Electrical Machines In auto transformer if the turn ratio is K, what is the power transferred inductively? None of these K × input power both A and B (1-K) × input power None of these K × input power both A and B (1-K) × input power ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer core is made up of a silicon steel laminations which has maximum flux density 1 Tesla. If it was cold rolled grain oriented its flux density increases to 1.6 Tesla. What is the saving in core size or area due to cold rolled grain oriented process? 68% 60% 40% 38% 68% 60% 40% 38% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In salient pole synchronous machine, the reluctance power varies as cosδ sinδ cos2δ sin2δ cosδ sinδ cos2δ sin2δ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An IM cannot run at synchronous speed because rotor torque will not be produced. induction motor will become synchronous motor. none of above. air friction will prevent it. rotor torque will not be produced. induction motor will become synchronous motor. none of above. air friction will prevent it. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eg (generated emf) and Eb (back emf) both are same. none of above. changes. different. same. none of above. changes. different. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of stator rotating magnetic field (RMF) with respect to rotor is Zero Nr Ns S.Ns Zero Nr Ns S.Ns ANSWER DOWNLOAD EXAMIANS APP
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