NextMockSearch exams, e.g. SSC CGL, UPPSC, Lekhpal
हिंदी
State PCS PYQPrelims 2023

BPSC – Combined Competitive Examination · Question 26

An AC current can be produced by:

  1. choke coil
  2. dynamo
  3. transformer
  4. None of the above
Show answer & explanation

Answer: (B) dynamo

Explanation

A rotating coil in a magnetic field (dynamo/generator) induces alternating current.

  • (A) Incorrect

    Wrong: a choke limits AC; it does not generate it.

  • (B) Correct

    Correct: an AC dynamo (generator) produces alternating current by electromagnetic induction.

  • (C) Incorrect

    Wrong: a transformer only changes AC voltage.

  • (D) Incorrect

    Wrong: a dynamo produces AC.