Electrical Machines Equalizer rings are used in which of the followings? lap winding None of these both 1 and 2 wave winding lap winding None of these both 1 and 2 wave winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In normal dc machines operating at full-load conditions, the most powerful electromagnet is field winding interpole winding interpole and compensating windings together armature winding field winding interpole winding interpole and compensating windings together armature winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statement is true for an AC synchronous motor? It is a variable speed motor. It is a high reluctance motor. It is a constant speed motor. It is a step angled motor. It is a variable speed motor. It is a high reluctance motor. It is a constant speed motor. It is a step angled motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The counter (or back) emf in a dc machine is 1. the same as generated emf in a dc motor 2. proportional to field flux and armature speed 3. not the same as generated emf in a dc motor 4.inversely proportional to field flux 5. proportional to number of armature conductors 6. constant from no load to full load From these, the correct answer is 3, 4, 5 1, 2, 5 2, 3, 6 2, 4, 5, 6 3, 4, 5 1, 2, 5 2, 3, 6 2, 4, 5, 6 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines shape of net flux density is? flat tapped or trapezoidal sine wave peaky in nature saddle shape flat tapped or trapezoidal sine wave peaky in nature saddle shape ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For the speed control of polyphase squirrel cage induction motor, if frequency of operation is decreased with constant supply voltage V, starting torque Tst decreases None of these constant V, Tst increases either of these constant supply voltage V, starting torque Tst decreases None of these constant V, Tst increases either of these ANSWER DOWNLOAD EXAMIANS APP
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