Modulation and Demodulation MCQ

Modulation and Demodulation MCQ

  • Admin
  • 17th Apr, 2021

Take Modulation and Demodulation MCQ Test & Online Quiz to test your Knowledge

Below is the Modulation and Demodulation MCQ test that checks your basic knowledge of Modulation and Demodulation. This Modulation and Demodulation MCQ Test contains 20 Multiple Choice Questions. You have to select the right answer to the question. Finally, you can also take the Online Quiz from the Take Modulation and Demodulation Quiz Button.

Modulation and Demodulation MCQ Test

1) What is modulation?

  • A. Modulation is the process of transmitting data information in coded form, over a carrier.
  • B.Modulation is the process of extracting data information in decoded form, over a carrier.
  • C.Both A and B
  • D.All of the above

2) Modulation is done in ____.

  • A. Transmitter
  • B.Radio receiver
  • C.Between transmitter and radio receiver
  • D.None of the above

3) What do you mean by demodulation?

  • A. Demodulation is the process of transmitting data information in the decoded form, over a carrier.
  • B.Demodulation is the process of extracting data information in the decoded form, over a carrier.
  • C.Both A and B
  • D.None of the above

4) The process of Modulation is done by the _____.

  • A. Modulator
  • B.Demodulator
  • C.Translator
  • D.All of the above

5) A ______ is an electronic circuit (or computer program in a software-defined radio) that is used to recover the information content from the modulated carrier wave.

  • A. Demodulator
  • B.Modulator
  • C.Translator
  • D.All of the above

6) Which of the following is used for Modulation and Demodulation?

  • A. Modem
  • B.Gateway
  • C.Protocols
  • D.Multiplexer

7) Superhertodyne principle refers to:

  • A. Using a large number of amplifier stages
  • B.Using a push-pull circuit
  • C.Obtaining lower fixed intermediate frequency
  • D.None of the above

8) What do you know about Modem?

  • A. The Modem is an electronic device that is used for data transposition between two ends.
  • B.TV
  • C.Phoneline
  • D.The Modem is used for displaying data.

9) Overmodulation (amplitude) occurs when signal amplitude is ____ carrier amplitude.

  • A. equal to
  • B.greater than
  • C.less than
  • D.None of the above

10) In India, _____ modulation is used for radio transmission.

  • A. Frequency
  • B.Amplitude
  • C.Phase
  • D.All of the above

11) In a radio receiver, noise is generally developed at ____.

  • A. IF stage
  • B.Receiving antenna
  • C.Audio stage
  • D.RF stage

12) In TV transmission, sound signal is ____ modulated.

  • A. Amplitude
  • B.Frequency
  • C.Phase
  • D.None of the above

13) A high Q tuned circuit will permit an amplifier to have high ____.

  • A. Fidelity
  • B.Selectivity
  • C.Sensitivity
  • D.Frequency range

14) The major advantage of FM (Frequency modulation) over AM (Amplitude modulation) is ____.

  • A. Reception is less noisy
  • B.Higher carrier frequency
  • C.Smaller bandwidth
  • D.Small frequency deviation

15) What is the full form of AVC?

  • A. Audio voltage control
  • B.Abrupt voltage control
  • C.Automatic volume control
  • D.Automatic voltage control

16) When the modulating signal controls the frequency of the carrier, we get ____.

  • A. Phase modulation
  • B.Amplitude modulation
  • C.Frequency modulation
  • D.All of the above

17) In a radio receiver, we generally use _______ oscillator as a local oscillator.

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

18) In an AM wave, the majority of the power is in _____.

  • A. Lower sideband
  • B.Upper sideband
  • C.Carrier
  • D.None of the above

19) The diode detector in an AM radio receiver is usually found ___.

  • A. before the first RF stage
  • B.after the first RF stage
  • C.after several stages of amplification
  • D.None of the above

20) As the modulation level is increased, the carrier power _____.

  • A. is increased
  • B.remains the same
  • C.is decreased D.
  • D.None of the above

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