Power Electronics MCQ Quiz

  1. The typical value of SCR for modern alternator is -
  2. A single phase full bridge inverters can operated in load commutation mode in case load consists of -
  3. Which statement is true for latching current ?
  4. Which semiconductor power device out of the following, is not a current triggering device?
  5. A triac is a -
  6. The minimum duration of the pulse in a pulse triggering system for thyristors should be at -
  7. The triple frequency of a six-phase half wave rectifier for 220 V, 60 Hz input will be -
  8. A diac has ______________ pn junctions.
  9. Between the peak point and the valley point of UJT emitter characteristics we have ___________ region.
  10. What is a TRIAC?
  11. Which one of the following statements is TRUE for an ideal power diode?
  12. For an SCR, dv/dt protection is achieved through
  13. Which one of the following statements is true?
  14. During forward blocking state, a thyristor is associated with -
Power Electronics MCQ

Take Power Electronics Quiz To test your Knowledge

Below are few Power electronics MCQ test that checks your basic knowledge of Power electronics. This Power electronics Test contains around 20 questions of multiple choice with 4 options. You have to select the right answer to a question. You can see the correct answer by clicking view answer link.

  • RLC underdamped.
  • RLC critically damped.
  • RLC underdamped.
  • RLC overdamped.
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  • It is related to conduction process of device.
  • It is related to turn off process of the device.
  • It is related to turn on process of the device.
  • None of the above
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  • 3 terminal bidirectional switch
  • 3 terminal bilateral switch
  • 2 terminal switch
  • 2 terminal bilateral switch
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  • Two thyristors connected in series mode
  • Two thyristors connected in parallel mode
  • Two thyristors connected in anti parallel mode
  • Two transistors connected in anti parallel mode
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  • Reverse recovery time is non zero and reverse saturation current is zero
  • Forward voltage drop is zero and reverse saturation current is non zero
  • Forward voltage drop is non zero and reverse recovery time is zero
  • Forward voltage drop is zero and reverse recovery time is zero
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  • RC across SCR
  • RL in series with SCR
  • L across SCR
  • L in series with SCR
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  • When avalanche break down takes place, SCRs enter into the conduction state
  • For SCRs to be in blocking state, forward anode current must be lower than the holding current
  • For SCRs to be in conduction state, forward anode current must be greater than the latching current
  • All of the above
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  • large current, low voltage
  • medium current, large voltage
  • low current, large voltage
  • low current, medium voltage
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  • Two gate terminals
  • Single gate terminal
  • Three gate terminals
  • Four gate terminals
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  • Rectifier
  • Inverter
  • Chopper
  • Switch
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  • Thyristor
  • Rectifier
  • Both 1 & 2
  • None of these
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  • two SCR’s in series
  • two SCR’s in parallel opposition
  • three SCR’s in series
  • four SCR’s in series
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