Electrical Machines The emf induced in the dc generator armature winding is AC DC None of these AC and DC AC DC None of these AC and DC ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A Shunt generator running at 1000 rpm has generated emf of 100 V. If the speed increases to 1200 rpm, the generated emf will be nearly 120 V 240 V 175 V 140 V 120 V 240 V 175 V 140 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a loaded DC motor, if the brushes are given a shift from the interpolar axis in the direction of rotation, then the commutation will improve and the speed rises. improve and the speed falls. deteriorate and the speed falls. deteriorate and the speed rises. improve and the speed rises. improve and the speed falls. deteriorate and the speed falls. deteriorate and the speed rises. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine torque is proportional to which of the following? both A and B armature current(Ia) flux(φ) None of these both A and B armature current(Ia) flux(φ) None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines As compared to an induction motor, the air gap in a DC motor is same. less than 50%. more. between 50% and 90%. same. less than 50%. more. between 50% and 90%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the operating region of slip in a 1-phase induction motor? -2 < S < 2 0 < S < 1 0 < S < 2 -1 < S < 1 -2 < S < 2 0 < S < 1 0 < S < 2 -1 < S < 1 ANSWER DOWNLOAD EXAMIANS APP
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