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Aircraft Maintenance
Aircraft Maintenance Multiple Choice
Quiz 1
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Q.1
The typical DME ground based responder beacon has a limit of ________ interrogations per second.
a) 2700
b) 270
c) 27
d) 27000
Q.2
The physical distance between the aircraft antenna and the DME transponder antenna is referred to as _________
a) Slant range
b) Slant height
c) Slant angle
d) Slant length
Q.3
The spacing of all channels is 1 Hz.
a) False
b) True
Q.4
Which of the following frequencies are used by an airplane’s DME interrogator?
a) 1025 mHz to 1150 mHz
b) 1025 Hz to 1150 Hz
c) 1025 MHz to 1150 MHz
d) 1025 KHz to 1150 KHz
Q.5
Which of the following is the range of frequency for the transmitting channel of DME transponders?
a) 962 mHz to 1213 mHz
b) 962 Hz to 1213 Hz
c) 962 KHz to 1213 KHz
d) 962 MHz to 1213 MHz
Q.6
How much is the difference between interrogation and reply frequencies?
a) 63 MHz
b) 63 Hz
c) 60 MHz
d) 63 Hz
Q.7
DME facilities use a ___________ Morse code in order to identify themselves.
a) 1,350 MHz
b) 1,350 Hz
c) 150 Hz
d) 150 MHz
Q.8
Terminal transponders generally work to a minimum height above ground of ________
a) 12,000 feet
b) 1200 feet
c) 120 feet
d) 12 feet
Q.9
What is the range of high altitude transponders?
a) 1300 nautical miles
b) 13 nautical miles
c) 100 nautical miles
d) 130 nautical miles
Q.10
How many frequencies are defined for DME interrogations and replies?
a) 25
b) 2520
c) 252
d) 22
Q.11
X channels have both interrogation and reply pulse pairs spaced bymicroseconds.
a) False
b) True
Q.12
The Y channels interrogation pulse pairs are spaced by __________
a) 36 milliseconds
b) 36 seconds
c) 36 microseconds
d) 36 nanoseconds
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