2a553a 2011 Vol 3

100 Questions | Attempts: 127
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    (401) North on a compass rose is

    • 0°
    • 90°
    • 180°
    • 270°
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2A553A 2011 VOL 3 URE CDC QUESTIONS

CDC Quizzes & Trivia

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  • 2. 

    (403) If the airspeed of the aircraft is too fast, a falling bomb

    • Hits the target

    • Overshoots the target

    • Falls short of the target

    • Falls to the side of the target

    Correct Answer
    A. Overshoots the target
  • 3. 

    (403) Air resistance causes a falling bomb to

    • Lag

    • Lead

    • Fall rapid

    • Fall unpredictably

    Correct Answer
    A. Lag
  • 4. 

    (403) A cross wind causes a falling bomb to

    • Hit the target

    • Overshoot the target

    • Fall short of the target

    • Fall left or right of the target

    Correct Answer
    A. Fall left or right of the target
  • 5. 

    (403) The preplanned flight route can be described in the

    • Action point table

    • Release table

    • Gravity table

    • Stores table

    Correct Answer
    A. Action point table
  • 6. 

    (405) What line replaceable unit consists of a gyro-stabilized platform, platform electronics,navigation computer, input/output functions, and power supply?

    • Inertial navigation unit

    • Doppler velocity sensor

    • Terrain-following avionics control unit

    • General navigation avionics control unit

    Correct Answer
    A. Inertial navigation unit
  • 7. 

    (406) During the air align mode of the inertial navigation unit, how should the aircraft be flown?

    • With a slow ascent at a constant velocity

    • With a slow descent at a constant velocity

    • Straight and level, and at a constant velocity

    • As normal; no special considerations are necessary

    Correct Answer
    A. Straight and level, and at a constant velocity
  • 8. 

    (412) In a frequency-shift radar system, what is the relationship between a transmitter/receiver and an aircraft when the received frequency is higher than the transmitted frequency?

    • They are a constant distance away from each other

    • The aircraft is not reflecting any of the radar pulses

    • The aircraft is flying towards the transmitter/receiver

    • The aircraft is flying away from the transmitter/receiver

    Correct Answer
    A. The aircraft is flying towards the transmitter/receiver
  • 9. 

    (412) In a frequency-shift radar system, what is the relationship between a transmitter/receiver and an aircraft when the received frequency is lower than the transmitted frequency?

    • They are a constant distance away from each other

    • The aircraft is not reflecting any of the radar pulses

    • The aircraft is flying towards the transmitter/receiver

    • The aircraft is flying away from the transmitter/receiver

    Correct Answer
    A. The aircraft is flying away from the transmitter/receiver
  • 10. 

    (401) The polar axis is the

    • Axis about which the moon rotates

    • Axis about which the earth rotates

    • Circle equal distance from the poles

    • Circle formed by any plane that passes through the center of the earth

    Correct Answer
    A. Axis about which the earth rotates
  • 11. 

    (431) HAVE QUICK radios resist jamming by

    • Frequency-hopping

    • Retransmission

    • Phase shifting

    • Encryption

    Correct Answer
    A. Frequency-hopping
  • 12. 

    (401) From the prime meridian west to the international dateline, meridians are assigned values of

    • 0° to 90° east

    • 0° to 90° west

    • 0° to 180° east

    • 0° to 180° west

    Correct Answer
    A. 0° to 180° west
  • 13. 

    (402) A vector diagram that shows the effect of the wind on the flight of an aircraft is called the

    • Flight path

    • Wind triangle

    • Navigation chart

    • Destination chart

    Correct Answer
    A. Wind triangle
  • 14. 

    (406) What inertial navigation unit mode is about 45 minutes in duration?

    • Navigate

    • Air align

    • Precision align

    • Stored heading align

    Correct Answer
    A. Precision align
  • 15. 

    (411) Which component in a pulse-modulation radar set provides the voltages that operate the other radar components?

    • Antenna

    • Indicator

    • Transmitter

    • Power supply

    Correct Answer
    A. Power supply
  • 16. 

    (401) The prime meridian is the

    • Circle designated 0° latitude

    • Meridian designated the 180° meridian

    • Meridian passing through Greenwich, England

    • Circle equal distance between the north and south poles

    Correct Answer
    A. Meridian passing through Greenwich, England
  • 17. 

