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AM and FM Receivers – 1 – 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

EXPLANATION

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

EXPLANATION

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

EXPLANATION

4. The household radio receiver uses …….. detector.

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

ANSWER

EXPLANATION

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

EXPLANATION

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