The primary of a _______ should never be energised when its secondary is open circuited.a)Potential transformerb)Current transformerc)Autotransformerd)Power transformerCorrect answer is option 'B'. Can you explain this answer? - EduRev Electrical Engineering (EE) Question

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The primary of a _______ should never be energised when its secondary is open circuited.

a)
Potential transformer
b)
Current transformer
c)
Autotransformer
d)
Power transformer

Correct answer is option 'B'. Can you explain this answer?

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The primary of a _______ should never be energised when its secondary ...

Current Transformer:
The secondary side of the current transformer is always kept short-circuited in order to avoid core saturation and high voltage induction so that the current transformer can be used to measure high values of currents.

The current transformer works on the principle of shorted secondary.
It means that the burden on the system Zb is equal to 0.
Thus, the current transformer produces a current in its secondary which is proportional to the current in its primary..

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The primary of a _______ should never be energised when its secondary is open circuited.a)Potential transformerb)Current transformerc)Autotransformerd)Power transformerCorrect answer is option 'B'. Can you explain this answer?

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