Volume 5 2A851
- 1.
1. (801) Which part of a radar set amplifies and converts an RF wave into a video signal?
- A.
A. Antenna.
- B.
B. Receiver.
- C.
C. Indicator.
- D.
D. Transmitter.
Correct Answer
B. B. Receiver. -
- 2.
2. (801) How long in μs does it take an RF wave to travel a radar mile?
- A.
A. 12.4μs.
- B.
B. 9.3μs.
- C.
C. 6.2μs.
- D.
D. 3.1μs.
Correct Answer
A. A. 12.4μs. -
- 3.
4. (801) In which radar system is the transmitter turned on for short periods of time and off for long periods of time?
- A.
A. Beacon.
- B.
B. Frequency-shift.
- C.
C. Pulse-modulation.
- D.
D. Frequency-modulation.
Correct Answer
C. C. Pulse-modulation. -
- 4.
5. (801) Accurate location of an object in space by radar pulses depends upon both
- A.
A. altitude and speed.
- B.
B. altitude and range.
- C.
C. range and direction.
- D.
D. speed and direction.
Correct Answer
C. C. range and direction. -
- 5.
3. (801) If a radar echo returns after 310 microseconds, how far away is the target?
- A.
A. 10 miles.
- B.
B. 25 miles.
- C.
C. 50 miles.
- D.
D. 75 miles.
Correct Answer
B. B. 25 miles. -
- 6.
6. (802) Which component in a pulse-modulation radar set supplies the voltages that operate the other radar components?
- A.
A. Antenna.
- B.
B. Indicator.
- C.
C. Transmitter.
- D.
D. Power supply.
Correct Answer
D. D. Power supply. -
- 7.
7. (802) Which component in a pulse-modulation radar system shapes the radio frequency energy into a narrow beam?
- A.
A. Antenna.
- B.
B. Indicator.
- C.
C. Transmitter.
- D.
D. Synchronizer.
Correct Answer
A. A. Antenna. -
- 8.
8. (802) The screen display on newer types of pulse-modulation radar indicators is called a
- A.
A. map.
- B.
B. pulse.
- C.
C. sweep.
- D.
D. spot condition.
Correct Answer
A. A. map. -
- 9.
9. (803) In a frequency-shift radar system, the Doppler principle makes it possible to instantaneously sense and measure
- A.
A. altitude and ground track.
- B.
B. target elevation and speed.
- C.
C. ground speed and drift angle.
- D.
D. magnetic heading and altitude.
Correct Answer
C. C. ground speed and drift angle. -
- 10.
10. (803) 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?
- A.
A. They are a constant distance away from each other.
- B.
B. The aircraft is not reflecting any of the radar pulse.
- C.
C. The aircraft is flying towards the transmitter/receiver.
- D.
D. The aircraft is flying away from the transmitter/receiver.
Correct Answer
C. C. The aircraft is flying towards the transmitter/receiver. -
- 11.
11. (803) 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?
- A.
A. They are a constant distance away from each other.
- B.
B. The aircraft is not reflecting any of the radar pulse.
- C.
C. The aircraft is flying towards the transmitter/receiver.
- D.
D. The aircraft is flying away from the transmitter/receiver.
Correct Answer
D. D. The aircraft is flying away from the transmitter/receiver. -
- 12.
12. (804) Which of the following are types of power loss in radio frequency lines?
- A.
A. Copper, dielectric, and radiation.
- B.
B. Current, dielectric, and emission.
- C.
C. Dielectric, radiation, and current.
- D.
D. Radiation, copper, and conduction.
Correct Answer
A. A. Copper, dielectric, and radiation. -
- 13.
13. (804) If the spacing between the waveguide walls or size of the walls changes, then there will be a change in impedence causing decreased
- A.
A. heat.
- B.
B. power.
- C.
C. reflection.
- D.
D. standing waves.
Correct Answer
B. B. power. -
- 14.
14. (804) What is the most common device used to connect multiple sections of a waveguide system?
- A.
A. Choke-joint.
- B.
