Electrical Machines When the supply terminal of a DC shunt motor are interchanged The direction of rotation will reverse. The motor will run much faster in the same direction. The motor will stop. The motor will run at its normal speed in the same direction as before. The direction of rotation will reverse. The motor will run much faster in the same direction. The motor will stop. The motor will run at its normal speed in the same direction as before. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The interpoles in dc machines have a tapering shape in order to reduce the overall weight economise on the material required for interpoles and their windings reduce the saturation in the interpole increase the acceleration of commutation reduce the overall weight economise on the material required for interpoles and their windings reduce the saturation in the interpole increase the acceleration of commutation ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field winding connection of DC shunt motor is changed motor will become slow. motor will not run. It will run in opposite direction. It will run in same direction. motor will become slow. motor will not run. It will run in opposite direction. It will run in same direction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Satisfactory commutation of DC machine requires brushes should smoothly run in the holders. brushes should be of proper grade and size. smooth, concentric commutator properly undercut. All of these brushes should smoothly run in the holders. brushes should be of proper grade and size. smooth, concentric commutator properly undercut. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the number of poles required, when the frequency is 50Hz and speed of the motor is 500 rpm? 12 10 24 5 12 10 24 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Air core transformer as compared to iron core transformer, has more copper loss. no magnetic core loss. less magnetic core loss. more magnetic core loss. more copper loss. no magnetic core loss. less magnetic core loss. more magnetic core loss. ANSWER DOWNLOAD EXAMIANS APP
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