Electrical Machines Voltage across the open circuited field termninals of a synchorous machine under slip test is DC. AC of supply frequency. DC of slip frequency. A modulated supply frequency AC voltage with slip frequency envelop. DC. AC of supply frequency. DC of slip frequency. A modulated supply frequency AC voltage with slip frequency envelop. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For high current and low voltage rating which winding is employed to DC machine? Wave winding. Both wave and lap winding. No wave and lap winding. Lap winding. Wave winding. Both wave and lap winding. No wave and lap winding. Lap winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In circle diagram for induction motor, diameter of circle represents which of the following ? Line voltage. Rotor current. Running torque. Slip. Line voltage. Rotor current. Running torque. Slip. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If in a sub – station there is one 132 / 33 kV transformer whose secondary is connected with primary of one 33 / 11 kV transformer, the total transformation ratio of the sub – station will be, 12. 7. 4. 3. 12. 7. 4. 3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor especially the cage rotors slots are nearly parallel to shaft axis. This is called cogging. slip. skewing. crawling. cogging. slip. skewing. crawling. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are the methods to reduce the armature reaction and its effects? All of these pole chamfering pole stacking compensating winding All of these pole chamfering pole stacking compensating winding ANSWER DOWNLOAD EXAMIANS APP
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