window is not displayed, the faulty component to be removed would be the camera electronics in the ELEC-A position.

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  • 15. 

    What is the primary source of infrared energy?

    • A.

      Heated objects

    • B.

      Earth surface

    • C.

      Sun

    • D.

      Moon

    Correct Answer
    C. Sun
    Explanation
    The sun is the primary source of infrared energy. It emits a wide range of electromagnetic radiation, including infrared rays. These rays are produced by the sun's intense heat and are responsible for providing warmth to the Earth's surface. Infrared energy is also essential for various natural processes, such as photosynthesis in plants and the regulation of temperature in the atmosphere. Therefore, the sun is considered the main source of infrared energy.

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  • 16. 

    Light and infrared energy cannot be

    • A.

      Reflected

    • B.

      Refracted

    • C.

      Absorbed

    • D.

      Diluted

    Correct Answer
    D. Diluted
    Explanation
    Light and infrared energy cannot be diluted because dilution refers to the process of reducing the concentration or strength of a substance by adding more of a solvent. However, light and infrared energy are not substances that can be diluted in this manner. Instead, they can be reflected, refracted, or absorbed by different materials or mediums.

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  • 17. 

    The main difference between visible light and IR energy is

    • A.

      That visible light can travel through a vacuum and IR energy cannot

    • B.

      That visible light can be refracted while IR energy cannot

    • C.

      The manner in which IR energy is processed

    • D.

      The nature of the controlling medium

    Correct Answer
    D. The nature of the controlling medium
    Explanation
    The correct answer is "the nature of the controlling medium." This means that the main difference between visible light and IR energy lies in the characteristics of the medium through which they travel. Visible light can travel through a vacuum, while IR energy cannot. The controlling medium refers to the substance or material that the light or energy passes through, and in this case, it determines whether visible light or IR energy can propagate.

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  • 18. 

    Which is not a property of infrared energy?

    • A.

      Has wavelength

    • B.

      Needs no physical property to travel

    • C.

      Has frequency

    • D.

      Is caused by molecular friction

    Correct Answer
    D. Is caused by molecular friction
    Explanation
    Infrared energy is a type of electromagnetic radiation that has a wavelength and frequency. It does not require any physical medium to travel, meaning it can travel through a vacuum. However, it is not caused by molecular friction. Infrared energy is primarily generated by the thermal vibrations and rotations of molecules. Therefore, the correct answer is "Is caused by molecular friction."

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  • 19. 

    Which FLIR set subsystem component provides an electrical interface between the aircraft display and sensor assembly?

    • A.

      FLIR control panel

    • B.

      Signal data converter

    • C.

      Video post processor

    • D.

      Gimbal assembly

    Correct Answer
    B. Signal data converter
    Explanation
    The signal data converter is the subsystem component that provides an electrical interface between the aircraft display and sensor assembly. It is responsible for converting the signal data from the sensor assembly into a format that can be displayed on the aircraft's display system. This allows for seamless communication and integration between the two components, ensuring that the sensor data can be effectively utilized and displayed by the aircraft.

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  • 20. 

    The FLIR set's dual field of optics is located in the

    • A.

      Sensor unit

    • B.

      Focal plan array

    • C.

      Signal data converter

    • D.

      Video post processor

    Correct Answer
    A. Sensor unit
    Explanation
    The FLIR set's dual field of optics is located in the sensor unit. This means that the sensor unit of the FLIR set contains two separate optical systems that provide different fields of view. These optics are responsible for capturing the thermal images and transmitting them to the other components of the FLIR set for further processing and analysis.

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  • 21. 

    Which FLIR set sensor component receives the video output from the sensor unit?

    • A.

      Signal data converter

    • B.

      Video post processor

    • C.

      Focal plan array

    • D.

      Gimbal assembly

    Correct Answer
    A. Signal data converter
    Explanation
    The signal data converter is the component that receives the video output from the sensor unit in a FLIR set. It is responsible for converting the analog video signal into a digital format that can be processed and displayed. This conversion allows for further analysis and manipulation of the video data.

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  • 22. 

    The electronics that provide control of the FLIR set's cryocooler compressor are contained in the

    • A.

      Cryocooler

    • B.

      Signal data converter

    • C.

      Video post processor

    • D.

