Electronic Devices and Circuits MCQs with answers Page - 39

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A

Admin • 833.24K Points
Coach

Q. Three different Q points are shown on a load line. The upper Q point represents the ?

  • (A) Minimum current gain
  • (B) Intermediate current gain
  • (C) Maximum current gain
  • (D) Cut-off point

A

Admin • 833.24K Points
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Q. The power dissipated by a transistor approximately equals the collector current ?

  • (A) Base emitter voltage
  • (B) Collector-emitter voltage
  • (C) Base supply voltage
  • (D) 0.7. V

A

Admin • 833.24K Points
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Q. The first step in analyzing emitter-based circuits is to find the ?

  • (A) Base current
  • (B) Emitter voltage
  • (C) Emitter current
  • (D) Collector current

A

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Q. The magnitude of current Iceo ?

  • (A) Depends largely upon the emitter doping
  • (B) Depends largely upon the emitter base junction bias potential
  • (C) Increase with increase in temperature
  • (D) Is generally greater in Silicon than in Germanium transistor

A

Admin • 833.24K Points
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Q. The collector current is 10 mA. If the current gain is 100, the base current is ?

  • (A) 1 microamp
  • (B) 10 microamp
  • (C) 100 microamp
  • (D) 1 Ma

A

Admin • 833.24K Points
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Q. If the current gain is unknown in an emitter-biased circuit, you cannot calculate the ?

  • (A) Emitter voltage
  • (B) Emitter current
  • (C) Collector current
  • (D) Base current

A

Admin • 833.24K Points
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Q. If the collector resistor decreases to zero in a base-biased circuit, the load line will become ?

  • (A) Horizontal
  • (B) Vertical
  • (C) Useless
  • (D) Flat

A

Admin • 833.24K Points
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Q. If the emitter resistance decreases, the collector voltage ?

  • (A) Decreases
  • (B) Stays the same
  • (C) Increases
  • (D) Breaks down the transistor

A

Admin • 833.24K Points
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Q. In CE configuration, the input VI characteristics are drawn by taking ?

  • (A) VCE versus IC for constant value of IE
  • (B) VBE versus IC for constant value of IB
  • (C) VBE versus IB for constant value of IC
  • (D) VB versus IB for constant value of VCE

A

Admin • 833.24K Points
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Q. The collector-emitter voltage is usually ?

  • (A) Less than the collector supply voltage
  • (B) Equal to the collector supply voltage
  • (C) More than the collector supply voltage
  • (D) Cannot answer

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