Which device uses stepper motors for movement? MCQ with Answer and Explanation

Which device uses stepper motors for movement?

A. CPUs

B. RAM modules

C. LED monitors

D. Dot matrix printers and scanners

Answer: Option D

Precise mechanical positioning.

This question belongs to: Computer Computer Hardware

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Question #1 Report Error

A document scanner with OCR capability helps in:

A. Audio transcription

B. Making searchable PDFs from paper

C. Printing faster

D. Gaming input

Correct Answer: Option B

Explanation:
Digital archiving.

This question belongs to: Computer Computer Hardware

Question #2 Report Error

A barcode scanner uses:

A. Ink detection

B. Laser or camera to read codes

C. Thermal sensors

D. Magnetic fields

Correct Answer: Option B

Explanation:
Optical recognition.

This question belongs to: Computer Computer Hardware

Question #3 Report Error

What is the resolution standard for Full HD monitors?

A. 3840x2160

B. 1280x720

C. 1024x768

D. 1920x1080

Correct Answer: Option D

Explanation:
Full HD is 1920x1080 pixels.

This question belongs to: Computer Computer Hardware