Electrical Machines The principal of starting of 3 - Φ IM is similar to capacitor run IM. transformer with short-circuited secondary. repulsion motor type starting. synchronous motor. capacitor run IM. transformer with short-circuited secondary. repulsion motor type starting. synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? 1-S 1/(1-S) S 1/S 1-S 1/(1-S) S 1/S ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous motor is supplying a load at unity power factor. If the load on the motor is increased keeping its excitation and terminal voltage constant, the power factor None of these will become lagging will become leading will remain the same None of these will become lagging will become leading will remain the same ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward Leonard control provides speed control above rated speed. below rated speed. in one direction only. in both direction. above rated speed. below rated speed. in one direction only. in both direction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc machine 4 pole lap winding is used. The number of parallel paths are? 8 2 1 4 8 2 1 4 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole DC generator runs at 1500 rpm. The frequency of current in the armature winding is: Zero Hz. 100 Hz. 50 Hz. 25 Hz. Zero Hz. 100 Hz. 50 Hz. 25 Hz. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS