Solid State Devices MCQs

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Which of the item below does not mean a VARACTOR diode?

  • C. Voltage variable capacitors
  • D. Variable resistance diode
  • Correct Answer: Option D

What electronic circuit converts AC to DC where the DC output peak value can be greater than the AC input peak value?

  • A. Voltage multiplier
  • B. Rectifier
  • C. Clamper
  • D. Clipper
  • Correct Answer: Option A

A microwave diode in which the carriers that transverse the drift region are generated by minority carrier injection from a forward-biased junction instead of being extracted from the plasma of an avalanche region.

  • C. BARITT diode
  • D. Esaki diode
  • Correct Answer: Option C

A cold-cathode glow-discharge diode having a copper anode and a large cathode of sodium or other material.

  • A. Tunnel diode
  • B. BARITT diode
  • C. Anotron
  • D. READ diode
  • Correct Answer: Option C

Avalanche breakdown in a semiconductor takes place

  • A. When forward current exceeds a certain value
  • B. When potential barrier is reduced to zero
  • C. When reverse bias exceeds a certain value
  • D. When forward bias exceeds a certain value
  • Correct Answer: Option C

At absolute zero temperature, a semiconductor behaves as a/an

  • A. Good conductor
  • B. Superconductor
  • C. Insulator
  • D. Variable resistor
  • Correct Answer: Option C

What is the typical operating current of an LED?

  • A. 50 mA
  • B. 10 mA
  • C. 20 mA
  • D. 5 mA
  • Correct Answer: Option B

What device uses a material catwhisker as its anode and is classified as a hot-carrier diode?

  • A. PIN
  • B. Point-contact diode
  • C. Shockley diode
  • D. Crystal diode
  • Correct Answer: Option B

The creation voltage in a conductor or semiconductor by illumination of one surface

  • A. Dember effect
  • B. Skin effect
  • C. Destriau effect
  • D. Night effect
  • Correct Answer: Option A

An effect that occurs within the entire bulk of a semiconductor material rather than in a localized region or junction

  • A. Silicon effect
  • B. Dember effect
  • C. Bulk effect
  • D. Destriau effect
  • Correct Answer: Option C