Electrical Machines If the excitation is critical, the power factor of the alternator is leading power factor. unity power factor. None of these lagging power factor. leading power factor. unity power factor. None of these lagging power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC machine, which of these parameters remain the same whether it runs as a DC motor or a DC generator? Mechanical power. Can not be determined. Armature current. Induced emf. Mechanical power. Can not be determined. Armature current. Induced emf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field weakening method is also called as-----------? constant current control constant power control constant voltage control constant torque control constant current control constant power control constant voltage control constant torque control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 6 pole DC machine, 90 mechanical degrees correspond to which of the following electrical degree? 30. 270. 45. 180. 30. 270. 45. 180. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Capacitor in split phase induction motor is used to start the motor. improve the power factor. reduce the harmonics. improve the starting torque. start the motor. improve the power factor. reduce the harmonics. improve the starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In speed control of DC shunt motor by varying field flux, what may be the value of field regulator? 10 ohm 100 ohm 2 ohm. 0.2 ohm 10 ohm 100 ohm 2 ohm. 0.2 ohm ANSWER DOWNLOAD EXAMIANS APP
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