Gibilisco: MCQ in Data Reception | ECE Board Exam

(Last Updated On: March 16, 2020)

Multiple choice questions in Data Reception

This is the Multiple Choice Questions (MCQs) in Chapter 27: Data Reception from the book Teach Yourself Electricity and Electronics, 5th edition by Stan Gibilisco. If you are looking for a reviewer in Electronics Engineering this will definitely help you before taking the Board Exam.

Start Practice Exam Test Questions

1. The reflected wave in a radio signal:

  • A. Travels less distance than the direct wave.
  • B. Travels just as far as the direct wave.
  • C. Travels farther than the direct wave.
  • D. Might travel less far than, just as far as, or farther than the direct wave.

2. The reflected wave:

  • A. Arrives in phase with the direct wave.
  • B. Arrives out of phase with the direct wave.
  • C. Arrives in a variable phase compared with the direct wave.
  • D. Is horizontally polarized.

3. The ionospheric layer that absorbs radio waves is:

  • A. The D layer.
  • B. The E layer.
  • C. The F layer.
  • D. No layers ever absorb radio waves.

4. The highest layer of the ionosphere is:

  • A. The D layer.
  • B. The E layer.
  • C. The F layer.
  • D. Dependent on the time of day and the solar cycle.

5. Radio waves that curve earthward in the lower atmosphere are being affected by:

  • A. Troposcatter.
  • B. The D layer.
  • C. Ionospheric ducting.
  • D. Tropospheric bending.

6. Single-sideband can be demodulated by:

  • A. An envelope detector.
  • B. A diode.
  • C. A BFO and mixer.
  • D. A ratio detector.

7. A diode and capacitor can be used to detect:

  • A. CW.
  • B. AM.
  • C. SSB.
  • D. FSK.

8. The S + N/N ratio is a measure of.

  • A. Sensitivity.
  • B. Selectivity.
  • C. Dynamic range.
  • D. Adjacent-channel rejection.

9. The ability of a receiver to perform in the presence of strong signals is a consequence of its:

  • A. Sensitivity.
  • B. Noise figure.
  • C. Dynamic range.
  • D. Adjacent-channel rejection.

10. A receiver that responds to a desired signal, but not to one very nearby in frequency, has good:

  • A. Sensitivity.
  • B. Noise figure.
  • C. Dynamic range.
  • D. Adjacent-channel rejection.

11. An AM receiver can be used to demodulate FM by means of:

  • A. Envelope detection.
  • B. Product detection.
  • C. Slope detection.
  • D. Pulse detection.

12. An FM detector with built-in limiting is:

  • A. A ratio detector.
  • B. A discriminator.
  • C. An envelope detector.
  • D. A product detector.

13. Time-division multiplex is often done with:

  • A. AM.
  • B. FM.
  • C. FSK.
  • D. PM.

14. A continuously variable signal is recovered from a signal having discrete states by:

  • A. A ratio detector.
  • B. A D/A converter.
  • C. A product detector.
  • D. An envelope detector.

15. Digital modulation is superior to analog modulation in the sense that:

  • A. Analog signals have discrete states, while digital ones vary continuously.
  • B. Digital signals resemble noise less than analog ones.
  • C. Digital signals are easier to use with FM.
  • D. Digital signals have greater bandwidth.

16. A product detector would most often be used to receive:

  • A. AM.
  • B. CW.
  • C. FM.
  • D. None of the above.

17. To receive UHF signals on a shortwave receiver, you would need:

  • A. A heterodyne detector.
  • B. A product detector.
  • C. An up converter.
  • D. A down converter.

18. Image rejection in a superhet receiver is enhanced by:

  • A. Front-end selectivity.
  • B. A product detector.
  • C. A variable LO.
  • D. A sensitive IF amplifier chain.

19. A low IF is not practical with a single-conversion receiver because:

  • A. Product detection cannot be used.
  • B. The image frequency would be too close to the incoming-signal frequency.
  • C. Sensitivity would be impaired.
  • D. Adjacent-channel rejection would be poor.

20. Digital signal processing can be used to advantage with:

  • A. SSB.
  • B. SSTV.
  • C. FSK.
  • D. Any of the above.

Complete List of Multiple Choice Questions from this Book

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