17th
Apr
Radio Receivers MCQ

Radio Receivers MCQ

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  • 17th Apr, 2021
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Radio Receivers MCQ Test

Following are mostly asked Radio receivers MCQ test that are designed for professionals like you to crack you interviews. You can take this Radio receivers online test before appearing to you real interview. This Radio receivers quiz there are around 30+ multiple choice questions on Radio receivers with four options.

1) An AM receiver uses a diode detector for demodulation. This enables it satisfactorily to receive

  • A. Single-sideband, full-carrier
  • B. ISB
  • C. Single-sideband, suppressed-carrier
  • D. Single-sideband, reduced-carrier

2) Three-point tracking is achieved with

  • A. Double spotting
  • B. Double conversion
  • C. The padder capacitor
  • D. Variable selectivity

3) Indicate the false statement. Noting that no carrier is transmitter with J3E, we see that

  • A. Production of AGC is a rather complicated process
  • B. The transmission is not compatible with A3E
  • C. The receiver cannot use a phase comparator for AFC
  • D. Adjacent-channel rejection is more difficult

4) The typical squelch circuit cuts off

  • A. An IF amplifier when the AGC is maximum
  • B. An IF amplifier when the AGC is minimum
  • C. RF interference when the signal is weak
  • D. an audio amplifier when the carrier is absent

5) A superheterodyne receiver with an IF of 450 kHz is tuned to a signal at 1200 kHz. The image frequency is

  • A. 2100 kHz
  • B. 1650 kHz
  • C. 900 kHz
  • D. 750 kHz
Download Free : Radio Receivers MCQ PDF

6) The selectivity of most receivers is determined largely by …………

  • A. antenna direction
  • B. sensitivity
  • C. characteristics of IF section
  • D. All of the above

7) In a radio receiver, if the intermediate frequency is too low

  • A. Selectivity will be too sharp
  • B. Image-frequency rejection will improve
  • C. The frequency selectivity of the local oscillator will have to be lowered
  • D. None of the above

8) The output of a diode detector contains

  • A. RF ripple
  • B. modulating signal
  • C. D.C. voltage
  • D. all of the above

9) Which of the following noise does not occur in transistors?

  • A. Resistance noise
  • B. Flicker noise
  • C. Shot noise
  • D. Partition noise

10) The selectivity of a radio receiver is ……….

  • A. its ability to suppress noise.
  • B. the frequency at which it gives maximum amplification to signal.
  • C. its ability to amplify weak signals
  • D. its ability to reject adjacent unwanted signals

11) EM 84 tube is used in radio receivers as

  • A. full wave rectifier
  • B. audio amplifier
  • C. magic eye
  • D. RF amplifier

12) Which of the following statement about receivers is false?

  • A. Variable sensitivity is used to improve selectivity
  • B. Variable sensitivity is used to eliminate selective fading
  • C. Double conversion is used to improve image rejection
  • D. Double conversion is used to improve selectivity

13) Which of the following is same in AM and FM receivers?

  • A. IF amplifier
  • B. AGC
  • C. Demodulator
  • D. All of the above

14) A notch filter is sometimes used in communication receivers to

  • A. spread the bandwidth
  • B. made selectivity more precise
  • C. increase receiver gain at some specific frequency
  • D. reduce receiver gain at some specific frequency

15) In a superheterodyne receiver

  • A. the RF stage has same selectivity than IF stage
  • B. the RF stage has better selectivity than IF stage
  • C. the IF stage has better selectivity than RF stage
  • D. None of the above

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