Electrical Machines In a transformer which of the following losses are zero? Copper loss Rotational loss All of these Iron loss Copper loss Rotational loss All of these Iron loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the number of rotor slots is equal to number of stator slots, then motor refuses to start. Hence it is known as cogging. air gap. relative speed. crawling. cogging. air gap. relative speed. crawling. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods of speed control is not affected through stator side? Change of rotor resistance. Change of supply voltage. Change of supply frequency. Change of number of pole. Change of rotor resistance. Change of supply voltage. Change of supply frequency. Change of number of pole. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Where the shunt generators are widely used? Where a constant voltage is required over a narrow load range. Where often load fluctuation is occurred. Where the load is very high. Where voltage variation is needed over a wide load range. Where a constant voltage is required over a narrow load range. Where often load fluctuation is occurred. Where the load is very high. Where voltage variation is needed over a wide load range. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following starter is sufficient to start the DC series motor ? 2 point starter All of these 4 point starter 3 point starter 2 point starter All of these 4 point starter 3 point starter ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following DC Motor the ratio of starting torque to full load torque is minimum? Cumulative compound motor. Shunt motor. Differential compound motor. Series motor. Cumulative compound motor. Shunt motor. Differential compound motor. Series motor. ANSWER DOWNLOAD EXAMIANS APP
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