Electrical Machines Consider a separately excited DC motor. If the field current is increased while the armature terminal voltage is held constant, then speed of the motor will remains same. Decrease.d none of these. increase. remains same. Decrease.d none of these. increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC Motor requires 3 point starter? Shunt, compound and series motor. Shunt motor as well as compound motors. Shunt motor. Series motor. Shunt, compound and series motor. Shunt motor as well as compound motors. Shunt motor. Series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Why are capacitors used with large AC induction motor? Improve power factor. Improve current level. Improve voltage level. Improve power level. Improve power factor. Improve current level. Improve voltage level. Improve power level. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In 3 - Φ induction motor some times copper bars are placed deep in the rotor to reduce copper loss. improve starting torque. improve power factor. improve efficiency. reduce copper loss. improve starting torque. improve power factor. improve efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase transformer the magnitude of leakage reactance is twice that of resistance of both primary and secondary. With secondary short circuited, the input power factor is 1/√2 1/√5 1/3 2/√5 1/√2 1/√5 1/3 2/√5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Alternator operates on the principle of mutual induction. self induction. electromagnetic induction. self or mutual induction. mutual induction. self induction. electromagnetic induction. self or mutual induction. ANSWER DOWNLOAD EXAMIANS APP
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