      Sensor unit

    Correct Answer
    C. Video post processor
    Explanation
    The correct answer is video post processor. The electronics that control the cryocooler compressor of the FLIR set are contained in the video post processor. This device is responsible for processing the video signals and enhancing the quality of the images captured by the FLIR system. It is not the cryocooler or the signal data converter, as they have different functions within the FLIR set. The sensor unit is also not responsible for controlling the cryocooler compressor.

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  • 23. 

    The FLIR set's television video is sent to the data presentation group via the

    • A.

      Video post processor

    • B.

      Video distribution unit

    • C.

      Signal data converter

    • D.

      Sensor unit

    Correct Answer
    B. Video distribution unit
    Explanation
    The correct answer is video distribution unit. The FLIR set's television video is sent to the data presentation group through the video distribution unit. This unit is responsible for distributing the video signal to multiple displays or devices, allowing the data presentation group to view the FLIR set's television video simultaneously. The video distribution unit ensures that the video signal is transmitted efficiently and effectively to the intended recipients.

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  • 24. 

    The power meter is used to measure

    • A.

      Absolute and relative power

    • B.

      Absolute and reflective power

    • C.

      AC power

    • D.

      DC power

    Correct Answer
    A. Absolute and relative power
    Explanation
    The power meter is a device that is used to measure both absolute and relative power. Absolute power refers to the actual power value being measured, while relative power refers to the power value in comparison to a reference or baseline. The power meter can accurately measure both types of power, making it a versatile tool for various applications. It can be used to measure power in both AC and DC systems, making it suitable for a wide range of power measurement needs.

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  • 25. 

    The power meter displays absolute power in watts or

    • A.

      Relative decibels (dBR)

    • B.

      Measured decibels (dBM)

    • C.

      Referenced decibels (dBm)

    • D.

      Decibels (dB)

    Correct Answer
    C. Referenced decibels (dBm)
    Explanation
    The power meter displays the power in referenced decibels (dBm). Referenced decibels (dBm) is a unit of power measurement that represents the power level relative to 1 milliwatt (mW). It provides a standardized and absolute measurement of power, making it easier to compare power levels across different devices or systems. The power meter may also display power in watts or relative decibels (dBR), but referenced decibels (dBm) is the correct answer as it specifically refers to the power measurement in dBm.

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  • 26. 

    What power meter control compensates for a slight sensitivity associated with a particular type of power sensor?

    • A.

      CAL FACTOR %

    • B.

      SENSOR ZERO

    • C.

      RANGE HOLD

    • D.

      CAL ADJ

    Correct Answer
    D. CAL ADJ
    Explanation
    CAL ADJ stands for calibration adjustment, which is a power meter control that compensates for a slight sensitivity associated with a particular type of power sensor. This control allows for fine-tuning and adjusting the calibration of the power meter to ensure accurate measurements. By making the necessary adjustments, the power meter can account for any variations or discrepancies in the sensitivity of the power sensor being used, resulting in more precise and reliable measurements.

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  • 27. 

    The power sensor is used toe establish the active frequency range and power range within the design parameters of the

    • A.

      Time domain reflectometer

    • B.

      Spectrum analyzer

    • C.

      Power meter

    • D.

      Oscilloscope

    Correct Answer
    C. Power meter
    Explanation
    A power meter is used to measure the power of an electrical signal. In this context, the power sensor is used to establish the active frequency range and power range within the design parameters of the power meter. This means that the power sensor helps determine the specific frequencies and power levels that the power meter can accurately measure.

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  • 28. 

    When calibrating the power sensor, you adjust the CAL ADJ control so the digital readout indicates

    • A.

      1.000 W

    • B.

      1.000 mW

    • C.

      -1.000 W

    • D.

      -1.000 mW

    Correct Answer
    B. 1.000 mW
    Explanation
    When calibrating the power sensor, the CAL ADJ control is adjusted so that the digital readout indicates a power measurement of 1.000 mW. This means that the sensor is being calibrated to accurately measure power levels of 1 milliwatt. Adjusting the control to any other value, such as 1.000 W, -1.000 W, or -1.000 mW, would result in an incorrect calibration and inaccurate power measurements.

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  • 29. 

    Before turning on the power meter, you must ensure it is

    • A.

      Set to match the line voltage you're using

    • B.

