SSC JE Electrical Engineering 24 Jan 2018 Evening Paper

Question : 151 of 200

Marks: +1, -0

Dur ing plugging, external r esistance is also introduced into a circuit to limit the flowing_____.

current
voltage
current and voltage both
none of these

Solution:

During Plugging Armature is Reverse connected.
Then in DC shunt motor V = – E + I

_a

I_a=({V+E}/R)

During Plugging armature current is approx two time the Rated so external Resist ance is connected in series with armature to reduce armature current.

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