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All India SSC JE 2017 Electrical Engineering - Quiz 9
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Question 1
In a dc machine running with a heavy load, and with the brushes located on the geometrical neutral axis sparking occurs
at the brushes during commutation, because of
at the brushes during commutation, because of
Question 2
A separately excited dc generator is feeding a dc shunt motor. If the load torque on the motor is reduced to half, then
Question 3
A triangular mmf wave is produced in the air-gap of an electric machine. Such a wave is produced by
Question 4
Assuming a uniform distribution of current over the armature surface conductors, the shape of the resultant armature m.m.f, in space of a loaded dc machine is a symmetrical.
Question 5
In a transformer, zero voltage regulation at full load is possible :
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