Electrical Machines The speed of stator rotating magnetic field (RMF) with respect to rotor is Zero Ns S.Ns Nr Zero Ns S.Ns Nr ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the eddy current loss if the supply frequency of a transformer becomes double? Eight times. Four times. Remains same. Doubled. Eight times. Four times. Remains same. Doubled. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Skewing of the rotor in a 3 - Φ squirrel cage induction motor reduces noise and pullout torque, but increase parasitic and starting torque. noise, parasitic torque, starting torque and pull out torque. noise and parasitic torque, but increase starting and pull-out torque. noise, parasitic and starting torque, but increase pull out torque. noise and pullout torque, but increase parasitic and starting torque. noise, parasitic torque, starting torque and pull out torque. noise and parasitic torque, but increase starting and pull-out torque. noise, parasitic and starting torque, but increase pull out torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines From no load to full load the slip will slightly decrease. None of these slightly increase. not change. slightly decrease. None of these slightly increase. not change. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor when the length of the air gap is increased, the magnetizing current of the motor increases while the short circuit current __________________. decreased. increased. kept constant to certain value. remains unchanged. decreased. increased. kept constant to certain value. remains unchanged. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Exciting current of an induction motor is lesser than power transformer. none of these. equal as power transformer. higher than power transformer. lesser than power transformer. none of these. equal as power transformer. higher than power transformer. ANSWER DOWNLOAD EXAMIANS APP
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