What causes coil whine in hardware? MCQ with Answer and Explanation

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What causes coil whine in hardware?

A. Printer motor

B. Keyboard switches

C. Vibrations in inductors under load

D. Monitor issue

Answer: Option C

Solution (By JKSSB Mock Tests)

Common in GPUs/PSUs.

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Question #1

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What is the purpose of a printer's fuser unit?

A. Scan documents

B. Store ink

C. Feed paper

D. Bond toner to paper with heat and pressure

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Correct Answer: Option D

Explanation:
In laser printers.

This question belongs to: Computer Computer Hardware

Question #2

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What does 'bus width' determine?

A. Display resolution

B. Clock speed

C. Storage capacity

D. Amount of data transferred simultaneously

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Correct Answer: Option D

Explanation:
E.g., 64-bit data bus.

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Question #3

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The brain of the computer is:

A. CPU

B. Keyboard

C. Monitor

D. Hard Disk

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Correct Answer: Option A

Explanation:
CPU processes all instructions.

This question belongs to: Computer Computer Hardware

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