Electrical Machines If we increase the rotor reactance value, the maximum torque will not changed None of these increase decrease not changed None of these increase decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The induction motor shaft is made of cast iron. stainless steel. mild steel. aluminium. cast iron. stainless steel. mild steel. aluminium. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole, 3-phase induction motor is running at 4% slip at full load. If the speed of the motor is 720 rpm, the supply frequency is 50 Hz 40 HZ 60 Hz 25 Hz 50 Hz 40 HZ 60 Hz 25 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the back emf in DC motor vanishes suddenly the motor will burn. run at very low speed. start haunting. run at very high speed. burn. run at very low speed. start haunting. run at very high speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To control the speed of an induction motor, the supply frequency is reduced by 10%. For the same magnetizing current to remain constant, the supply voltage must be reduced by 20% reduced by 10% increased by 20% increased by 10% reduced by 20% reduced by 10% increased by 20% increased by 10% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc machine 4 pole lap winding is used. The number of parallel paths are? 2 4 1 8 2 4 1 8 ANSWER DOWNLOAD EXAMIANS APP
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