☰ Basic Electronics Engineering (Electrical Engineering) - MCQs

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Q13.

An emitter of a bipolar junction transistor is doped much more heavily then the base as it increases the

  • A. emitter efficiency
  • B. base transport factor
  • C. forward current gain
  • D. all the three given above
    ✍ Discuss    
Q14.

Precision diode can be used as

  • A. half wave rectifier
  • B. full wave rectifier
  • C. clipper and clamper
  • D. all of the above
    ✍ Discuss    
Q15.

A clipper circuit always

  • A. needs a dc source
  • B. clips some part of the input signal
  • C. clips super portion of input signal
  • D. clips both half cycles of input signal
    ✍ Discuss    
Q16.

If capacitor value increases in a capacitor filter, then the ripple factor

  • A. increases
  • B. becomes zero
  • C. decreases
  • D. none of these
    ✍ Discuss    
Q17.

The primary function of a filter is to

  • A. minimum ac input variations
  • B. suppress odd harmonics the rectifier output
  • C. stabilize dc level of the output voltage
  • D. remove ripples from the rectified output
    ✍ Discuss    
Q18.

A Schottky diode is

  • A. a majority carrier device
  • B. a minority carrier device
  • C. a fast recovery diode
  • D. both majority and minority carrier diode
    ✍ Discuss    
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