Electrical Machines If Ke is eddy current constant, Kf is form factor, f is supply frequency, Bm maximum flux density in core of transformer, the expression of eddy current loss in transformer, is given by Kef2Kf2Bm. Kef2Kf2Bm2. Kef2KfBm2. KefKf2Bm2. Kef2Kf2Bm. Kef2Kf2Bm2. Kef2KfBm2. KefKf2Bm2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors. Calculate the back emf produced when it is running at a speed of 1500 rpm. 230 volt. 440 volt. 240 volt. 220 volt. 230 volt. 440 volt. 240 volt. 220 volt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field weakening method is also called as-----------? constant torque control constant current control constant power control constant voltage control constant torque control constant current control constant power control constant voltage control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The stator frame in an induction motor is used to hold armature stamping in position. protect the whole machine. provide return path for the flux. ventilate the armature. hold armature stamping in position. protect the whole machine. provide return path for the flux. ventilate the armature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Essential conditions for two DC generators are connecting for parallel operation is/are rating of generators should be same. both A and B. polarities should be same. terminal voltage should be same. rating of generators should be same. both A and B. polarities should be same. terminal voltage should be same. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following voltage regulation method is accurate ? Synchronous impedance method MMf method American standard association method ZPF method Synchronous impedance method MMf method American standard association method ZPF method ANSWER DOWNLOAD EXAMIANS APP
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