Electrical Machines If the applied voltage to a dc machine is 230 V, then the back emf, for maximum power developed, is 200 V 460 V 115 V 230 V 200 V 460 V 115 V 230 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The damper windings also called the squirrel cage windings or damper grids are provided on the stator for improving power factor. consists of short-circuited copper bars embedded in the field pole faces. are provided in a synchronous motor to make it self starting. both (A) and (B). are provided on the stator for improving power factor. consists of short-circuited copper bars embedded in the field pole faces. are provided in a synchronous motor to make it self starting. both (A) and (B). ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The primary and secondary windings of a transformer are mechanically linked. electrically linked. conductively linked. inductively linked. mechanically linked. electrically linked. conductively linked. inductively linked. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following machine is invariably provided with forced ventilation? Fractional horse power high speed motor. Hermetically sealed motor of refrigerator. 50 MW generator in a power plant. Fractional horse power slow speed motor. Fractional horse power high speed motor. Hermetically sealed motor of refrigerator. 50 MW generator in a power plant. Fractional horse power slow speed motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For successful parallel operation of two single phase transformers, the most essential condition is that their polarities are properly connected turn- ratios are exactly equal KVA ratings are equal percentage impedances are equal polarities are properly connected turn- ratios are exactly equal KVA ratings are equal percentage impedances are equal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When maximum starting torque is obtained, rotor power is ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS