Which communication device converts sound into electrical signals? MCQ with Answer and Explanation

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Which communication device converts sound into electrical signals?

A. Satellite

B. Telegraph

C. Radio

D. Telephone

Answer: Option D

Solution (By JKSSB Mock Tests)

A telephone converts sound waves into electrical signals for transmission.

This question belongs to: Geography GK Transport and Communication

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Question #1

Which railway division is famous for operating the Nilgiri Mountain Railway?

A. Palakkad Division

B. Salem Division

C. Tiruchirappalli Division

D. Madurai Division

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Correct Answer: Option B

Explanation:
The Nilgiri Mountain Railway is operated under the Salem Division of Southern Railway.

This question belongs to: Geography GK Transport and Communication

Question #2

Which transport mode is most suitable for international trade in bulky goods?

A. Railways

B. Airways

C. Waterways

D. Roadways

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Correct Answer: Option C

Explanation:
Maritime transport is the most economical mode for international movement of bulky goods.

This question belongs to: Geography GK Transport and Communication

Question #3

Which port handles crude oil imports in India?

A. All of the above

B. Kandla Port

C. Mumbai Port

D. Paradip Port

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Correct Answer: Option A

Explanation:
Multiple Indian ports including Mumbai, Kandla, and Paradip handle crude oil imports.

This question belongs to: Geography GK Transport and Communication

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