2A533A Vol.3 Part 2
Preperation quiz for comm/nav mission systems journeyman
- 1.In a pulse-modulation radar system. the pulse repetition frequency is the number of pulses
- A.
That are received within 1 second
- B.
That are transmitted within 1 second
- C.
That strike the target within 1 second
- 2.Which component in a pulse-modulation radar set provides the voltages that operate the other radar components?
- A.
Antenna
- B.
Transmitter
- C.
Power supply
- 3.Which component in a pulse-modulation radar system shapes the radio-frequency energy into a narrow beam?
- A.
Antenna
- B.
Indicator
- C.
Transmitter
- 4.What is produced in the pulse-modulation radar system by heterodyning?
- A.
Very-low frequency
- B.
Very-hight frequency
- C.
Intermediate-frequency
- 5.The screen display on newer types of pulse modulation radar indicator is called
- A.
A map
- B.
A pulse
- C.
A sweep
- 6.In a frequency-shift radar system, the doppler principle makes it possible to instantaneously sense and measure
- A.
Altitude and ground track
- B.
Target elevation and speed
- C.
Ground speed and drift angle
- 7.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?
- A.
They are a constant distance away form each other
- B.
The aircraft is not reflection any of the radar pulses
- C.
The aircraft is flying away from the transmitter/receiver
- 8.In a frequecny-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.
The aircraft is not reflecting any of the radar-pulses
- B.
The aircraft is flying towards the transmitter receiver
- C.
The aircraft is flying away from the transmitter receiver
- 9.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.
The aircraft is not reflecting any of the RDR pulses
- B.
The aircraft is flying towards the RT
- C.
The aircraft is flying away from the RT
- 10.The dimensions of a wave guide determine the wave guide's
- A.
Frequency and phase shift and powerloss
- B.
Frequency and power-handling capabilities
- C.
Voltage standing wave ration and power-handling ability
- 11.The voltage standing-wave ration is determined by comparing the radars's
- A.
Reflected power to the TX power
- B.
Reflected power to the receiver's sensitivity
- C.
Transmitter power to the receiver's sensitivity
- 12.What radar set component provides stabilized pitch and roll reference data for control of antenna orientation, despite changes in aircraft attitude?
- A.
Am-853b
- B.
C-1242a
- C.
Cn-221a
- 13.Which radar set line replaceable unit performs highly accurate electronic beam steering?
- A.
Radar transmitter
- B.
Radar data terminal
- C.
Low observable antenna
- 14.The part of the radar sets low observable antenna that is addressed to steer the radio-frequency beam is the
- A.
Phase control modules
- B.
Radio-frequency roll resolver
- C.
Radio-frequency quadrant manifolds
- 15.To which item does the radar sets dual-channel beam steering controller selectively send digital phasing and polarization commands?
- A.
Phase control module
- B.
Roll electronics assembly
- C.
Roll resolver power supply
- 16.The purpose of the keyed automatic gain control gate while the radar altimeter is in track mode is to
- A.
Encompass and lock-on to the return video pulses
- B.
Be timed to overlap return pulse leading edge
- C.
Control the processing of the ground returns
- 17.Which radar altimeter mode is initiated when on insufficient amount of return video is present during the keyed gain control gate?
- A.
Standby
- B.
Ground map
- C.
Search/loss of track
- 18.The radar altimeter test button provides the capability for testing the low-altitude fly-up circuits in the
- A.
Radar data terminals and terrain following acu's
- B.
Rdr data terminals and ground following acu's
- C.
Tf acu's and delivery acu's
- 19.When is the radar altimeter height indicator OFF flag not displayed?
- A.
The height indicator is turned off
- B.
Power to the radar altimeter is lost
- C.
The radar altimeter is tracking the terrain
- 20.Which radar application is used to produce a pictorial map of the terrain?
- A.
Ground mapping
- B.
Terrain-following
- C.
Terrain avoidance
- 21.Which radar application is used primarily as an aid to navigation?
- A.
Search
- B.
Ground mapping
- C.
Terrain-following
- 22.To achieve amplitude modulation, what device is used to ensure the output signal contains frequencies not present in the input signal?
- A.
Power amp
- B.
Balanced amp
- C.
Non-linear amplifier
- 23.The frequencies created by the heterodyning process in an amplitude-modulated transmitter modulator are the
- A.
Two original frequencies
- B.
Sum of and difference between the tow original frequencies
- C.
Sum of the two original frequencies and two original frequencies
- 24.In a frequency-modulated signal, the amount of frequency modulation is controlled by the modulating signals
- A.
Frequency
- B.
Amplitude
- C.
Phase
- 25.In a frequency-modulated signal, the amount of separation between the sideband frequencies is equal to the
- A.
Carrier frequency
- B.
Rate of carrier swing
- C.
Modulating frequency
Questions: 37 | Attempts: 205 | Last updated: Mar 20, 2022
-
Sample QuestionWhat structural areas are designed to allow maintenance personnel to inspect or service aircraft components?
Questions: 50 | Attempts: 175 | Last updated: Mar 19, 2022
-
Sample QuestionWhat is the purpose of the very-high frequency omnirange system?
Questions: 26 | Attempts: 147 | Last updated: Mar 20, 2022
-
Sample QuestionWhich is not a flight line precaution used to protect electrostatic discharge sensitive components?
Back to top