    (402) The effect of wind on an aircraft is

    • Slight

    • Negligible

    • Significant

    • Unimportant

    Correct Answer
    A. Significant
  • 18. 

    (402) The sideward displacement of an aircraft by the wind is called

    • Yaw

    • Drift

    • Deviation

    • Groundspeed

    Correct Answer
    A. Drift
  • 19. 

    (402) The rate of movement of an aircraft relative to the Earth’s surface is called

    • Drift

    • Velocity

    • Airspeed

    • Groundspeed

    Correct Answer
    A. Groundspeed
  • 20. 

    (402) What is used to correct true heading and allow the aircraft to make good the desired true course?

    • Drift correction

    • Wind disbursement

    • Airspeed correction

    • Ground speed correction

    Correct Answer
    A. Drift correction
  • 21. 

    (416) Which radar application is used to produce a pictorial map of the terrain?

    • Ground mapping

    • Terrain-following.

    • Terrain avoidance

    • Synthetic aperture radar

    Correct Answer
    A. Ground mapping
  • 22. 

    (401) In navigation, the primary reference is

    • 0°

    • 90°

    • North

    • The equator

    Correct Answer
    A. North
  • 23. 

    (405) Below what temperature does the modulator valve close to prevent over-cooling of the inertial navigation unit?

    • 80°F

    • 90°F

    • 120°F

    • 170°F

    Correct Answer
    A. 80°F
  • 24. 

    (405) What avionics multiplexing (MUX) data bus provides the path for the inertial navigation unit to communicate with the avionics control unit complex and, eventually, all other aircraft systems?

    • AMUX

    • BMUX

    • CMUX

    • DMUX

    Correct Answer
    A. AMUX
  • 25. 

    (411) Which component in a pulse-modulation radar system shapes the radio-frequency energy into a narrow beam?

    • Antenna

    • Indicator

    • Transmitter

    • Synchronizer

    Correct Answer
    A. Antenna
  • 26. 

    (412) In a frequency-shift radar system, what is the relationship between a transmitter/receiver and an aircraft when no frequency shift between them can be measured?

    • They are a constant distance away from each other

    • The aircraft is not reflecting any of the radar pulses

    • The aircraft is flying towards the transmitter/receiver

    • The aircraft is flying away from the transmitter/receiver

    Correct Answer
    A. They are a constant distance away from each other
  • 27. 

    (432) When two signals are received simultaneously on the same operating net, the HAVE QUICK II radio automatically goes into conferencing by

    • Resetting the net number for communication

    • Setting the receiver to narrowband reception

    • Offsetting the second transmitter frequency by 25 kilohertz

    • Injecting a beat frequency to make both signals unintelligible

    Correct Answer
    A. Offsetting the second transmitter frequency by 25 kilohertz
  • 28. 

    (403) A head wind causes a falling bomb to

    • Hit the target

    • Overshoot the target

    • Fall short of the target

    • Fall left or right of the target

    Correct Answer
    A. Fall short of the target
  • 29. 

    (408) Which global positioning system component is passive, meaning it does not require power, adjustments, or controls to function?

    • Antenna

    • Receiver

    • Antenna amplifier

    • Antenna controller

    Correct Answer
    A. Antenna
  • 30. 

    (410) In a pulse-modulation radar system, the transmitter does not interfere with the receiver because the transmitter

    • Is turned off after each pulse

    • Shifts the frequency of the pulse

    • Transmits on a different frequency

    • Uses a different antenna than the receiver

    Correct Answer
    A. Is turned off after each pulse
  • 31. 

    Which system utilizes the equator as one fixed reference point and the Greenwich meridian as the other fixed reference point?

    • Aircraft landing

    • Inertial navigation

    • Instrument landing

    • Geographic coordinate

    Correct Answer
    A. Geographic coordinate
  • 32. 

    (401) From the prime meridian east to the international dateline, meridians are assigned values of

    • 0° to 90° east

    • 0° to 90° west

    • 0° to 180° east

    • 0° to 180° west

    Correct Answer
    A. 0° to 180° east
  • 33. 

    (404) Which is used to maintain accelerometer orientation in the inertial navigation system?

    • Summing unit

    • Computer

    • Integrator

    • Platform

    Correct Answer
    A. Platform
  • 34. 