      Properly married with the spectrum analyzer

    • C.

      Adjusted to the frequency range to be measured

    • D.

      Properly married with the power sensor

    Correct Answer
    A. Set to match the line voltage you're using
    Explanation
    The correct answer is "set to match the line voltage you're using." This means that before turning on the power meter, you need to make sure that it is adjusted to the same voltage as the power source you are using. This is important to ensure accurate measurements and prevent any damage to the power meter or other equipment.

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  • 30. 

    When zeroing the power sensor, press and hold the SENSOR ZERO switch, and wait for the digital readout to

    • A.

      Neutralize

    • B.

      Climb to 1.000 mW

    • C.

      Stabilize

    • D.

      Climb to -1.000 mW

    Correct Answer
    C. Stabilize
    Explanation
    When zeroing the power sensor, the correct action is to press and hold the SENSOR ZERO switch and wait for the digital readout to stabilize. This means that the reading on the power sensor should settle and become steady. This ensures that the sensor is properly calibrated and ready for accurate measurements.

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  • 31. 

    If you are using a power meter to measure relative power and want to use the first power level as a reference, what switch do you press once that blanks the digital display and stores the reading?

    • A.

      RANGE HOLD

    • B.

      SENSOR ZERO

    • C.

      MODE

    • D.

      DB REF

    Correct Answer
    D. DB REF
    Explanation
    To use the first power level as a reference and store the reading, you would press the "dB REF" switch. This switch blanks the digital display and saves the current reading as the reference point for measuring relative power.

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  • 32. 

    Which piece of wire and cable test equipment uses electromagnetic wave pulses to test cables?

    • A.

      Time domain reflectometer

    • B.

      Frequency counter

    • C.

      Multimeter

    • D.

      Signal generator

    Correct Answer
    A. Time domain reflectometer
    Explanation
    A time domain reflectometer (TDR) is a piece of wire and cable test equipment that uses electromagnetic wave pulses to test cables. It sends a pulse down the cable and measures the reflections that occur when the pulse encounters impedance changes or faults in the cable. By analyzing the time and amplitude of these reflections, a TDR can determine the length of the cable, locate faults or discontinuities, and measure the impedance of the cable. This makes it a valuable tool for troubleshooting and maintaining cables in various industries such as telecommunications, networking, and electrical systems.

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  • 33. 

    Horizontal deflection on the cathode-ray tube on the TDR equates to

    • A.

      Voltage

    • B.

      Reflected amplitude

    • C.

      Current

    • D.

      Distance

    Correct Answer
    D. Distance
    Explanation
    The horizontal deflection on the cathode-ray tube on the TDR equates to distance. This means that the horizontal movement of the electron beam on the cathode-ray tube is directly proportional to the distance being measured. As the distance increases, the horizontal deflection on the cathode-ray tube also increases, allowing for accurate distance measurements.

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  • 34. 

    Putting the cover on a TDR

    • A.

      Changes the color of light displayed

    • B.

      Changes the polarity of its sine wave

    • C.

      Automatically turns it off

    • D.

      Automatically turns it on

    Correct Answer
    C. Automatically turns it off
    Explanation
    When the cover is put on a TDR (Time Domain Reflectometer), it automatically turns off. This could be due to a built-in mechanism or sensor that detects the presence of the cover and triggers the power-off function. This feature is likely designed to conserve energy and prevent any accidental measurements or operations while the device is covered.

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  • 35. 

    Damage to the sampling gate or tunnel diode of a TDR indicates voltages exceeding

    • A.

      5 volts were applied

    • B.

      -5 volts were applied

    • C.

      2 volts were applied

    • D.

      -2 volts were applied

    Correct Answer
    A. 5 volts were applied
    Explanation
    The correct answer is 5 volts were applied. Damage to the sampling gate or tunnel diode of a Time Domain Reflectometer (TDR) indicates that voltages exceeding 5 volts were applied. This suggests that the applied voltage was higher than the maximum threshold that the TDR can handle, causing damage to its components.

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  • 36. 

    To test the cable on the TDR, use the standard

    • A.

      36 inch, 25 ohm cable

    • B.

      36 inch, 50 ohm cable

    • C.

      12 inch, 50 ohm cable

    • D.

