Question

An electric motor operating on 15v supply draws a current of 5A and yields mechanical powers of 60 W. The energy lost as heat in one hour is:-??
give the right answer..
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Answer 1

Answer:

Input power= VI= 15×5=75watt

given that ,

output power= 60 watt

Energy loss= 75-60=15 watt

per second is 15 watt.

energy loss in 1 hour=

15×3600=54000J

= 54 KJ

Explanation:

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