Electrical Machines The change in speed of a DC generator due to increased load is corrected by increasing input power of the prime mover. increasing armature cooling. increasing terminal voltage. increasing armature resistance. increasing input power of the prime mover. increasing armature cooling. increasing terminal voltage. increasing armature resistance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For high current and low current rating which winding is employed to DC machine? None of above Both lap and wave winding Lap winding Wave winding None of above Both lap and wave winding Lap winding Wave winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole dc generator runs at 1500 rpm. The frequencyof current in the armature winding is 50 Hz 100 Hz 25 Hz 0 Hz 50 Hz 100 Hz 25 Hz 0 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction depends on which of the following? None of these power factor of load magnitude of load current both 1 and 2 None of these power factor of load magnitude of load current both 1 and 2 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 Ia I/Ia2 1/Ia Ia2 Ia I/Ia2 1/Ia Ia2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eb/Vt ratio of a DC motor is an indication of starting torque. efficiency. speed regulation. running torque. starting torque. efficiency. speed regulation. running torque. ANSWER DOWNLOAD EXAMIANS APP
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