AM and FM Receivers – Exercise – 1

AM and FM Receivers » Exercise – 1

1. In AM receiver the oscillator frequency is –

(a) Always equal to signal frequency
(b) Always equal to 455 kHz
(c) Always higher than signal frequency
(d) Always lower than signal frequency

Answer
Answer : (c)
Explanation
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2. Which of the following receiver does not have amplitude limiter stage?

(a) AM
(b) FM
(c) Both AM and FM
(d) None of these

Answer
Answer : (a)
Explanation
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3. High intermediate frequency in a superheat receiver :

(a) improves selectivity
(b) Increases tracking problems
(c) Reduces adjacent channel rejection
(d) All of the above

Answer
Answer : (b)
Explanation
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4. The household radio receiver uses …….. detector.

(a) Envelope
(b) Radio
(c) Synchronous
(d) Any of the above

Answer
Answer : (a)
Explanation
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5. Most of the amplification of the received signal is obtained in a super heterodyne receiver from the ……. Stage.

(a) IF
(b) RF
(c) Power amplifier
(d) None of the above

Answer
Answer : (a)
Explanation
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