Semiconductor Diode Multiple - EEE Questions and Answers

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A zener diode is always ___________ connected.

A.

reverse

B.

forward

C.

either reverse or forward

D.

none of the above

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A crystal diode is a ___________ device

A.

non-linear

B.

bilateral

C.

linear

D.

none of the above

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A crystal diode has

A.

one pn junction

B.

two pn junctions

C.

three pn junctions

D.

none of the above

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A 10 V power supply would use ___________ as filter capacitor.

A.

paper capacitor

B.

mica capacitor

C.

electrolytic capacitor

D.

air capacitor

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If the a.c. input to a half-wave rectifier is an r.m.s value of 400/√2 volts, then diode PIV rating is ___________

A.

400/√2 V

B.

400 V

C.

400 x √2 V

D.

none of the above

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When a crystal diode is used as a rectifier, the most important consideration is ___________

A.

forward characteristic

B.

doping level

C.

reverse characteristic

D.

PIC rating

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The PIV rating of each diode in a bridge rectifier is ___________ that of the equivalent centre-tap rectifier

A.

one-half

B.

the same as

C.

twice

D.

four times

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When the graph between current through and voltage across a device is a straight line, the device is referred to as ___________

A.

linear

B.

active

C.

nonlinear

D.

passive

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The knee voltage of a crystal diode is approximately equal to ___________

A.

applied voltage

B.

breakdown voltage

C.

forward voltage

D.

barrier potential