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An electric generator has e.m.f. of 240 V and an internal resistance of...

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Question 29

An electric generator has e.m.f. of 240 V and an internal resistance of 1 if the current supplied by the generatoris 20A when the terminal voltage is 220 V, find the ratio of the power supplied to the power dissipated?

A

11:1

B

1:11

C

12:11

D

11:12

Explanation

Share Answer Power supplied = IE = 20 X 240 = 4800 W
Power dissipated = IV = 20 X 220 = 4400 W
(Power supplied)/Power dissipated = (4800 W)/4400 W
= (12)/11

Correct option: C

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