Electrical Machines In speed control of DC Series motor, speed lower than the rated speed can be obtained by Connecting an additional resistance in stator circuit. Connecting an additional resistance in the field circuit. Connecting an additional resistance in the armature circuit. Any of the above. Connecting an additional resistance in stator circuit. Connecting an additional resistance in the field circuit. Connecting an additional resistance in the armature circuit. Any of the above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following bearings and their uses are correct ball bearings → small machines neither 1 nor 2 roller bearings → large machines both A and B ball bearings → small machines neither 1 nor 2 roller bearings → large machines both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a loaded DC motor, if the brushes are given a shift from the interpolar axis in the direction of rotation, then the commutation will improve and the speed rises. deteriorate and the speed rises. improve and the speed falls. deteriorate and the speed falls. improve and the speed rises. deteriorate and the speed rises. improve and the speed falls. deteriorate and the speed falls. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Direction of the current in the compensating winding is________ to the direction of current in the armature conductors? None of these same exactly opposite either of these None of these same exactly opposite either of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statements is/are correct ? Compensating winding will act under the pole. None of these Inter pole winding will act in interpolar region. Both A and B. Compensating winding will act under the pole. None of these Inter pole winding will act in interpolar region. Both A and B. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For high current and low voltage rating which winding is employed to DC machine? Both wave and lap winding. Wave winding. Lap winding. No wave and lap winding. Both wave and lap winding. Wave winding. Lap winding. No wave and lap winding. ANSWER DOWNLOAD EXAMIANS APP
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