Electrical Machines In circle diagram for induction motor, diameter of circle represents which of the following ? Running torque. Rotor current. Slip. Line voltage. Running torque. Rotor current. Slip. Line voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The full load copper loss and iron loss of transformer are 6400W and 5000W respectively. The copper loss and iron loss at half load will be respectively? 3200 W and 2500 W 1600 W and 1250 W 3200 W and 5200 W 1600 W and 5000 W 3200 W and 2500 W 1600 W and 1250 W 3200 W and 5200 W 1600 W and 5000 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the phase difference between two windings of A.C servomotor ? 120°. 90°. 60°. 30°. 120°. 90°. 60°. 30°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Star - delta method of starting of motor is not possible in case of high speed motor. high torque motor. single phase induction motor. low horse power motor. high speed motor. high torque motor. single phase induction motor. low horse power motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC generator will not build up voltage if field resistance is more than critical resistance. if it has lost residual magnetism. due to wrong direction of rotation. any one of above. if field resistance is more than critical resistance. if it has lost residual magnetism. due to wrong direction of rotation. any one of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ω. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is 1.06 0.95 0.87 0.96 1.06 0.95 0.87 0.96 ANSWER DOWNLOAD EXAMIANS APP
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