DC Motors In a dc compound machine, Both play equally dominant role Either can play dominant role Shunt field winding plays dominant role Series field winding plays dominant role Both play equally dominant role Either can play dominant role Shunt field winding plays dominant role Series field winding plays dominant role ANSWER DOWNLOAD EXAMIANS APP
DC Motors Small dc motors up to 5 HP usually have 4 poles 2 poles 8 poles 6 poles 4 poles 2 poles 8 poles 6 poles ANSWER DOWNLOAD EXAMIANS APP
DC Motors A series motor will over speed when The armature circuit is opened. The load is increase Load is removed The field is opened The armature circuit is opened. The load is increase Load is removed The field is opened ANSWER DOWNLOAD EXAMIANS APP
DC Motors The mechanical power developed by a shunt motor will be maximum when the ratio of back emf to applied voltage is 1.0 0.5 2.0 4.0 1.0 0.5 2.0 4.0 ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor constant torque is produced due to Rotor laminations Pole shoes Commutator End plates Rotor laminations Pole shoes Commutator End plates ANSWER DOWNLOAD EXAMIANS APP
DC Motors Usually wide and sensitive speed control is desired in case of Elevators Steel rolling mills Centrifugal pumps Colliery winders Elevators Steel rolling mills Centrifugal pumps Colliery winders ANSWER DOWNLOAD EXAMIANS APP