What is the primary sensor in most flatbed scanners? MCQ with Answer and Explanation

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What is the primary sensor in most flatbed scanners?

A. CMOS only for phones

B. Thermal

C. Magnetic

D. CCD or CIS

Answer: Option D

Solution (By JKSSB Mock Tests)

Charge Coupled Device or Contact Image Sensor.

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

A. Feed paper

B. Store ink

C. Bond toner to paper with heat and pressure

D. Scan documents

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Correct Answer: Option C

Explanation:
In laser printers.

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Question #2

What does 'MTBF' indicate for hardware?

A. Monitor Test Benchmark Frequency

B. Memory Transfer Buffer Format

C. Maximum Thermal Buffer Factor

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Correct Answer: Option D

Explanation:
Indicates expected lifespan.

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Question #3

What is 'core voltage' in CPU context?

A. Power supply voltage to processor cores

B. Graphics voltage

C. Memory voltage

D. Monitor voltage

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Correct Answer: Option A

Explanation:
Affects stability and power.

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