The device used to convert mechanical energy into electrical energy is MCQ with Answer and Explanation

Question Report Error

The device used to convert mechanical energy into electrical energy is

A. Rectifier

B. Generator

C. Motor

D. Transformer

Answer: Option B

Solution (By JKExamLibrary)

Generator works on electromagnetic induction.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1 Report Error

The kinetic energy of a body becomes 4 times. Momentum becomes

A. Same

B. 2 times

C. 4 times

D. 16 times

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Correct Answer: Option B

Explanation:
p ∝ √K, so if K'=4K, p'=2p.

This question belongs to: Science Physics

Question #2 Report Error

In parallel circuit, which quantity is same across branches?

A. Power

B. Current

C. Voltage

D. Resistance

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Correct Answer: Option C

Explanation:
Parallel branches share same voltage (potential difference). Current divides inversely with resistance. Memory aid: 'Parallel: same voltage; Series: same current'. Fundamental circuit property frequently tested in competitive exams to assess basic electronics understanding.

This question belongs to: Science Physics

Question #3 Report Error

The frequency of a wave is 1000 Hz. Its time period is

A. 1000 s

B. 0.001 s

C. 1 s

D. 0.01 s

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Correct Answer: Option B

Explanation:
T = 1/f = 1/1000 = 0.001 s = 1 ms. Millisecond. For higher frequency, period shorter.

This question belongs to: Science Physics

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