Electrical Machines An unexcited single phase synchronous motor is AC series motor. universal motor. reluctance motor. repulsion motor. AC series motor. universal motor. reluctance motor. repulsion motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC motors has almost constant speed over their full load range? Shunt. Series. none of these. Compound (cummolative). Shunt. Series. none of these. Compound (cummolative). ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the residual magnetism is of the order of 15 %. 2.5 %. 10 %. 20 %. 15 %. 2.5 %. 10 %. 20 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In shapers and slotters which motor are preferred? Slip ring IM. Double cage motor. Synchronous motor. Squirrel cage IM. Slip ring IM. Double cage motor. Synchronous motor. Squirrel cage IM. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An ideal synchronous motor has no starting torque because relative velocity between the stator and rotor mmf’s is zero. rotor is made up of salient poles. rotor winding is highly reactive. relative velocity between stator and rotor mmf’s is not zero. relative velocity between the stator and rotor mmf’s is zero. rotor is made up of salient poles. rotor winding is highly reactive. relative velocity between stator and rotor mmf’s is not zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, which component plays the vital role to produce the direct current? Commutator. Yoke. Brush. Armature. Commutator. Yoke. Brush. Armature. ANSWER DOWNLOAD EXAMIANS APP
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