Radio Receivers MCQ

Radio Receivers MCQ

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  • 01st Sep, 2022

Take Radio Receivers MCQ Test & Online Quiz to test your Knowledge

Practice here the best Radio Receivers MCQ Questions that checks your basic knowledge of Radio Receivers. This Radio Receivers MCQ Test contains 20+ Multiple Choice Questions. You have to select the right answer to the question. Finally, you can also download here the Radio Receivers MCQ PDF, completely free.

Radio Receivers MCQ Test

1) The first radio receivers invented by

  • A. Marconi
  • B.Oliver Lodge
  • C.Alexander Popov
  • D.All of the above

2) We should use ............. to prevent overloading of the IF amplifier in a receiver.

  • A. Squelch
  • B.Variable selectivity
  • C.Variable sensitivity
  • D.Double conversion

3) Which of the following circuits can not demodulate SSB?

  • A. Product modulator
  • B.Balance modulator
  • C.Phase discriminator
  • D.None of the above

4) ............ is not a useful quantity for comparing the noise performance of receivers.

  • A. Noise figure
  • B.Noise temperature
  • C.Input noise voltage
  • D.Equivalent noise resistance

5) Why A notch filter is sometimes used in communication receivers?

  • A. Spread the bandwidth
  • B.Made selectivity more precise
  • C.Reduce receiver gain at some specific frequency
  • D.Increase receiver gain at some specific frequency
Download Free : Radio Receivers MCQ PDF

6) For which purpose EM 84 tube is used in radio receivers?

  • A. Magic eye
  • B.RF amplifier
  • C.Audio amplifier
  • D.Full wave rectifier

7) What is the selectivity of a radio receiver?

  • A. Its ability to suppress noise
  • B.Its ability to amplify weak signals
  • C.Its ability to reject adjacent unwanted signals
  • D.None of the above

8) ............. does not happen in transistors?

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

9) What happens, if the intermediate frequency is too low in a radio receiver?

  • 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.All of the above

10) The local oscillator is tuned to a frequency ............... In a radio receiver.

  • A. Equal to incoming frequency
  • B.Lower than the incoming frequency
  • C.Higher than the incoming frequency
  • D.None of the above

11) The selectivity of most receivers is determined largely by .......

  • A. Sensitivity
  • B.Antenna direction
  • C.Characteristics of IF section
  • D.All of the above

12) What does a transmitter serial current contain?

  • A. Audio frequencies
  • B.carrier frequencies
  • C.Radio frequencies
  • D.All of the above

13) What happens, if the intermediate frequency is too high in a radio receiver?

  • A. Selectivity will be poor
  • B.Tracking difficulties will be least
  • C.Adjacent channel rejection will improve
  • D.None of the above

14) Which of the following device has IF input but RF output in a receiver?

  • A. Loudspeaker
  • B.Demodulator
  • C.Audio amplifier
  • D.Frequency changer

15) For which purpose, the neutralization is used in RF amplifiers?

  • A. Stop oscillation
  • B.Improve selectivity
  • C.Increase bandwidth
  • D.None of the above

16) A duplexer is a device used to .................

  • A. Connect two transmitters to the same antenna
  • B.Feed more than one receiver from a single antenna
  • C.Connect a receiver and a transmitter to the same antenna
  • D.None of the above

17) RF amplifiers are used in radio receivers for which purpose?

  • A. Improved image frequency rejection
  • B.Improved rejection of adjacent unwanted signals
  • C.Prevention of re-radiation of the local oscillator through the antenna of the receiver
  • D.All of the above

18) .............. should be used in order to prevent overloading or the last IF amplifier in a receiver.

  • A. Squelch
  • B.Double conversion
  • C.Variable sensitivity
  • D.Variable selectivity

19) Which of the following oscillator is used as a local oscillator in a radio receiver?

  • A. Crystal
  • B.Hartley
  • C.Phase Shift
  • D.Wien-bridge

20) Which of the following is the function of radio receiver?

  • A. Produce radio waves
  • B.Modulate a message signal
  • C.Convert one form of energy into other
  • D.Detect and amplify information signal from the carrier

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