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Q.

The output voltage of a transformer connected to 220 volt line is 1100 volt at 2 amp current. Its efficiency is 100%. The current coming from the line is

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a

20 A

b

10 A

c

11 A

d

22 A

answer is B.

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Detailed Solution

For 100% efficiency  Vsis=Vpip⇒1100×2=220×ip⇒ip=10A
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