Electrical Machines In dc machines, the space distribution of air-gap flux density wave at no load is co- sinusoidal sinusoidal flat-topped rectangular co- sinusoidal sinusoidal flat-topped rectangular ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt generator, when commissioned after a major repair of the field system, failed to build Up voltage. It was because field resistance was higher than critical resistance field system lost residual magnetism there was a break in the armature circuit field winding was wrongly connected field resistance was higher than critical resistance field system lost residual magnetism there was a break in the armature circuit field winding was wrongly connected ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motor operation depends on rotating magnetic field. stationary magnetic field. None of these either of these. rotating magnetic field. stationary magnetic field. None of these either of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation is critical, the power factor of the alternator is lagging power factor. None of these unity power factor. leading power factor. lagging power factor. None of these unity power factor. leading power factor. 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 with armature resistance of 0.6 ohm. Calculate the starting current flowing through the armature if the supply voltage is 240 volt. 800 Amp. 320 Amp. 400 Amp. 0.5 Amp. 800 Amp. 320 Amp. 400 Amp. 0.5 Amp. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What does happen if tripled harmonics given to induction motor? Will results in short circuit. Nothing will happen. Will results in open circuit. Fail to start. Will results in short circuit. Nothing will happen. Will results in open circuit. Fail to start. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS