Electrical Machines A short circuit test on a transformer gives copper loss at over load. copper loss at half load. copper loss at any load. copper loss at full load. copper loss at over load. copper loss at half load. copper loss at any load. copper loss at full load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Synchronous reactance of an alternator represents armature reactance and leakage reactance field winding reactance a reactance operating at synchronous speed All of these armature reactance and leakage reactance field winding reactance a reactance operating at synchronous speed All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flashing the field of DC generator means neutralising residual magnetism. making the magnetic losses forces parallel. increasing flux density by adding extra turns of winding. creating residual magnetism by a DC source. neutralising residual magnetism. making the magnetic losses forces parallel. increasing flux density by adding extra turns of winding. creating residual magnetism by a DC source. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole 50 Hz induction motor is running at 1470 rpm. The frequency of rotor current is 5 Hz 0 Hz 50 Hz 1 Hz 5 Hz 0 Hz 50 Hz 1 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor drawing an armature current of Ia is operating under saturated magnetic conditions. The torque developed in the motor is proportional to Ia2 Ia I/Ia2 1/Ia Ia2 Ia I/Ia2 1/Ia 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 increase gradually. The speed will increase in proportion to reduction in load. The speed will increase abruptly. The speed will remains almost constant. The speed will increase gradually. The speed will increase in proportion to reduction in load. The speed will increase abruptly. The speed will remains almost constant. ANSWER DOWNLOAD EXAMIANS APP
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