Electrical Machines The speed of stator rotating magnetic field (RMF) with respect to rotor is Ns Zero S.Ns Nr Ns Zero S.Ns Nr ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An IM cannot run at synchronous speed because none of above. rotor torque will not be produced. air friction will prevent it. induction motor will become synchronous motor. none of above. rotor torque will not be produced. air friction will prevent it. induction motor will become synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The voltage regulation of a DC generator at full load being zero implies that the generator is cumulatively compounded. deferentially compounded. shunt connected. series connected. cumulatively compounded. deferentially compounded. shunt connected. series connected. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is not a necessary condition to be satisfied for synchronising an incoming alternator to an already operating alternator? same voltage magnitude same frequency same phase sequence same prime mover speed same voltage magnitude same frequency same phase sequence same prime mover speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine torque depends on which of the following? armature current (I) flux (φ) both A and B speed armature current (I) flux (φ) both A and B speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The overall power factor of an on load transformer is always leading. is always unity. is always lagging. depends on the power factor of the load. is always leading. is always unity. is always lagging. depends on the power factor of the load. ANSWER DOWNLOAD EXAMIANS APP
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