Microwave Solid-state Devices MCQ

Microwave Solid-state Devices MCQ

Microwave Solid-state Devices MCQ, Multiple Choice Questions on Microwave Solid-state Devices, Microwave Engineering MCQ, Electronics MCQ, Engineering MCQ,

Objective Questions on Microwave Tubes


Q.1. If the phase difference between voltage and current in a device is 180°, such a device is called

  • an inductor
  • a capacitor
  • a positive resistance device
  • a negative resistance device

Answer: a negative resistance device

Q.2. Which of the following is a TED?

  • GUNN diode

Answer: GUNN diode

Q.3. Which of the following is a unipolar device?

  • SCHOTTKY diode
  • PN diode
  • PIN diode
  • Varactor diode

Answer: SCHOTTKY diode

Q.4. The natural frequency of a GUNN diode, having an active length of 2 micrometers and an electron drift velocity of 105 m/sec, is

  • 10 GHz
  • 20 GHz
  • 50 GHz
  • 1 GHz

Answer: 50 GHz

Q.5. The operating frequency of an IMPATT diode that has a drift length of 5 micrometers is

  • 10 GHz
  • 20 GHz
  • 50 GHz
  • 1 GHz

Answer: 20 GHz

Q.6. Which of the following diodes has a high impurity ion concentration?

  • PN
  • tunnel diode
  • SCHOTTKY diode
  • IMPATT diode

Answer: tunnel diode

Q.7. In a parametric amplifier, if the output frequency is the difference between signal frequency and pump frequency, it is called

  • upconverter
  • degenerate amplifier
  • downconverter
  • none of the above


Q.8. Which of the following has a metal-semiconductor junction?

  • crystal diode
  • Schottky diode
  • step-recovery diode
  • crystal diode & Schottky diode

Answer: crystal diode & Schottky diode

Q.9. The semiconductor diode which can be used in switching circuits at microwave range is

  • PIN Diode
  • Varactor Diode
  • Tunnel Diode
  • Gunn Diode

Answer: PIN Diode

Q.10. Which one of the following is a transferred electron device?

  • BARITT Diode
  • IMPATT Diode
  • Gunn Diode
  • Step Recovery Diode

Answer: Gunn Diode


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