25th
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Communication Systems MCQ

Communication Systems MCQ

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  • 25th Aug, 2022
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Communication Systems MCQ Questions

Take Communication Systems MCQ Test & Online Quiz to test your Knowledge

Practice here the best Communication Systems MCQ Questions test that checks your basic knowledge of Communication Systems. This Communication Systems MCQ Test contains 20+ Multiple Choice Questions. You have to select the right answer to the question. Apart from this, you can also download here Communication System MCQ PDF, completely free.

Communication Systems MCQ Test

1) ....... is an indirect way of generating FM?

  • A. Varactor diode modulator
  • B.Armstrong modulator
  • C.Reactance FET modulator
  • D.None of These

2) Which of the following option is correct about the frequency range of 300 kHz to 3000 kHz?

  • A. High frequency
  • B.Medium frequency
  • C.Low frequency
  • D.None of These

3) Which of the following is the correct option about the purpose of peak clipper circuits in radio transmitters?

  • A. To reduce bandwidth
  • B.To increase bandwidth
  • C.To prevent overmodulation
  • D.To regulate oscillator I/P voltage

4) Pulse modulation is often used in .........

  • A. Telegraphy
  • B.FL band
  • C.Microwave band
  • D.None of These

5) Which of the following is the power rating of radio transmitters?

  • A. 10 kw
  • B.10 w
  • C.10 mw
  • D.All of the above

6) Which of the following is a buffer amplifier?

  • A. A double-tuned amplifier
  • B.A cathode follower stage
  • C.A high gain D.C. amplifier
  • D.None of the above

7) Which of the following communication transmission media is open space or free space?

  • A. Line
  • B.Radio
  • C.Transmitter
  • D.None of These

8) Which of the following option is used in time division multiplexing?

  • A. Analog circuit
  • B.Modulation circuit
  • C.Digital circuit
  • D.Multiplier circuit

9) .........proposed the use of clad waveguide structure.

  • A. Edward Appleton
  • B.James Maxwell
  • C.Schriever
  • D.Kao and Hockham

10) Does voltage to frequency converter performs frequency modulation?

  • A. Yes
  • B.No

11) Which of the following option exhibits a contributory role in an invention of CDMA system?

  • A. Dualcomm
  • B.Unicomm
  • C.Pentacomm
  • D.Qualcomm

12) Which of the following can be used to analyze the frequency response of a room?

  • A. Pink Noise Generator
  • B.Spectrum Analyzer
  • C.Amplitude
  • D.Both 1 & 2

13) Voltage signal generated by a microphone is ...........

  • A. Digital in Nature
  • B.Hybrid in Nature
  • C.Analog in Nature
  • D.None of the above

14) Voltage signal generated by a microphone is ...........

  • A. Digital in Nature
  • B.Hybrid in Nature
  • C.Analog in Nature
  • D.None of the above

15) Which of the following is the frequency of sky waves?

  • A. More than 3MHz
  • B.Less than 3MHz
  • C.Less than 2MHz
  • D.None of the above

16) Amplitude of module wave is ....... in frequency modulation.

  • A. Negative
  • B.Positive
  • C.Constant
  • D.Zero

17) Frequency of modulated wave varies with............ in FM.

  • A. Wavelength
  • B.Aplitude
  • C.Time
  • D.Energy

18) which of the following person had introduced the theory of waves?

  • A. Maxwell
  • B.Marconi
  • C.Hertz
  • D.Bell

19) which of the following person had sent the first radio signal across the Atlantic ocean?

  • A. Bell
  • B.Maxwell
  • C.Marconi
  • D.Hertz

20) What is must include in a complete communication system?

  • A. A transmitter and receiver
  • B.A transmitter, a receiver, and a channel
  • C.A multiplexer, a demultiplexer, and a channel
  • D.A transmitter, a receiver, and a spectrum analyzer

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