Electrical Machines In case of induction motors the ratio of length to pole pitch for minimum cost, is taken as 1.0. 1.5 to 2. 3 to 5. 2 to 3. 1.0. 1.5 to 2. 3 to 5. 2 to 3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following DC generator will be in a position to build up without any residual magnetism in the field? Series. Shunt. Separately excited. Compound. Series. Shunt. Separately excited. Compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For high current and low current rating which winding is employed to DC machine? Both lap and wave winding Wave winding None of above Lap winding Both lap and wave winding Wave winding None of above Lap winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If dimension of all the parts of a synchorous generator and the number of field and armature turns are double, then generated voltage will change by a factor of 4. 8. 2. 1. 4. 8. 2. 1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the excitation of normally operating unloaded, salient pole synchronous motor suddenly gets disconnected, it continues to run as a DC motor. induction motor. switched reluctance motor. variable reluctance motor. DC motor. induction motor. switched reluctance motor. variable reluctance motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an additional resistance is connected in series with a DC series motor operating at rated speed, the speed of the motor will Remain unaltered. Increase. Reduce. Oscillate around the normal speed. Remain unaltered. Increase. Reduce. Oscillate around the normal speed. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS