Q.

A dynamo is a device which –

A. creates mechanical energy
B. creates electrical energy
C. converts mechanical energy into electrical energy
D. converts electrical energy into mechanical energy
Answer» C. converts mechanical energy into electrical energy
Explanation: A dynamo is an electrical generator that produces direct current with the use of a commutator. Dynamos were the first electrical generators capable of delivering power for industry, and the foundation upon which many other later electric-power conversion devices were based, including the electric motor, the alternating-current alternator, and the rotary converter.
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