What is 'power gating' in processors? MCQ with Answer and Explanation

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What is 'power gating' in processors?

A. Display control

B. Increasing voltage

C. Shutting off unused parts to save power

D. Memory management

Answer: Option C

Solution (By JKSSB Mock Tests)

Energy efficiency.

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Question #1

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Which printer technology uses electrostatic charges to print?

A. Laser Printer

B. Inkjet Printer

C. Thermal Printer

D. Dot Matrix Printer

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Correct Answer: Option A

Explanation:
Laser printers use laser and electrostatic principles.

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Question #2

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Which component is responsible for fan control in a PC?

A. Hard disk controller

B. RAM

C. CPU only

D. BIOS/UEFI

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Correct Answer: Option D

Explanation:
BIOS manages hardware including cooling.

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Question #3

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Which device is used for signature capture?

A. Electronic signature pad

B. Keyboard

C. Scanner

D. Standard mouse

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Correct Answer: Option A

Explanation:
Digital transactions.

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