Electro Magnetic Induction And Alternating Currents Question 218

Question: A step up transformer operates on a 230 V line and supplies a current of 2 ampere. The ratio of primary and secondary winding is 1:25. The current in primary is

Options:

A) 25 A

B) 50 A

C) 15 A

D) 12.5 A

Show Answer

Answer:

Correct Answer: B

Solution:

  • npns=EpEs=125
    Es=25Ep

    But EsIs=EpIpES×ISEpIp=50A



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