Some pairs of devices and associated energy changes are given below. 1. Electric generator - Mechanical to electrical 2. Electric motor - Electrical to mechanical 3. Diesel engine - Light to electrical 4. Solar cell - Chemical to mechanical. Which of the above pair/s is/are correctly matched?
(A) 1 and 2
(B) 1 and 3
(C) 2 and 4
(D) 3 and 4
Important Facts
Generators convert mechanical to electrical, motors electrical to mechanical. Diesel engines convert chemical to mechanical, and solar cells solar to electrical energy.
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