Electrical Machines Under operating conditions the rotor conductor should be _________________ in induction motor. always opened. semi closed or semi opened. always closed. none. always opened. semi closed or semi opened. always closed. none. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed? The speed will remains almost constant. The speed will increase in proportion to reduction in load. The speed will increase gradually. The speed will increase abruptly. The speed will remains almost constant. The speed will increase in proportion to reduction in load. The speed will increase gradually. The speed will increase abruptly. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For high current and low current rating which winding is employed to DC machine? Both lap and wave winding Wave winding None of above Lap winding Both lap and wave winding Wave winding None of above Lap winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A large series motor is never started without some mechanical load on it because otherwise it will draw too much current. open fuse or circuit breaker. produce sparking at brushes. develop excessive speed and damage itself. draw too much current. open fuse or circuit breaker. produce sparking at brushes. develop excessive speed and damage itself. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When excitation is increased (over excitation), the synchronous generator operates at any of the above. leading power factor. unity power factor. lagging power factor. any of the above. leading power factor. unity power factor. lagging power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Universal motor have which of the following application? Lift. Traction. Food mixer. Domestic pump. Lift. Traction. Food mixer. Domestic pump. ANSWER DOWNLOAD EXAMIANS APP
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