Exercise: Radio Receivers

Questions for: Radio Receivers

The noise produced by a resistor is proportional to
A:
absolute temperature
B:
(absolute temperature)2
C:
D:
Answer: A
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In a broadcast superheterodynes receiver having no RF amplifier, the loaded Q of the antenna coupling circuit is 100. If the intermediate frequency is 455 kHz. The image frequency at 25 MHz will be
A:
24.09 MHz
B:
24.54 MHz
C:
25.45 MHz
D:
25.91 MHz
Answer: D
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A transmitter serial current contains
A:
carrier frequencies
B:
audio frequencies
C:
radio frequencies
D:
none of the above
Answer: C
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Standard AM radio broadcasts are confined to
A:
MF
B:
HF
C:
VHF
D:
UHF
Answer: A
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Transistor are free from which type of noise?
A:
Resistance noise
B:
Partition noise
C:
Flicker noise
D:
Shot noise
Answer: B
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