Electrical Machines Hopkinss test in DC motor is conducted at ? No load. None of these. Low load. Full load. No load. None of these. Low load. Full load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the eddy current loss if the supply frequency of a transformer becomes double? Four times. Doubled. Remains same. Eight times. Four times. Doubled. Remains same. Eight times. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an auto-transformer, power is transferred through None of these induction process only. both A and B. conduction process only. None of these induction process only. both A and B. conduction process only. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator sparking between brushes and commutator surface may be due to over commutation. too rapid reversal of current. under commutation. any of the above. over commutation. too rapid reversal of current. under commutation. any of the above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors has low ratings only? Shaded pole Resistance split phase Capacitor run Capacitor start Shaded pole Resistance split phase Capacitor run Capacitor start ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines As compared to DOL starting, a cage induction motor with star-delta starting shall have more starting time. more starting torque. reduced starting current. smoother acceleration. more starting time. more starting torque. reduced starting current. smoother acceleration. ANSWER DOWNLOAD EXAMIANS APP
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