Electrical Machines In dc machines, the space distribution of air-gap flux density wave at no load is flat-topped co- sinusoidal rectangular sinusoidal flat-topped co- sinusoidal rectangular sinusoidal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For 250 volt DC Shunt Motor the armature and field resistance are 0.5 ohm and 250 ohm respectively. What will be the back e.m.f. produced when it takes a load current of 21A. 150 V. 240 V. 220 V. 280 V. 150 V. 240 V. 220 V. 280 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load test of 3-phase induction motor gives which of the following? variable loss both A and B None of these constant loss variable loss both A and B None of these constant loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the pitch factor? Cos α² sin (α/2) Cos (α/2) Cos α Cos α² sin (α/2) Cos (α/2) Cos α ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hysteresis loop represents the area of eddy current loss hysteresis loss total iron losses copper loss eddy current loss hysteresis loss total iron losses copper loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer cooling and insulating oil must be of low resistivity. low BDV. low viscosity. high viscosity. low resistivity. low BDV. low viscosity. high viscosity. ANSWER DOWNLOAD EXAMIANS APP
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