Regulated DC Power Supply MCQ Questions & Answers

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A Zener diode ___________

A) Is a battery B) Acts like a battery in the breakdown region C) Has a barrier potential of 1 V D) Is forward biased

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Answer & Solution

Answer: Option B

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The rupture of covalent bonds will occur when the electric field is ___________.

A) 100 V/cm B) 0.6 V/cm C) 1000 V/cm D) More than 10⁵ V/cm

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Answer & Solution

Answer: Option D

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

What is true about the breakdown voltage in a Zener diode?

A) It decreases when load current increases B) It destroys the diode C) It equals current times the resistance D) It is approximately constant

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Answer & Solution

Answer: Option D

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A Zener diode is used as a ___________ voltage regulating device

A) Shunt B) Series C) Series-shunt D) None of the above

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Answer & Solution

Answer: Option A

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A power supply which has voltage regulation of ___________ is unregulated power supply

A) 0% B) 5% C) 10% D) 8%

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Answer & Solution

Answer: Option C

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

Commercial power supplies have voltage regulation ___________

A) of 10% B) of 15% C) of 25% D) within 1%

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Answer & Solution

Answer: Option D

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If the doping level is increased, the breakdown voltage of the Zener ___________

A) Remains the same B) Is increased C) Is decreased D) None of the above

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Answer & Solution

Answer: Option C

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

Another name for Zener diode is ___________ diode

A) Breakdown B) Voltage C) Power D) Current

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Answer & Solution

Answer: Option A

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The current in a Zener diode is limited by ___________

A) External resistance B) Power dissipation C) Both (A) and (B) D) None of the above

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Answer & Solution

Answer: Option C

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The Zener current will be minimum when ___________

A) Load current is maximum B) Load current is minimum C) Load current is zero D) None of the above

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Answer & Solution

Answer: Option A

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Regulated DC Power Supply MCQ Questions & Answers | Electrical Engineering