Electrical Machines A 2 KVA transformer has iron loss of 150 W and full load copper loss of 250 W. The maximum efficiency of the transformer would occur when the total loss is 400W 250 W 300 W 500 W 400W 250 W 300 W 500 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of 3 - Φ IM, plugging means starting the motor on load which is more than the rated load. pulling the motor directly on line without a rotor. locking of rotor due to harmonics. interchanging two supply phases for quick stopping. starting the motor on load which is more than the rated load. pulling the motor directly on line without a rotor. locking of rotor due to harmonics. interchanging two supply phases for quick stopping. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Cogging and crawling are phenomena associated with the former during starting and the latter at a fraction of its rated speed. any of the above. cage induction machines and they are essentially the same. the former at a fraction of its rate speed and the latter during starting. the former during starting and the latter at a fraction of its rated speed. any of the above. cage induction machines and they are essentially the same. the former at a fraction of its rate speed and the latter during starting. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines stepped cores are used in transformers in order to reduce volume of copper. reluctance of core. iron loss. volume of iron. volume of copper. reluctance of core. iron loss. volume of iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC series motor is best suited for electric traction as It consume less power. It develops high starting torque. It runs at very high speed at light load. It is cheaper in cost. It consume less power. It develops high starting torque. It runs at very high speed at light load. It is cheaper in cost. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slight curvature at the lower end of the OCC of a self excited DC generator is due to residual flux. high field resistance. high speed. magnetic inertia. residual flux. high field resistance. high speed. magnetic inertia. ANSWER DOWNLOAD EXAMIANS APP
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