GATE EE 1998 | Power Semiconductor Devices Question 27 | Power Electronics

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GATE EE 1998

MCQ (Single Correct Answer)

-0.3

The uncontrolled electronic switch employed in power electronic converters is

thyristor

bipolar junction transistor

Diode

MOSFET

GATE EE 1998

MCQ (Single Correct Answer)

-0.3

In a commutation circuit employed to turn off an $$SCR$$, Satisfactory turn-off is obtained when.

Circuit turn-off time
< device turn-off time

Circuit turn-off time
> device turn-off time

Circuit time constant
> device turn-off time

Circuit time constant
< device turn-off time

GATE EE 1997

MCQ (Single Correct Answer)

-0.3

If a diode is connected in anti - parallel with a thyristor, then

Both turn off power loss and turn off time decreases

Turn-off power loss decreases but turn - off -time increases

Turn-off power loss increases, but turn off time decreases

None of the above

GATE EE 1996

MCQ (Single Correct Answer)

-0.3

Which semiconductor power device out of the following is not a current triggered device?

Thyristor

$$G.T.O$$

Triac

$$MOSFET$$

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