    (411) What is produced in the pulse-modulation radar system by heterodyning?

    • High-frequency

    • Very-low frequency

    • Very-high frequency

    • Intermediate-frequency

    Correct Answer
    A. Intermediate-frequency
  • 35. 

    (415) Which radar altimeter mode is initiated when an insufficient amount of return video is present during the keyed automatic gain control gate?

    • Track

    • Standby

    • Ground map

    • Search/loss of track

    Correct Answer
    A. Search/loss of track
  • 36. 

    (429) A very-high frequency frequency-modulated radio is mainly used on aircraft that

    • Contact Army ground troops

    • Use Air Force-controlled airfields

    • Contact airborne tankers for refueling

    • Are under the control of civilian air traffic controllers

    Correct Answer
    A. Contact Army ground troops
  • 37. 

    What is formed on the surface of the Earth by any plane that passes through the center of the Earth and divides it into two equal parts?

    • Equator

    • Great circle

    • Parallel of latitude

    • Meridian of longitude

    Correct Answer
    A. Great circle
  • 38. 

    (402) On navigation charts, the lines that connect points of equal magnetic variation are called

    • Agonic

    • Isogonic

    • Variation lines

    • Deviation lines

    Correct Answer
    A. Isogonic
  • 39. 

    (404) The changing of position with respect to some other body is called

    • Speed

    • Motion

    • Velocity

    • Reference

    Correct Answer
    A. Motion
  • 40. 

    (407) How many radio-frequency signals are transmitted from each global positioning system satellite?

    • One

    • Two

    • Three

    • Four

    Correct Answer
    A. Two
  • 41. 

    (408) Which global positioning system unit provides a display for the ARN–151?

    • Mount

    • Receiver

    • Indicator control

    • Antenna controller

    Correct Answer
    A. Indicator control
  • 42. 

    (410) In which radar system is the transmitter turned on for short periods of time and off for long periods of time?

    • Beacon

    • Frequency-shift

    • Pulse-modulation

    • Frequency-modulation

    Correct Answer
    A. Pulse-modulation
  • 43. 

    (407) In the global positioning system, almanac data is transmitted to each satellite to update the navigation data message once every

    • 6 hours

    • 12 hours

    • 24 hours

    • 48 hours

    Correct Answer
    A. 24 hours
  • 44. 

    (425) A receiving radio antenna receives radio-frequency signals by

    • Accepting and amplifying the minute current

    • Removing the radio-frequency carrier wave

    • Converting energy to magnetic and electrical fields of force

    • Electromagnetic fields impressing a voltage across the antenna, thus causing current to flow

    Correct Answer
    A. Electromagnetic fields impressing a voltage across the antenna, thus causing current to flow
  • 45. 

    (405) Which component is the central controller for the inertial navigation unit?

    • Navigation computer

    • Platform electronics

    • Stabilized platform

    • Power supply

    Correct Answer
    A. Navigation computer
  • 46. 

    (405) The indicators on the front of the inertial navigation unit are used to

    • Provide inputs during checkout

    • Allow adjustments to the inertial navigation unit

    • Identify malfunctions within the inertial navigation unit

    • Indicate the normal operation of the inertial navigation unit

    Correct Answer
    A. Identify malfunctions within the inertial navigation unit
  • 47. 

    (421) The ability of a radio receiver to reproduce weak signals is called

    • Reproduction

    • Sensitivity

    • Reception

    • Detection

    Correct Answer
    A. Sensitivity
  • 48. 

    (422) In a typical amplitude-modulated superheterodyne receiver, the process used to tune two or more circuits with a single control is called

    • Slug tuning

    • Ganged tuning

    • Parallel tuning

    • Staggered tuning

    Correct Answer
    A. Ganged tuning
  • 49. 

    (428) If the external blower for an ARC–190 high-frequency radio system is overheating, it causes a receiver-transmitter fault and

    • Keeps the coupler from tuning

    • Reduces the external blower speed

    • Keeps the transmitter from functioning

    • Causes the receiver/transmitter fault light to turn off

    Correct Answer
    A. Keeps the transmitter from functioning

Quiz Review Timeline (Updated): Mar 17, 2022 +

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

  • Current Version
  • Mar 17, 2022
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 21, 2011
    Quiz Created by
    Donaldtatter
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