Electrical Machines In case of 3 - Φ IM, plugging means starting the motor on load which is more than the rated load. locking of rotor due to harmonics. interchanging two supply phases for quick stopping. pulling the motor directly on line without a rotor. starting the motor on load which is more than the rated load. locking of rotor due to harmonics. interchanging two supply phases for quick stopping. pulling the motor directly on line without a rotor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Scott connections are used for any of the above. three phase to two phase transformation. three phase to single phase transformation. single phase to three phase transformation. any of the above. three phase to two phase transformation. three phase to single phase transformation. single phase to three phase transformation. 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. providing damper winding in its rotor circuit. coupling it with a DC compound motor. any of the above methods. coupling it with a small AC induction motor called the pony motor. providing damper winding in its rotor circuit. coupling it with a DC compound motor. any of the above methods. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slot wedges in a dc machine is made up of mild steel. cast iron. fibre. silicon steel. mild steel. cast iron. fibre. silicon steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Capacitor in split phase induction motor is used to start the motor. improve the power factor. improve the starting torque. reduce the harmonics. start the motor. improve the power factor. improve the starting torque. reduce the harmonics. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V dc machine has an armature resistance of 1Ω.If the full-load current is 20 A, the differenc in the induced voltages when the machine is running as a motor and as a generator is zero 50 V 40 V 20 V zero 50 V 40 V 20 V ANSWER DOWNLOAD EXAMIANS APP
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