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Find the efficiency of transformer when P_{in }=100W\: \: and\: \:  Power loss=80W

Option: 1

10%


Option: 2

20%


Option: 3

30%


Option: 4

40%


Answers (1)

best_answer

As we learnt

 

practical transformer -

 

\eta % = \frac{P_{in}-P_{loses}}{P_{in}}\times 100

-

 

 =\frac{100-80}{100}*100

 =20\%

 

Posted by

Irshad Anwar

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