Discussion
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- Question
Superheterodyne receiver can be used in
Options- A. AM
- B. FM
- C. SSB
- D. All of the above
- Correct Answer
- All of the above
- 1. The household radio receiver uses
Options- A. synchronous
- B. envelope detector
- C. radio detector
- D. none of the above Discuss
- 2. Most of the amplification of the received signal is obtained in a superheterodyne receiver from the
Options- A. IF stage
- B. RF stage
- C. power amplification stage
- D. none of the above Discuss
- 3. The typical squelch circuit
Options- A. cuts off an IF amplifier when the AGC is maximum
- B. cuts off an IF amplifier when the AGC is minimum
- C. cuts off an audio amplifier when the carrier is absent
- D. eliminates the RF interference when the signal is weak Discuss
- 4. A receiver having poor IF selectivity will also have poor
Options- A. sensitivity
- B. double spotting
- C. blocking
- D. all of the above Discuss
- 5. 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 1000 kHz will be
Options- A. 1010 kHz
- B. 1455 kHz
- C. 1910 kHz
- D. 545 kHz Discuss
- 6. A low ratio of the A.C. load impedance of a diode detector results in
Options- A. diagonal clipping
- B. poor AGC operation
- C. poor AF response
- D. negative peak clipping Discuss
- 7. Vividh Bharati programme is transmitted in
Options- A. short wave
- B. medium frequency
- C. very high frequency
- D. all of the above Discuss
- 8. Statement 1
Diode is the most common device used for demodulation.
Statement 2
A discriminator is a FM detector.
Options- A. Statement 1 is true but statement 2 is false
- B. Statement 1 is false but statement 2 is true
- C. Both the statements are true
- D. Both the statements are false Discuss
- 9. Three point tracking can be achieved with
Options- A. gang condenser
- B. variable selectivity
- C. paddar capacitor
- D. any of the above Discuss
- 10. In a transistor receiver, the use of FET as the first stage amplifier is likely to
Options- A. improve selectivity of the receiver
- B. improve the effectiveness of the AGC
- C. reduce the effect of negative peak clipping
- D. reduce the effect of noise at all frequencies Discuss
Radio Receivers problems
Search Results
Correct Answer: envelope detector
Correct Answer: IF stage
Correct Answer: cuts off an audio amplifier when the carrier is absent
Correct Answer: blocking
Correct Answer: 1910 kHz
Correct Answer: negative peak clipping
Correct Answer: medium frequency
Correct Answer: Both the statements are true
Correct Answer: variable selectivity
Correct Answer: reduce the effect of negative peak clipping
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