      12 inch, 25 ohm cable

    Correct Answer
    B. 36 inch, 50 ohm cable
    Explanation
    The correct answer is 36 inch, 50 ohm cable. The reason for this is that the TDR (Time Domain Reflectometer) is used to test the impedance and integrity of a cable. The cable used for testing should have the same impedance as the cable being tested. In this case, the standard cable used for testing is 36 inches long and has an impedance of 50 ohms, which matches the cable being tested.

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  • 37. 

    A TDR display that starts in the upper left corner of the screen, drops down at mid screen, and departs in the lower right screen indicates

    • A.

      A short

    • B.

      A crimped cable

    • C.

      An open

    • D.

      A frayed cable

    Correct Answer
    A. A short
    Explanation
    A TDR display that starts in the upper left corner of the screen, drops down at mid screen, and departs in the lower right screen indicates a short. This is because a short circuit causes a sudden drop in impedance, which is reflected in the TDR display as a sharp downward slope. The fact that the display starts in the upper left corner and departs in the lower right screen suggests a consistent and continuous short circuit throughout the cable.

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  • 38. 

    The RFTLTS is used to diagnose cable faults through voltage standing wave ratio/return loss measurements and

    • A.

      Voltage tests

    • B.

      Continuity tests

    • C.

      Disturbance measurements

    • D.

      Distance to fault measurements

    Correct Answer
    D. Distance to fault measurements
    Explanation
    The RFTLTS (Radio Frequency Time Domain Reflectometer) is a diagnostic tool used to identify cable faults. It does this by measuring the voltage standing wave ratio/return loss and conducting various tests. Among these tests, the RFTLTS is particularly useful in determining the distance to the fault in the cable. By analyzing the time it takes for a signal to travel to the fault and back, the RFTLTS can accurately pinpoint the location of the fault in the cable. This information is crucial for efficient troubleshooting and repair of the cable.

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  • 39. 

    Which key of a RFTLTS do you use to access the alpha portion of the alphanumeric key?

    • A.

      SELECT

    • B.

      TEST

    • C.

      DELETE

    • D.

      ENTER

    Correct Answer
    A. SELECT
    Explanation
    The SELECT key is used to access the alpha portion of the alphanumeric key in a RFTLTS.

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  • 40. 

    Before power is connected the RFTLTS, you must ensure the ON/POWER/OFF switch is in the OFF position and a suitable grounding strap is connected between the grounding lug on the right side of RFTLTS unit 1 and the

    • A.

      Power unit

    • B.

      TDR

    • C.

      Parking ramp

    • D.

      Aircraft

    Correct Answer
    D. Aircraft
    Explanation
    Before power is connected to the RFTLTS, it is important to ensure that the ON/POWER/OFF switch is in the OFF position and a suitable grounding strap is connected between the grounding lug on the right side of RFTLTS unit 1 and the aircraft. This is necessary to prevent any electrical shocks or damage to the equipment and to ensure the safety of personnel working on the RFTLTS. By grounding the RFTLTS to the aircraft, any static electricity or electrical charges can be safely dissipated to the ground, reducing the risk of electrical hazards.

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  • 41. 

    Which unit of the RFTLTS is the accessory kit?

    • A.

      2

    • B.

      1

    • C.

      4

    • D.

      3

    Correct Answer
    A. 2
    Explanation
    The correct answer is 2 because the question asks for the unit of the RFTLTS that is the accessory kit. The options given are 1, 2, 3, and 4. Since the correct answer is 2, it can be inferred that unit 2 is the accessory kit.

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  • 42. 

    To initialize the RFTLTS and verify all the test capabilities are operational, you use the distance to fault, insertion loss, or

    • A.

      Current self alignments

    • B.

      VSWR/return loss self-alignments

    • C.

      Continuity test self alignments

    • D.

      Voltage self alignments

    Correct Answer
    B. VSWR/return loss self-alignments
    Explanation
    To initialize the RFTLTS and verify all the test capabilities are operational, you use VSWR/return loss self-alignments. This is because VSWR (Voltage Standing Wave Ratio) and return loss are important parameters in assessing the performance of an antenna or transmission line. By performing self-alignments for VSWR/return loss, the RFTLTS can ensure that the system is properly calibrated and functioning correctly. This alignment helps in measuring the efficiency of power transfer and identifying any impedance mismatches or signal reflections, which are crucial in maintaining optimal signal quality and transmission performance.

