Electrical Machines Open circuit test on transformer gives copper loss hysteresis loss eddy current loss both 1and 2 copper loss hysteresis loss eddy current loss both 1and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following starter is sufficient to start the DC series motor ? 3 point starter All of these 2 point starter 4 point starter 3 point starter All of these 2 point starter 4 point starter ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole dc generator runs at 1500 rpm. The frequencyof current in the armature winding is 50 Hz 0 Hz 25 Hz 100 Hz 50 Hz 0 Hz 25 Hz 100 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Breather is provided in a transformer to provide cold air in transformer. filter the transformer oil. absorb moisture of air during breathing. absorb moisture from air entering in transformer. provide cold air in transformer. filter the transformer oil. absorb moisture of air during breathing. absorb moisture from air entering in transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC shunt motor if load is increased, the speed increased slightly. remains constant. reduce slightly. increase proportional. increased slightly. remains constant. reduce slightly. increase proportional. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The mechanical power is developed by a DC motor is maximum when back emf is equal to twice of applied voltage. back emf is equal to applied voltage. back emf is equal to half of applied voltage. none of above. back emf is equal to twice of applied voltage. back emf is equal to applied voltage. back emf is equal to half of applied voltage. none of above. ANSWER DOWNLOAD EXAMIANS APP
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