Electrical Machines In a transformer operating at constant voltage if the input frequency increases, the core loss remains constant. None of these increase. decrease. remains constant. None of these increase. decrease. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an auto transformer, for what value of turn ratio, power transferred by inductively and conductively are same? 0 1 any of the above 0.5 0 1 any of the above 0.5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In Ward-Leonard method of speed control, the direction of rotation of motor is reversed usually reversing the connection of the generator field terminal. motor field terminal. motor armature terminal. generator armature terminal. generator field terminal. motor field terminal. motor armature terminal. generator armature terminal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hysteresis loss will depends on f1.6 f³ f f² f1.6 f³ f f² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Synchronous reactance of an alternator represents armature reactance and leakage reactance field winding reactance All of these a reactance operating at synchronous speed armature reactance and leakage reactance field winding reactance All of these a reactance operating at synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is done in speed control of DC motor by field flux control? Inserting resistance to armature circuit and field circuit. Inserting an additional resistance in the field circuit. Inserting an additional resistance in the armature circuit. Any of above. Inserting resistance to armature circuit and field circuit. Inserting an additional resistance in the field circuit. Inserting an additional resistance in the armature circuit. Any of above. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS