Electrical Machines A short circuit test on a transformer gives copper loss at over load. copper loss at full load. copper loss at any load. copper loss at half load. copper loss at over load. copper loss at full load. copper loss at any load. copper loss at half load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 stack stepper motor has 12 teeth on stator as well as on rotor. Determine the step size when each stack excited? 45°. 30°. 10°. 24°. 45°. 30°. 10°. 24°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The brush-axis of a bipolar dc motor is rotated by 90°. The effect of this rotation on the back emf Eband the torque developed Tdwould be such that both Eb and Td are zero both Eb and Td are unchanged Eb is zero, but Td is unchanged Eb is unchanged, but Td is zero both Eb and Td are zero both Eb and Td are unchanged Eb is zero, but Td is unchanged Eb is unchanged, but Td is zero ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For high current and low current rating which winding is employed to DC machine? None of above Both lap and wave winding Wave winding Lap winding None of above Both lap and wave winding Wave winding Lap winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of IM the torque is inversely proportional to √slip. directly proportional to slip. directly proportional to slip2. inversely proportional to slip. inversely proportional to √slip. directly proportional to slip. directly proportional to slip2. inversely proportional to slip. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous motor is supplying a load at unity power factor. If the load on the motor is increased keeping its excitation and terminal voltage constant, the power factor will become lagging None of these will become leading will remain the same will become lagging None of these will become leading will remain the same ANSWER DOWNLOAD EXAMIANS APP
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