Electronic Devices and Circuits MCQs with answers Page - 40

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A

Admin • 833.24K Points
Coach

Q. When the base resistor decreases, the collector voltage will probably ?

  • (A) Decrease
  • (B) Stay the same
  • (C) Increase
  • (D) all of the above

A

Admin • 833.24K Points
Coach

Q. If the base supply voltage is disconnected, the collector emitter voltage will equal ?

  • (A) 0 V
  • (B) 6 V
  • (C) 10.5 V
  • (D) Collector supply voltage

A

Admin • 833.24K Points
Coach

Q. Ignoring the bulk resistance of the collector diode, the collector-emitter saturation voltage is ?

  • (A) 0
  • (B) A few tenths of a volt
  • (C) 1 V
  • (D) Supply voltage

A

Admin • 833.24K Points
Coach

Q. Suppose the base resistor is open. The Q point will be ?

  • (A) In the middle of the load line
  • (B) At the upper end of the load line
  • (C) At the lower end of the load line
  • (D) off the load line

A

Admin • 833.24K Points
Coach

Q. If a transistor operates at the middle of the load line, an increase in the current gain will move the Q point ?

  • (A) Down
  • (B) Up
  • (C) Nowhere
  • (D) off the load line

A

Admin • 833.24K Points
Coach

Q. If the base resistor is shorted, the transistor will probably be ?

  • (A) Saturated
  • (B) In cut-off
  • (C) Destroyed
  • (D) None of the above

A

Admin • 833.24K Points
Coach

Q. A circuit with a fixed emitter current is called ?

  • (A) Base bias
  • (B) Emitter bias
  • (C) Transistor bias
  • (D) Two-supply bias

A

Admin • 833.24K Points
Coach

Q. In CE mode of transistor, the most noticeable effect of a small increase in temperature is ?

  • (A) The increase in output resistance
  • (B) The increase in leakage current Iceo
  • (C) The decrease in AC current gain
  • (D) Increase in AC current gain

A

Admin • 833.24K Points
Coach

Q. A small collector current with zero base current is caused by the leakage current of the ?

  • (A) Emitter diode
  • (B) Collector diode
  • (C) Base diode
  • (D) Transistor

A

Admin • 833.24K Points
Coach

Q. In CE configuration, output v-i characteristics are drawn by taking ?

  • (A) VCE versus IC for constant value of IE
  • (B) VCE versus IC for constant value of IB
  • (C) VCE versus IE for constant value of VCB
  • (D) none of these

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