Electrical Machines Armature resistance control method is used for the _______ ? both 1 and 2 None of these above rated speed below rated speed both 1 and 2 None of these above rated speed below rated speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The application that need frequent starting and stopping is lifts and hoists. paper mills. jaw crushers. blowers. lifts and hoists. paper mills. jaw crushers. blowers. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator the actual flux distribution depends upon size of air gap. all of above. clearance between tips of the adjacent pole shoes. shape of the pole shoe. size of air gap. all of above. clearance between tips of the adjacent pole shoes. shape of the pole shoe. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A voltmeter gives 120 oscillations per minute when connected to the rotor of an induction motor. The frequency is 50Hz. The slip of the motor is 5% 4% 2% 25% 5% 4% 2% 25% 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 increased by 20% reduced by 20% reduced by 10% increased by 10% increased by 20% reduced by 20% reduced by 10% increased by 10% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Capacitor fitted with ceiling / table fans is of the value of 0.1 µF. 2 - 3 µF. 5 - 10 F. 1 - 2 µF. 0.1 µF. 2 - 3 µF. 5 - 10 F. 1 - 2 µF. ANSWER DOWNLOAD EXAMIANS APP
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