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MCQ Practice Question
Measurements & InstrumentationInstrument Transformers

A CT has a ratio of 200/5 A. If its secondary current is 4 A, the corresponding ideal primary current is?

  • A40 A
  • B80 A
  • C160 A
  • D200 A
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Correct Answer: C. 160 A
Explanation: The ratio is 200/5=40, so primary current=40×4=160 A.
Reference: Standard measurements and instrumentation: instrument transformers
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