Electrical Machines A transformer has hysteresis loss of 30 W, at 240 V, 60 Hz. The hysteresis loss at 200 V, 50 Hz will be 25 W. 28 W. 30 W. 36 W. 25 W. 28 W. 30 W. 36 W. 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, parasitic and starting torque, but increase pull out torque. noise and parasitic torque, but increase starting and pull-out torque. noise and pullout torque, but increase parasitic and starting torque. noise, parasitic torque, starting torque and pull out torque. noise, parasitic and starting torque, but increase pull out torque. noise and parasitic torque, but increase starting and pull-out torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The condition for maximum running torque is 0.5 lagging 0.707 lagging unity zero R = S.X 0.5 lagging 0.707 lagging unity zero R = S.X ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Capacitor fitted with ceiling / table fans is of the value of 2 - 3 µF. 1 - 2 µF. 5 - 10 F. 0.1 µF. 2 - 3 µF. 1 - 2 µF. 5 - 10 F. 0.1 µF. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 230 volt dc motor has an armature winding resistance of 0.5 ohm. Calculate the emf induced by the motor if the full load armature current is 23 ampere. 218.5 volt. 120 volt. 220.4 volt. None of these. 218.5 volt. 120 volt. 220.4 volt. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power developed by salient pole synchronous machine is/are power due to saliency or reluctance only None of these excitation power only both 1 and 2 power due to saliency or reluctance only None of these excitation power only both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
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