Electrical Machines In electric locomotive which of the following motor are used ? DC series motor. Shunt motor. Synchronous motor. Separately compound motor. DC series motor. Shunt motor. Synchronous motor. Separately compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines As compared to an induction motor, the air gap in a DC motor is more. less than 50%. same. between 50% and 90%. more. less than 50%. same. between 50% and 90%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous motor will deliver maximum power when load angle is 45°. load angle is 0°. input power factor is unity. load angle is equal to internal angle θ. load angle is 45°. load angle is 0°. input power factor is unity. load angle is equal to internal angle θ. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole 50 Hz induction motor is running at 1470 rpm. The frequency of rotor current is 50 Hz 1 Hz 0 Hz 5 Hz 50 Hz 1 Hz 0 Hz 5 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature core of a DC machine is laminated to minimise eddy-current loss temperature rise mechanical loss hysteresis loss eddy-current loss temperature rise mechanical loss hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To eliminate 5th harmonic in the induced voltage phase breadth should be 36° 72° 30° 18° 36° 72° 30° 18° ANSWER DOWNLOAD EXAMIANS APP
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