A dc generator delivers 30 A at 120 V and it is driven by mechanical e – McqOptions

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1.	A dc generator delivers 30 A at 120 V and it is driven by mechanical energy at the rate of 4000 J/s determine the percentage efficiency of the generator.
A.	92%
B.	88%
C.	90%
D.	86%
Answer» D. 86%

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