Electrical Machines In synchronous motor, the damper winding is generally used to reduce the eddy currents. reduce noise level only. provide starting torque only. prevent hunting and provide the starting torque. reduce the eddy currents. reduce noise level only. provide starting torque only. prevent hunting and provide the starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The voltmeter connected across a generator reads voltage same at no load and at full load (rated). The generator is of the type series generator. level compound. short - shunt generator. shunt generator. series generator. level compound. short - shunt generator. shunt generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Due to magnetic saturation, the flux per pole in a DC machine without brush shift decreases in generators and increases in motor with load. increases in generators but decreases in motor with load. increases in both the generators and the motors with load. decreases in both generators and the motors with load. decreases in generators and increases in motor with load. increases in generators but decreases in motor with load. increases in both the generators and the motors with load. decreases in both generators and the motors with load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load test on induction motor is conducted to find which of the following losses? Stator core loss Stator copper loss All of these Rotational loss Stator core loss Stator copper loss All of these Rotational loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer maximum flux density is not constant, the eddy current loss varies as V² V f f² V² V f f² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer has maximum efficiency at 3/4 load. The ratio of iron loss and full load copper loss is 4/3. 9/16. 16/9. 3/4. 4/3. 9/16. 16/9. 3/4. ANSWER DOWNLOAD EXAMIANS APP
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