Semiconductor Diode MCQ Questions & Answers

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A crystal diode utilises ___________ characteristic for rectification

A) reverse B) forward C) forward or reverse D) none of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The ripple factor of a half-wave rectifier is ___________

A) 2 B) 1.21 C) 2.5 D) 0.48

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Answer & Solution

Answer: Option B

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The maximum efficiency of a half-wave rectifier is ___________

A) 40.6% B) 81.2% C) 50% D) 25%

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Answer & Solution

Answer: Option A

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The most widely used rectifier is ___________

A) half-wave rectifier B) centre-tap full-wave rectifier C) bridge full-wave rectifier D) none of the above

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Answer & Solution

Answer: Option C

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A zener diode has ___________

A) one pn junction B) two pn junctions C) three pn junctions D) none of the above

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Answer & Solution

Answer: Option A

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If the doping level in a crystal diode is increased, the width of depletion layer___________

A) remains the same B) is decreased C) in increased D) none of the above

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Answer & Solution

Answer: Option C

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A series resistance is connected in the zener circuit to___________

A) properly reverse bias the zener B) protect the zener C) properly forward bias the zener D) none of the above

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Answer & Solution

Answer: Option B

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The forward voltage drop across a silicon diode is about ___________

A) 2.5 V B) 3 V C) 10 V D) 0.7 V

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Answer & Solution

Answer: Option D

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The ratio of reverse resistance and forward resistance of a germanium crystal diode is about ___________

A) 1 : 1 B) 100 : 1 C) 1000 : 1 D) 40000 : 1

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Answer & Solution

Answer: Option D

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The PIV rating of a crystal diode is ___________ that of equivalent vacuum diode

A) the same as B) lower than C) more than D) none of the above

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Answer & Solution

Answer: Option B

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Semiconductor Diode MCQ Questions & Answers | Electrical Engineering