Electrical Machines A 220 V dc machine has an armature resistance of 1Ω.If the full-load current is 20 A, the differenc in the induced voltages when the machine is running as a motor and as a generator is 40 V 20 V zero 50 V 40 V 20 V zero 50 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motor operation depends on either of these. rotating magnetic field. stationary magnetic field. None of these either of these. rotating magnetic field. stationary magnetic field. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To get the speed of DC motor more than normal without wastage of electrical energy _____________ is used. none of above. any of above method. Ward Leonard control. rheostatic control. none of above. any of above method. Ward Leonard control. rheostatic control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field weakening method is also called as-----------? constant power control constant current control constant torque control constant voltage control constant power control constant current control constant torque control constant voltage control 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 0.16 pu. 0.02 pu. 0.08 pu. 0.01 pu. 0.16 pu. 0.02 pu. 0.08 pu. 0.01 pu. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The crawling in the induction motor is caused by low voltage supply high loads improper design of stator laminations harmonics developed in the motor low voltage supply high loads improper design of stator laminations harmonics developed in the motor ANSWER DOWNLOAD EXAMIANS APP
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