State PCS PYQPrelims 2025

BPSC – Combined Competitive Examination · Question 130

Which device protects equipment from electrical damage due to excess current?

  1. Fuse
  2. Generator
  3. Motor
  4. Current controller
Show answer & explanation

Answer: (A) Fuse

Explanation

A fuse is a safety device with a low-melting wire that cuts off excess current.

  • (A) Correct

    Correct: a fuse melts and breaks the circuit when current exceeds a safe limit.

  • (B) Incorrect

    Wrong: a generator produces electricity.

  • (C) Incorrect

    Wrong: a motor converts electrical to mechanical energy.

  • (D) Incorrect

    Wrong: not the standard safety device.