Electrical Machines What is power factor of a 3 - φ induction motor at no load? Equal to 1. High. Same as full load. Low. Equal to 1. High. Same as full load. Low. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To get the speed of DC motor is more than normal without wastage of electrical energy _____________ is used. Ward Leonard control. Rheostatic control. None of above. Any of above method. Ward Leonard control. Rheostatic control. None of above. Any of above method. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an auto transformer, for what value of turn ratio, power transferred by inductively and conductively are same? any of the above 1 0.5 0 any of the above 1 0.5 0 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is done in speed control of DC motor by field flux control? Inserting an additional resistance in the field circuit. Inserting resistance to armature circuit and field circuit. Inserting an additional resistance in the armature circuit. Any of above. Inserting an additional resistance in the field circuit. Inserting resistance to armature circuit and field circuit. Inserting an additional resistance in the armature circuit. Any of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole 50 Hz induction motor is running at 1470 rpm. The frequency of rotor current is 50 Hz 0 Hz 1 Hz 5 Hz 50 Hz 0 Hz 1 Hz 5 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine torque depends on which of the following? both A and B armature current (I) flux (φ) speed both A and B armature current (I) flux (φ) speed ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS