Electrical Machines When operating, two or more transformers in parallel, % impedance of these transformers should be same. proportionate to MVA rating of transformers. inversely proportional to MVA rating of transformers. such that actual impedance of all transformers would be same. same. proportionate to MVA rating of transformers. inversely proportional to MVA rating of transformers. such that actual impedance of all transformers would be same. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation is reduced, the power factor is lagging power factor unity power factor None of these leading power factor lagging power factor unity power factor None of these leading power factor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the space distribution of air-gap flux density wave at no load is flat-topped rectangular sinusoidal co- sinusoidal flat-topped rectangular sinusoidal co- sinusoidal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 1-phase induction motor, if the forward torque slip is S, what is the backward torque slip? 2-S 1/S 1-S S 2-S 1/S 1-S S ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase slip ring induction motor is wound for 4 poles on stator and 6 poles on the rotor. When 3-phase balanced voltage source at 50 Hz is applied, it will run at 1000 rpm 750rpm zero speed 1500 rpm 1000 rpm 750rpm zero speed 1500 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Resistance commutation is used generally in case of fractional kW DC machines. DC machines bellow 5 kW. None of these DC machines above 10 kW. fractional kW DC machines. DC machines bellow 5 kW. None of these DC machines above 10 kW. ANSWER DOWNLOAD EXAMIANS APP
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