The primary of 400/1 A, 10 VA, 0.8 p.f, current transformer (C.T.) carries a current of 200 A. If the secondary current is measured to be 0.495 A, then the value of percentage ratio error will be
A
−1.50%
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B
+1.50%
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C
−0.99%
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D
+0.99%
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Solution
The correct option is C−0.99% Given,
Nominal ratio,