SSC JE Electrical Engineering 2017 Set 3 Paper

Question : 189 of 200

Marks: +1, -0

Is it possible to prevent by very fast operation of the switch the switching spark produce during switching off of an indutance ?

Solution:

Spark produce during switching off an inductance can not prevent by very fast operation of switch because of higher self induced voltage

V=L{di}/{dt}

If fast operation time interval of switching is very small so voltage induce is higher.

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