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 We can apply source transformation to voltage source when a resistance is connected to it in 15 HP. 13 HP. 14 HP. 10 HP. 15 HP. 13 HP. 14 HP. 10 HP. 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 phase sequence same frequency same prime mover speed same voltage magnitude same phase sequence same frequency same prime mover speed same voltage magnitude ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines With the increase in speed of DC motor Back emf falls and line current increase. Both back emf as well as line current fall. Back emf increase but line current falls. Both back emf as well as line current increase. Back emf falls and line current increase. Both back emf as well as line current fall. Back emf increase but line current falls. Both back emf as well as line current increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Series field consists of--------number of turns and ---------- conductors respectively large and thick large and thin less and thin less and thick large and thick large and thin less and thin less and thick ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two transformers with identical rating, are designed with flux densities of 1.2 and 1.4 Wb / m2 respectively. The weight of first transformer per kVA is none of these. more than that of second transformer. equal to that of second transformer. less than that of second transformer. none of these. more than that of second transformer. equal to that of second transformer. less than that of second transformer. ANSWER DOWNLOAD EXAMIANS APP
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