1-13 l For modern communication needs,
CW is not a preferred method.
Why is this true?
1. CW is slow
2. CW is complicated
3. CW is expensive
4. CW is noisy
1-14 l In an FM transmitter, the audio
signal shifts the carrier
frequency in what network?
1. Audio-shift
2. Phase-shift
3. carrier-shift
4. Band-shift
1-15. In a ssb transmitter the carrier
is removed to concentrate the
power in the sideband(s) .
1.
True
2.
False
1-16. Which of the four receiver
functions involves extraction of
the modulation from the rf
signal?
1.
Detection
2.
Reception
3.
Reproduction
4.
Selection
1-17 l Which of the four receiver
characteristics require
compromise because of bandpass
requirements ?
1. Selectivity and noise
2. Selectivity and fidelity
3. Noise and fidelity
4. Noise and sensitivity
1-18. What term is used to describe
receiver amplification?
1. Fidelity
2. Noise
3.
Gain
4. Power
1-19.
The term “dBm” is based on what
standard reference level?
1.
1 watt
2.
1 volt
3.
1 milliwatt
4.
1 millivolt
1-20. Normal power out is 100 watts.
During PMS, you discover that
power out has dropped by 3dB.
What is the new power out?
1. 97 watts
2. 70 watts
3. 50 watts
4.
3 watts
1-21. How many radio set controls can
be paralleled to one
transmitter/ receiver group?
1. One
2. Two
3. Three
4. Four
1-22 l To transfer control of switched
circuits to another transmitter
or receiver switchboard, you
should use what switch position?
1. Off
2. X
3. Five
4. Six
1-23. Which of the following terms is
used for a machine that operates
as a single-phase transformer?
1.
Servo
2. Synchro
3.
Gyro
4. Compass
1-24. When you use subdivisions to
assign reference designators to
equipment, what is the
designator of the (a) largest
subdivision and (b) smallest
subdivision?
1.
(a) System (b) set
2.
(a) Set
(b) unit
3.
(a) System (b) part
4.
(a) Unit
(b) assembly
1-25. Extremely-low-frequency
transmission is primarily
directed at which of the
following users?
1. Aircraft
2. Shore installations
3. Submarines
4. Surface ships
2
