Exercise: Communication Systems

Questions for: Communication Systems

The highest modulating frequency typically used in AM systems is
A:
1 kHz
B:
5 kHz
C:
20 kHz
D:
50 kHz
Answer: B
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Which of the following statement regarding the advantages of the phase discriminator over the slope detector is false?
A:
Better linearity
B:
Fewer tuned circuits
C:
Much easier alignment
D:
Greater limiting
Answer: A
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The frequency at which the piezoelectric effect occurs is primarily determined by
A:
the weight of the crystal
B:
thickness of the crystal
C:
length of the crystal
D:
gain structure of the crystal
Answer: B
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Which of the following refers to SSB suppressed carrier amplitude modulated system?
A:
A3E
B:
H3E
C:
J3E
D:
C3F
Answer: C
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In a stereo tape recorder the speed of the tape is
A:
38 m/s
B:
19 m/s
C:
9.5 m/s
D:
4.75 m/s
Answer: D
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