Electrical Machines A 3-phase, 50 Hz, 4 pole induction motor is running at 1440 rpm and rotor input power is 2KW. Find the rotor copper loss? 40W 60W 100W 80W 40W 60W 100W 80W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When excitation is increased (over excitation), the synchronous generator operates at any of the above. unity power factor. lagging power factor. leading power factor. any of the above. unity power factor. lagging power factor. leading power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a given torque, reducing divertor resistance of a DC series motor Decrease in speed demanding less armature current. Increase in speed demanding more armature current. Decrease in speed but armature current remains the same. Increase in speed but armature currnet remains the same. Decrease in speed demanding less armature current. Increase in speed demanding more armature current. Decrease in speed but armature current remains the same. Increase in speed but armature currnet remains the same. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Tappings of a transformer are provided at the neutral side end of hv side at the phase end of hv side at the phase end of lv side at the middle of hv side at the neutral side end of hv side at the phase end of hv side at the phase end of lv side at the middle of hv side ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Capacitor fitted with ceiling / table fans is of the value of 5 - 10 F. 0.1 µF. 2 - 3 µF. 1 - 2 µF. 5 - 10 F. 0.1 µF. 2 - 3 µF. 1 - 2 µF. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The synchronous motor can be started by coupling it with a small AC induction motor called the pony motor. any of the above methods. coupling it with a DC compound motor. providing damper winding in its rotor circuit. coupling it with a small AC induction motor called the pony motor. any of the above methods. coupling it with a DC compound motor. providing damper winding in its rotor circuit. ANSWER DOWNLOAD EXAMIANS APP
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