BPSC – Combined Competitive Examination · ప్రశ్న 26
An AC current can be produced by:
సమాధానం చూపించు & వివరణ
సమాధానం: (B) dynamo
వివరణ
A rotating coil in a magnetic field (dynamo/generator) induces alternating current.
- (A) తప్పు
Wrong: a choke limits AC; it does not generate it.
- (B) సరైనది
Correct: an AC dynamo (generator) produces alternating current by electromagnetic induction.
- (C) తప్పు
Wrong: a transformer only changes AC voltage.
- (D) తప్పు
Wrong: a dynamo produces AC.