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  • 43. 

    You do not use the UPM-145 radar test set to test receiver-transmitter

    • A.

      Transmitter bandwidth

    • B.

      Frequency

    • C.

      Receiver bandwidth

    • D.

      Power

    Correct Answer
    A. Transmitter bandwidth
    Explanation
    The UPM-145 radar test set is not used to test the transmitter bandwidth. This suggests that the test set is not designed or equipped to measure or evaluate the bandwidth of the transmitter. It may be specifically designed for other purposes such as testing the frequency, receiver bandwidth, or power of the radar system. Therefore, the correct answer is transmitter bandwidth.

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  • 44. 

    Which entry is not provided by the UPN-145 radar test set keyboard?

    • A.

      Range rate

    • B.

      Pulse width

    • C.

      Pulse timing

    • D.

      Range

    Correct Answer
    C. Pulse timing
    Explanation
    The UPN-145 radar test set keyboard provides various entries for radar testing. The options listed are Range rate, Pulse width, Pulse timing, and Range. Among these options, the entry that is not provided by the UPN-145 radar test set keyboard is Pulse timing. This means that the keyboard does not have a specific option or input for adjusting or testing pulse timing in radar systems.

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  • 45. 

    The operating modes of the TS-1843A transponder test set are

    • A.

      MONITOR and CONFIDENCE

    • B.

      TEST and RF

    • C.

      TEST and MONITOR

    • D.

      CONFIDENCE and RF

    Correct Answer
    C. TEST and MONITOR
    Explanation
    The operating modes of the TS-1843A transponder test set are TEST and MONITOR. This means that the test set can be used to perform tests on the transponder and also to monitor its performance. The TEST mode allows for conducting various tests to assess the functionality and accuracy of the transponder, while the MONITOR mode enables continuous monitoring of the transponder's signals and performance in real-time.

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  • 46. 

    Which IFF modes can be checked using the TS-1843A test set?

    • A.

      1, 2 3/a, and C

    • B.

      1, 2, 3/a, and 4

    • C.

      1 and 2

    • D.

      1, 2, and 3/a

    Correct Answer
    A. 1, 2 3/a, and C
    Explanation
    The TS-1843A test set can be used to check IFF modes 1, 2, 3/a, and C.

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  • 47. 

    How many transponder test sequences can be initiated by the TS-3977 on a continuous use basis with a fully charged batter stick?

    • A.

      700

    • B.

      500

    • C.

      1000

    • D.

      300

    Correct Answer
    D. 300
    Explanation
    The TS-3977 can initiate 300 transponder test sequences on a continuous use basis with a fully charged battery stick.

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  • 48. 

    If you press the TEST RPT button on the transponder TS-3977 test set and aim the antenna at the ground, the test code indication should be

    • A.

      F

    • B.

      3

    • C.

      7

    • D.

      O

    Correct Answer
    D. O
    Explanation
    Pressing the TEST RPT button on the transponder TS-3977 test set and aiming the antenna at the ground would result in an indication of "O" on the test code.

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  • 49. 

    You should remove the battery if the TS-3977 test set is to be idle for more than

    • A.

      48 hours

    • B.

      24 hours

    • C.

      1 week

    • D.

      72 hours

    Correct Answer
    B. 24 hours
    Explanation
    The correct answer is 24 hours. It is important to remove the battery if the TS-3977 test set is going to be idle for more than 24 hours. This is likely because leaving the battery in for an extended period of time without use can lead to drainage and potential damage to the battery. Removing the battery ensures that it stays in good condition and prolongs its lifespan.

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  • 50. 

    The TCAS test set does not test the operation of the

    • A.

      Mode-T transponder

    • B.

      Interrogators

    • C.

      Mode-S transponder

    • D.

      Transponders

    Correct Answer
    A. Mode-T transponder
    Explanation
    The TCAS test set is not designed to test the operation of the mode-T transponder. This means that the test set cannot be used to check if the mode-T transponder is functioning correctly. The mode-T transponder is a specific type of transponder used in aviation that responds to Mode A and Mode C interrogations. While the TCAS test set can test the operation of interrogators and mode-S transponders, it is not capable of testing mode-T transponders.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 19, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 06, 2010
    Quiz Created by
    Egramza
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