POWER ELECTRONICS QUIZ

A diac is simply ___________.

A single junction device

A triac without gate terminal

A three junction device

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The device that exhibits negative resistance region is ___________.

Triac

UJT

Diac

Transistor

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How can we protect SCR from thermal conditions ?

Using heat sink.

Using equalizing circuit.

Using CB and fuse.

Use of snubber circuit.

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YOUR ANSWER : ?

Which of following is not a power transistor?

SITS.

TRIAC.

COOLMOS.

IGBTs.

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YOUR ANSWER : ?

Leakage current flows through the thyristor in

forward blocking mode.

reverse blocking mode.

both forward and reverse blocking mode.

forward conduction mode.

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The UJT may be used as ___________.

A rectifier

Am amplifier

None of these

A sawtooth generator

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Which following is a two terminal three layer device?

BJT.

Power dioed.

None of above.

MOSFET.

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YOUR ANSWER : ?

A triac has ___________ semiconductor layers.

Five

Three

Four

Two

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A power MOSFET has three terminals called

Collector, emitter and gate.

Drain, source and base.

Drain, source and gate.

Collector, emitter and base.

TRUE ANSWER : ?
YOUR ANSWER : ?

A Triac has three terminals viz ___________

None of these

Two main terminal and a gate terminal

Drain, source, gate

Cathode, anode, gate

TRUE ANSWER : ?
YOUR ANSWER : ?

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