Electrical Machines A 3- phase synchronous motor can operate over a wide range of power factors i.e. from lagging to leading power factor. This is achieved by changing the field excitation. varying the speed. changing the load. varying the applied voltage. changing the field excitation. varying the speed. changing the load. varying the applied voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 20KVA auto transformer, turn ratio is 0.8. Find the power transferred conductively? 16KVA 4KVA 0KVA 20KVA 16KVA 4KVA 0KVA 20KVA ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In one 132 / 33 kV transformer the LV resistance is 0.02 per unit. The resistance referred to HV side is 0.01 pu. 0.02 pu. 0.08 pu. 0.16 pu. 0.01 pu. 0.02 pu. 0.08 pu. 0.16 pu. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The teeth in the armature of a DC machines are sometimes skewed. This is done to reduce vibrations. hysteresis loss. eddy electric current loss. copper loss. vibrations. hysteresis loss. eddy electric current loss. copper loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC series motor is best suited for electric traction as 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. It consume less power. It develops high starting torque. It runs at very high speed at light load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, lap winding is used in high current and low voltage applications. where constant speed is required. high voltage and low current applications. where greater load is connected. high current and low voltage applications. where constant speed is required. high voltage and low current applications. where greater load is connected. ANSWER DOWNLOAD EXAMIANS APP
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