A transformer is employed to reduce 220 V to 11 V. The primary draws a – McqOptions

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1.	A transformer is employed to reduce 220 V to 11 V. The primary draws a current of 5 A and the secondary 90 A. The efficiency of the transformer is [MP PMT 1992, 2001, 04]
A.	20%
B.	40%
C.	70%
D.	90%
Answer» E.

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