Electrical Machines Maximum power developed depends on reactance both 1and 2 load angle voltage reactance both 1and 2 load angle voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer has resistance and reactance in per unit as 0.01 and 0.04 respectively. Its voltage regulation for 0.8 power factor lagging and leading will be 3.2% and -1.6% None of these 4.8% and -3.2% 6% and -4% 3.2% and -1.6% None of these 4.8% and -3.2% 6% and -4% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following rotor requires damper winding? Both type rotor. None of these Salient pole rotor. Cylindrical rotor. Both type rotor. None of these Salient pole rotor. Cylindrical rotor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slight curvature at the lower end of the OCC of a self excited DC generator is due to residual flux. high field resistance. magnetic inertia. high speed. residual flux. high field resistance. magnetic inertia. high speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC motors, under trailing pole tips, flux density will_______ ? increase decrease None of these either increase or decrease increase decrease None of these either increase or decrease ANSWER DOWNLOAD EXAMIANS APP
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 Kef2KfBm2. Kef2Kf2Bm2. Kef2Kf2Bm. KefKf2Bm2. Kef2KfBm2. Kef2Kf2Bm2. Kef2Kf2Bm. KefKf2Bm2. ANSWER DOWNLOAD EXAMIANS APP
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