B. Adapter plate.
- C.
C. Universal-joint.
- D.
D. Master cylinder.
Correct Answer
A. A. Choke-joint. -
- 15.
15. (804) The function of a dummy load in search and weather radar is to
- A.
A. simulate a capacitive load.
- B.
B. simulate a resistive load.
- C.
C. prevent standing waves.
- D.
D. simulate targets.
Correct Answer
B. B. simulate a resistive load. -
- 16.
16. (805) What circuit is triggered when the AS–653C radar antenna reflector rotates through the aircraft lubber line?
- A.
A. Bearing.
- B.
B. Tilt control.
- C.
C. Stabilization.
- D.
D. Heading marker.
Correct Answer
D. D. Heading marker. -
- 17.
17. (805) Which component in the AN/APN–59 radar system furnishes both pitch and roll drive signals to the antenna stabilization motors?
- A.
A. AM–853B.
- B.
B. CN–221A.
- C.
C. AS–653C.
- D.
D. RT–289G.
Correct Answer
A. A. AM–853B. -
- 18.
18. (806) What is the maximum height that the CARA system computes aircraft altitude above ground level?
- A.
A. 5,000 feet.
- B.
B. 25,000 feet.
- C.
C. 35,000 feet.
- D.
D. 50,000 feet.
Correct Answer
D. D. 50,000 feet. -
- 19.
19. (806) If your aircraft has two CARA systems installed, then how many associated antennas will be installed?
- A.
A. Two.
- B.
B. Three.
- C.
C. Four.
- D.
D. Five.
Correct Answer
C. C. Four. -
- 20.
21. (806) What are all of the functions of the SET knob located on the combined altitude radar altimeter indicator?
- A.
A. As an on/off and brightness control.
- B.
B. As an on/off control and to set the VALI indicator.
- C.
C. As an on/off control and as a test button to check the system.
- D.
D. As an on/off control, to set the VALI indicator, and as a test button to check the system.
Correct Answer
D. D. As an on/off control, to set the VALI indicator, and as a test button to check the system. -
- 21.
22. (806) During the CARA radar altitude indicator’s bright lighting conditions, the ambient light sensor serves to
- A.
A. set the display brightness to dim.
- B.
B. override the dimmer control knob.
- C.
C. allow the user to brighten the display only.
- D.
D. allow the user to both dim or brighten the display.
Correct Answer
B. B. override the dimmer control knob. -
- 22.
20. (806) When reporting altitudes above 100 feet, the digital altitude display of the CARA indicates increments of
- A.
A. one foot.
- B.
B. two feet.
- C.
C. five feet.
- D.
D. ten feet.
Correct Answer
D. D. ten feet. -
- 23.
23. (806) What is the maximum altitude that the analog pointer and dial of the CARA’s radar altitude indicator can display?
- A.
A. 5,000 feet.
- B.
B. 10,000 feet.
- C.
C. 25,000 feet.
- D.
D. 50,000 feet.
Correct Answer
A. A. 5,000 feet. -
- 24.
24. (806) If self-test is manually initiated on the CARA, then for 1.5 seconds the radar altitude indicator will display an illuminated R/T lamp, the pointer will move to
- A.
A. 500 feet, and the digital display will read 88888.
- B.
B. 700 feet, and the digital display will read 88888.
- C.
C. 500 feet, and the digital display will read TEST.
- D.
D. 700 feet, and the digital display will read TEST.
Correct Answer
A. A. 500 feet, and the digital display will read 88888. -
- 25.
25. (807) What is the average operating power in watts of the LPCR system?
- A.
A. 3 W or less.
- B.
B. 5 W or less.
- C.
C. 11 W or less.
- D.
D. 15 W or less.
Correct Answer
C. C. 11 W or less. -
- 26.
26. (807) Which radar application is used to fly along a preselected altitude above the ground?
- A.
A. Search radar.
- B.
B. Ground mapping.
- C.
C. Terrain following.
- D.
D. Terrain avoidance.
Correct Answer
C. C. Terrain following. -
- 27.
