Electrical Machines In a transformer the magnetic coupling between the primary and secondary winding can be increased by using the magnetic core of low reluctance. increasing the number of turns. using soft material for winding. using transformer oil of better quality. using the magnetic core of low reluctance. increasing the number of turns. using soft material for winding. using transformer oil of better quality. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field current is reduced to zero the maximum power developed by alternator is 2.73 KW. 0.9103 KW. 5.46 KW. 1.644 KW. 2.73 KW. 0.9103 KW. 5.46 KW. 1.644 KW. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In synchronous motor the torque is proportional to P² 1/P 1/P² Power P P² 1/P 1/P² Power P ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator sparking between brushes and commutator surface may be due to over commutation. any of the above. too rapid reversal of current. under commutation. over commutation. any of the above. too rapid reversal of current. under commutation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines, the interpoles are provided both (B) and (C). to counteract demagnetizing effect of armature mmf in commutating zone. to make commutation spark less. to counteract the reactance voltage and the cross-magnetizi both (B) and (C). to counteract demagnetizing effect of armature mmf in commutating zone. to make commutation spark less. to counteract the reactance voltage and the cross-magnetizi ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a dc machine shunt resistance and armature resistance values are high and high high and low low and high low and low high and high high and low low and high low and low ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS