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Transients currents are maximum in the transformer when it is switched on with secondary ______ and when input voltage wave is passing through ________

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Transients currents are maximum in the transformer when it is switched on with secondary ______  and when input voltage wave is passing through ________

(a) open, zero

(b) open, peak

(c) closed, zero

(d) closed, peak

This question was addressed to me in semester exam.

My doubt is from Transformer as a Magnetically Coupled Circuit topic in portion Transformers of Electrical Machines

1 Answer

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The correct option is (a) open, zero

The explanation is: At t=0, the current flowing will be very high as emf is very high due to t = 0.

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