27. (807) Which radar application sends data to compute time-to-go parameters?
- A.
A. Search radar.
- B.
B. Weather radar.
- C.
C. Bombing radar.
- D.
D. Synthetis aperture radar.
Correct Answer
C. C. Bombing radar. -
- 28.
28. (808) What establishes the network system time for a Link–16 system?
- A.
A. GPS.
- B.
B. UTC.
- C.
C. NCS.
- D.
D. NTR.
Correct Answer
D. D. NTR. -
- 29.
29. (809) To enhance voice clarity on TADIL J secure digitized voice channels, the operator will select a Kb/s voice rate of
- A.
A. 4 Kb/s.
- B.
B. 8 Kb/s.
- C.
C. 16 Kb/s.
- D.
D. 32 Kb/s.
Correct Answer
C. C. 16 Kb/s. -
- 30.
30. (810) If a unit has the need and capability to participate in both Link–16 and older Link systems, then it will normally be assigned an address between
- A.
A. 00001 to 00177.
- B.
B. 00177 to 00277.
- C.
C. 17700 to 17877.
- D.
D. 17877 to 17977.
Correct Answer
A. A. 00001 to 00177. -
- 31.
31. (810) Which of the following fields does the Link–16 friendly status reports contain?
- A.
A. Activity.
- B.
B. Nationality.
- C.
C. Specific type.
- D.
D. Equipment status.
Correct Answer
D. D. Equipment status. -
- 32.
32. (811) The elapsed time indicator of the R/T indicates the time power has been
- A.
A. applied to the R/T.
- B.
B. removed from the R/T.
- C.
C. applied to digital data processor.
- D.
D. removed from digital data processor.
Correct Answer
A. A. applied to the R/T. -
- 33.
33. (811) If you have a fail indication on the JTIDS digital data processor, then pressing the RESET pushbutton switch on the DDP will reset the fault indicator
- A.
A. and JTIDS system.
- B.
B. and digital data processor.
- C.
C. to clear the related fault cause.
- D.
D. if the related fault cause was corrected.
Correct Answer
D. D. if the related fault cause was corrected. -
- 34.
34. (811) Which subassembly is a part of the CMS?
- A.
A. IU.
- B.
B. SDU.
- C.
C. MIU.
- D.
D. SDCU.
Correct Answer
D. D. SDCU. -
- 35.
35. (811) When transmitting in the high power mode, what is the power output in Wp of the high power amplifier of the JTIDS?
- A.
A. 1050 Wp.
- B.
B. 520 Wp.
- C.
C. 260 Wp.
- D.
D. 130 Wp.
Correct Answer
A. A. 1050 Wp. -
- 36.
36. (812) What power source is used to provide emergency back-up power to the JTIDS terminal to maintain critical data?
- A.
A. Lithium batteries.
- B.
B. Sulphur dioxide batteries.
- C.
C. Nickel-cadmium batteries.
- D.
D. Nickel-metal hydride batteries.
Correct Answer
C. C. Nickel-cadmium batteries. -
- 37.
37. (812) What is the range in MHz of signals that the low pass filter passes?
- A.
A. 240 – 304 MHz.
- B.
B. 480 – 608 MHz.
- C.
C. 960 – 1215 MHz.
- D.
D. 1920 – 2430 MHz.
Correct Answer
C. C. 960 – 1215 MHz. -
- 38.
38. (813) What is the operating band used by the JTIDS?
- A.
A. L.
- B.
B. S.
- C.
C. X.
- D.
D. Ku.
Correct Answer
A. A. L. -
- 39.
39. (813) How many bits of data can be transmitted in a given time slot of a JTIDS?
- A.
A. 258.
- B.
B. 465.
- C.
C. 516.
- D.
D. 930.
Correct Answer
D. D. 930. -
- 40.
40. (814) When can the JTIDS synchronization process be initiated?
- A.
A. Once immediately before a Net Entry message is transmitted.
- B.
B. Every 12 seconds before a Net Entry message is transmitted.
- C.
