Electrical Machines The short circuit test on a transformer is conducted to obtain core loses only. hysteresis loss. copper losses. eddy current loss. core loses only. hysteresis loss. copper losses. eddy current loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the speed of a dc motor increases with load torque, then it is a comulatively compounded motor differentially compounded motor permanent magnet motor series motor comulatively compounded motor differentially compounded motor permanent magnet motor series motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutation in a DC machine may be explained as a process in which magnetic field is set up. by which electric current in a coil is reversed. by virtue of which emf is induced in the armature conductors. how alternate flux affects the main field flux. in which magnetic field is set up. by which electric current in a coil is reversed. by virtue of which emf is induced in the armature conductors. how alternate flux affects the main field flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In synchronous motor, the damper winding is generally used to reduce the eddy currents. reduce noise level only. prevent hunting and provide the starting torque. provide starting torque only. reduce the eddy currents. reduce noise level only. prevent hunting and provide the starting torque. provide starting torque only. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The synchronous motor can be started by any of the above methods. coupling it with a DC compound motor. coupling it with a small AC induction motor called the pony motor. providing damper winding in its rotor circuit. any of the above methods. coupling it with a DC compound motor. coupling it with a small AC induction motor called the pony motor. providing damper winding in its rotor circuit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole 50 Hz induction motor is running at 1470 rpm. Find the speed of stator magnetic field with respect to rotor? 1500 rpm 1470 rpm 30 rpm zero 1500 rpm 1470 rpm 30 rpm zero ANSWER DOWNLOAD EXAMIANS APP
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