Electronic Devices and Circuits MCQs with answers Page - 38

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A

Admin • 833.24K Points
Coach

Q. When the point moves along the load line, the voltage increases when the collector current ?

  • (A) Decreases
  • (B) Stays the same
  • (C) Increases
  • (D) Does none of the above

A

Admin • 833.24K Points
Coach

Q. BJT is ?

  • (A) Current-controlled device
  • (B) Voltage-controlled device
  • (C) Power controlled device
  • (D) None of the above

A

Admin • 833.24K Points
Coach

Q. When the collector current increases, what does the current gain do ?

  • (A) Decreases
  • (B) Stays the same
  • (C) Increases
  • (D) Any of the above

A

Admin • 833.24K Points
Coach

Q. If a transistor is operating with both of its junctions forward-biased, but with the collector base forward-bias greater than emitter-base forward-bias, then it is operating in the ?

  • (A) Forward-active mode
  • (B) Reverse saturation mode
  • (C) Reverse-active mode
  • (D) Forward-saturation mode

A

Admin • 833.24K Points
Coach

Q. If the emitter resistor is open, the collector voltage is ?

  • (A) Low
  • (B) High
  • (C) Unchanged
  • (D) Unknown

A

Admin • 833.24K Points
Coach

Q. If the base supply voltage increases the point moves ?

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

A

Admin • 833.24K Points
Coach

Q. If the collector resistor is open, the collector voltage is ?

  • (A) Low
  • (B) High
  • (C) Unchanged
  • (D) Unknown

A

Admin • 833.24K Points
Coach

Q. Alpha is the symbol of current gain for ?

  • (A) Common-base mode
  • (B) Common emitter mode
  • (C) Common-collector mode
  • (D) None of the above

A

Admin • 833.24K Points
Coach

Q. The base emitter voltage of the second approximation is ?

  • (A) 0
  • (B) 0.3 V
  • (C) 0.7 V
  • (D) 1 V

A

Admin • 833.24K Points
Coach

Q. When there is no base current in a transistor switch, the output voltage from the transistor is ?

  • (A) Low
  • (B) High
  • (C) Unchanged
  • (D) Unknown

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