C. Once immediately after a Net Entry message is transmitted.
- D.
D. Every 12 seconds when a Net Entry message is transmitted.
Correct Answer
D. D. Every 12 seconds when a Net Entry message is transmitted. -
- 41.
41. (814) What are the two processes in which JTIDS fine synchronization are accomplished?
- A.
A. Passive and active
- B.
B. Active and dynamic.
- C.
C. Passive and radio silent.
- D.
D. Radio silent and reflexive.
Correct Answer
A. A. Passive and active -
- 42.
42. (814) If the JTIDS entrant is attempting to achieve fine synchronization by transmitting a round trip time interrogation, then what process is being used?
- A.
A. Active.
- B.
B. Passive.
- C.
C. Dynamic.
- D.
D. Radio silent.
Correct Answer
A. A. Active. -
- 43.
43. (815) Which component of the tactical information gateway system enables beyond line-of-sight coverage?
- A.
A. L-band antennas.
- B.
B. Multipurpose interface panel.
- C.
C. Low noise amplifier/diplexer assembly.
- D.
D. Satellite communication/global positioning system antenna.
Correct Answer
D. D. Satellite communication/global positioning system antenna. -
- 44.
44. (816) What is the purpose of the MIDS data link terminal?
- A.
A. Provide accurate positional data for the data link terminal.
- B.
B. Extend networks BLOS and the local area.
- C.
C. Provide LOS connectivity to a local area network.
- D.
D. Transmit secure data messages across the DAMA satellite network.
Correct Answer
C. C. Provide LOS connectivity to a local area network. -
- 45.
45. (816) To prevent interference and possible terminal shutdowns, what systems are monitored by the TIG system?
- A.
A. TACAN, VOR/ILS and radar altimeter.
- B.
B. IFF, color weather radar, and MLS.
- C.
C. ETCAS and radar altimeter.
- D.
D. IFF, ETCAS, and TACAN.
Correct Answer
D. D. IFF, ETCAS, and TACAN. -
- 46.
46. (817) Which is a MIL-STD 1553 bus standard requirement?
- A.
A. Information will have a very low level of data transfer determinism.
- B.
B. Information will be transferred in a reliable, deterministic, command/response fashion.
- C.
C. Information will not be transferred between bus terminals via a digital serial communications channel.
- D.
D. Electrical interface requirements will not be defined by the standard for all bus terminals and bus terminal connections.
Correct Answer
B. B. Information will be transferred in a reliable, deterministic, command/response fashion. -
- 47.
47. (817) What is the structure of a MIL-STD1553 data word?
- A.
A. 20 bits long consisting of 1 sync bit, 16 data/command/status bits, and 3 parity bits.
- B.
B. 20 bits long consisting of 3 sync bits, 16 data/command/status bits, and 1 parity bit.
- C.
C. 32 bits long consisting of 1 sync bit, 28 data/command/status bits, and 3 parity bits.
- D.
D. 32 bits long consisting of 3 sync bits, 28 data/command/status bits, and 1 parity bit.
Correct Answer
B. B. 20 bits long consisting of 3 sync bits, 16 data/command/status bits, and 1 parity bit. -
- 48.
48. (817) Which of these is not a function of the MIL-STD 1553 data bus mode codes?
- A.
A. Resetting terminals.
- B.
B. Synchronizing the subsystem time.
- C.
C. Executing a BC broadcast command.
- D.
D. Commanding at RT to initiate a system self-test.
Correct Answer
C. C. Executing a BC broadcast command. -
- 49.
49. (817) If a BC sends a command for all RTs to listen to data from another RT, then what type of command is being sent on the MIL-STD 1553 data bus?
- A.
A. Listen command.
- B.
B. System command.
- C.
C. Receive command.
- D.
D. Broadcast command.
Correct Answer
D. D. Broadcast command. -
- 50.
50. (818) The basic element in a computer microchip is
- A.
A. silver.
- B.
B. silicon.
- C.
C. copper.
- D.
D. aluminum.
Correct Answer
B. B. silicon. -
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