Electrical Machines Which of the following motors has low ratings only? Capacitor start Resistance split phase Capacitor run Shaded pole Capacitor start Resistance split phase Capacitor run Shaded pole ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A small air gap in poly phase induction motor helps to reduce chance of cogging. reduce magnetizing current. reduce chance of crawling. increase starting torque. reduce chance of cogging. reduce magnetizing current. reduce chance of crawling. increase starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine torque depends on which of the following? flux (φ) both A and B armature current (I) speed flux (φ) both A and B armature current (I) speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole 50 Hz 1-phase induction motor is running at 1470 rpm. Find the forward and backward slips? 0.04, 1.96 0.04, 0.96 0.02, 0.98 0.02, 1.98 0.04, 1.96 0.04, 0.96 0.02, 0.98 0.02, 1.98 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 230 V dc series generator is driven at its rated speed. The no-load voltage across its armature terminals would be 230 V 6 V somewhat more than 230 V somewhat less than 230 V 230 V 6 V somewhat more than 230 V somewhat less than 230 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase transformer the magnitude of leakage reactance is twice that of resistance of both primary and secondary. With secondary short circuited, the input power factor is 2/√5 1/√2 1/3 1/√5 2/√5 1/√2 1/3 1/√5 ANSWER DOWNLOAD EXAMIANS APP
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