Electrical Machines A 3-phase, alternator has generated emf per phase of 230 V with 10% 3rd harmonic and 6% 5th harmonic content. Calculate rms line voltage for star connection. 100 V. 230.2 V. 50 V. 399 V. 100 V. 230.2 V. 50 V. 399 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field weakening method is also called as-----------? constant current control constant torque control constant power control constant voltage control constant current control constant torque control constant power control constant voltage control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the rotating losses of machine? All of the them Eddy current losses Friction and windage losses Hysteresis losses All of the them Eddy current losses Friction and windage losses Hysteresis losses ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hunting in a synchronous motor takes place motor is under loaded. when power factor is unity. when supply voltage fluctuates. when load varies. motor is under loaded. when power factor is unity. when supply voltage fluctuates. when load varies. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In star-delta starting of squirrel cage induction motor compared to DOL starting the starting current and torque are 1/3, 1/3 1/√3, 1/√3 1/3, 1/√3 1/√3, 1/3 1/3, 1/3 1/√3, 1/√3 1/3, 1/√3 1/√3, 1/3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An electric motor with constant output power will have a torque speed characteristics in the form of a Straight line parallel to the speed axis. Straight line through the origin. Rectangular hyperbola Circle about the origin. Straight line parallel to the speed axis. Straight line through the origin. Rectangular hyperbola Circle about the origin. ANSWER DOWNLOAD EXAMIANS APP
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