Electrical Machines Due to magnetic saturation, the flux per pole in a DC machine without brush shift decreases in both generators and the motors with load. increases in generators but decreases in motor with load. increases in both the generators and the motors with load. decreases in generators and increases in motor with load. decreases in both generators and the motors with load. increases in generators but decreases in motor with load. increases in both the generators and the motors with load. decreases in generators and increases in motor with load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The inertia constant H of a synchronous condenser is equal to that of the effective length of the line. greater than that of hydro generator. none of these. greater than that of turbo alternator. equal to that of the effective length of the line. greater than that of hydro generator. none of these. greater than that of turbo alternator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator the emf generated by the armature is maximum when rate of change of flux is maximum. induced voltage is high. shaft rotation is high. rate of change of flux is minimum. rate of change of flux is maximum. induced voltage is high. shaft rotation is high. rate of change of flux is minimum. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Capacitor in split phase induction motor is used to start the motor. reduce the harmonics. improve the starting torque. improve the power factor. start the motor. reduce the harmonics. improve the starting torque. improve the power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The shaft torque of a dc motor is less than the electromagnetic torque because of hysteresis losses. mechanical losses. ohmic losses. eddy current losses. hysteresis losses. mechanical losses. ohmic losses. eddy current losses. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Brushes are always placed on--------------- , in order to achieve sparkles commutation? GNA None of these either GNA or MNA MNA GNA None of these either GNA or MNA MNA ANSWER DOWNLOAD EXAMIANS APP
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