Part 2 Example Questions Flashcards
DME reply pulses are 63 MHz:
a) higher
b) lower
c) higher or lower
Higher or lower
Flight director incompatible modes are:
a) VOR and glideslope
b) heading and altitude hold
c) VOR and altitude hold
Heading and altitude hold
GPS sends L1 and L2. What is on L1?
a) C/A code only
b) C/A code and P code
c) P code only
C/A code and P code
On power up, the IRS obtains position:
a) latitude from previous position
b) longitude from previous position
c) latitude and longitude from previous position
Latitude and longitude from previous position
In the air traffic control transponder system, aircraft altitude signals are sent to ground radar in response to mode:
a) C interrogations
b) S interrogations
c) A interrogations
C interrogations
The Radio Altimeter output is affected by:
a) barometric altitude
b) height above the ground immediately below the aircraft
c) the mode selected on the AFCS
Height above the ground immediately below the aircraft
Where is precession ‘felt’ in a gyroscope?
a) at the point the force is applied
b) at 90° in the opposite direction of rotation
c) at 90° in the direction of rotation
At 90° in the direction of rotation
HF systems:
a) cannot be used on high speed aircraft because a long wire antenna is required
b) presents a significant hazard to maintenance personnel when operated on the ground
c) is limited to a smaller number of channels than VHF because VHF frequencies are much higher
Presents a significant hazard to maintenance personnel when operated on the ground
The ILS system localiser provides:
a) vertical deviations from the required landing flight path
b) lateral deviations from the required landing flight path
c) lateral deviations from the desired track
Lateral deviations from the required landing flight path
The system used to determine the slant range distance from the aircraft to a ground station is:
a) VOR
b) TCAS
c) DME
DME
As part of the ATC transponder system, the mode which has the capability of the other two is mode:
a) A
b) C
c) S
S
Carbon microphones require:
a) DC supply
b) AC supply
c) no supply
DC supply
The maximum azimuth coverage by a MLS facility is:
a) ± 35°
b) ± 40°
c) ± 60°
± 40°
The speech frequency ‘range’ used in airborne radio communications is:
a) 3 MHz to 30 MHz
b) 30 Hz to 300 Hz
c) 300 Hz to 3 kHz
300 Hz to 3 kHz
The HF band is from:
a) 118 MHz to 136.995 MHz
b) 30 MHz to 300 MHz
c) 3 MHz to 30 MHz
3 MHz to 30 MHz
The power output of a VHF system is:
a) 300 watts
b) 55 watts
c) 25 watts
25 watts
At jet cruising altitudes, the range of VHF transmissions is in the region of:
a) 2500 nm
b) 125 nm
c) 250 nm
250 nm
The VHF international aeronautical distress frequency is:
a) 121.5 MHz
b) 221.5 MHz
c) 243.0 MHz
121.5 MHz
Aircraft VHF communication systems use the frequency range of:
a) 118 MHz to 136.995 MHz
b) 3 MHz to 30 MHz
c) 30 MHz to 300 MHz
118 MHz to 136.995 MHz
To receive a vertically polarised RF signal, the antenna is required to be:
a) vertical
b) horizontal
c) either vertical or horizontal
Vertical
When transmitting a VHF band signal, the length of the antenna will be:
a) longer than an antenna used for LF band
b) shorter than an antenna used for UHF band
c) shorter than an antenna used for LF band
Shorter than an antenna used for LF band
In a basic AM receiver, the:
a) amplifier allows the EM wave to be developed into an electrical signal
b) oscillator selects and amplifies the required signal
c) demodulator removes the carrier and keeps the original modulating signal
Demodulator removes the carrier and keeps the original modulating signal
The DC tuning voltage in a frequency synthesiser is taken from the:
a) VCO
b) frequency divider circuit
c) frequency and phase comparator
Frequency and phase comparator
In HF, the skip distance will be:
a) greatest during the night
b) at a peak during the daytime
c) the same at night as during the day
Greatest during the night
What is the channel spacing for VHF above FL 195?
8.33 kHz giving 2280 channels
Where is the power supply for the number 1 V/UHF transceiver taken from?
Battery busbar
What is the channel by which applications communicate in an IMA system called?
Logical
The payload of an ARINC 664 Part 7 message is 13 bytes, how many padding bytes are required?
4
