Electrical Machines The power factor of an induction motor operating at no load will have a value around 0.2 lead 0.2 lag 0.9 lag unity 0.2 lead 0.2 lag 0.9 lag unity ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Stepper motor is used in computer printers All of these food processing traction computer printers All of these food processing traction 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 prime mover speed same phase sequence same frequency same voltage magnitude same prime mover speed same phase sequence same frequency ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine torque depends on which of the following? both A and B flux (φ) armature current (I) speed both A and B flux (φ) armature current (I) speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is/are the necessary conditions for voltage build up in self excited generator? Poles should contain residual flux. Field winding resistance should be less than critical resistance. Field winding should be properly connected to armature winding. All of these Poles should contain residual flux. Field winding resistance should be less than critical resistance. Field winding should be properly connected to armature winding. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the cause of rapid brush wear may be imperfect contact. any of above. severe sparking. rough commutator surface. imperfect contact. any of above. severe sparking. rough commutator surface. ANSWER DOWNLOAD EXAMIANS APP
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