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Which of the following statements regarding an idel single-phase transformer having a turn ratio of 1 : 2 and drawing a current of 10 A from 200 V A.C. supply is incorrect?

A. Its secondary current is 5 A

B. Its secondary voltage is 400 V

C. Its rating is 2 kVA

D. Its secondary current is 20 A

Answer: Option D

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Comments ( 2 )

  1. Ameer Ali
    Ameer Ali :
    2 years ago

    Given that turn ratio.....N1/N2=V1/V2=I2/I1
    =1/2(1:2)
    If V1=200 V....V2=400
    Then I1=10 A.......I2=5A

  2. Sameer Chaudhary
    Sameer Chaudhary :
    2 years ago

    N- no. Of turns / i - current
    N2/N1= i 2/ i 1
    So,
    2/1=i2/10
    20 Amp. -i2 secondary current. 20 amp.

Related Questions on Transformers

A good voltage regulation of a transformer means

A. output voltage fluctuation from no load to full load is least

B. output voltage fluctuation with power factor is least

C. difference between primary and secondary voltage is least

D. difference between primary and secondary voltage is maximum