Electrical Machines The speed of a 50 Hz three phase induction motor under full load condition is 725 rpm the number of poles of the motor are ______________. 6. 2. 4. 8. 6. 2. 4. 8. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward Leonard control is provides speed control In one direction only. Above rated speed. Below rated speed. In both direction. In one direction only. Above rated speed. Below rated speed. In both direction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eb/V ratio of a DC motor is an indication of Speed regulation. Running Torque. Starting torque. Effiency. Speed regulation. Running Torque. Starting torque. Effiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What happens if fifth multiples of harmonics is given to induction motor? It will rotates in reverse direction. Fail to start. Either short circuit or open circuit occurs. It will rotates in normal operation. It will rotates in reverse direction. Fail to start. Either short circuit or open circuit occurs. It will rotates in normal operation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A shunt generator is running at 1000 rpm. If flux is reduced by half, then what is the new speed? 2000. 500. 0. 1000. 2000. 500. 0. 1000. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In escalator which motor is used? DC shunt motor. Universal motor. 3 - φ IM. 1 - φ IM. DC shunt motor. Universal motor. 3 - φ IM. 1 - φ IM. ANSWER DOWNLOAD EXAMIANS APP
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