Electrical Machines Hopkinss test in DC motor is conducted at ? No load. Full load. Low load. None of these. No load. Full load. Low load. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ induction motor power factor at starting is high as compared to that while running. power factor at starting is low as compared to that while running. power factor at starting in the same as that while running. none of them. power factor at starting is high as compared to that while running. power factor at starting is low as compared to that while running. power factor at starting in the same as that while running. none of them. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole lap wound dc generator has 4 brushes, if one of the brush is damaged, what will be the change in V, I and P ratings V, I and P V/2, I and P/2 V/2, I/2 and P/4 V, I/2 and P/2 V, I and P V/2, I and P/2 V/2, I/2 and P/4 V, I/2 and P/2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load primary current in a transformer leads the applied voltage somewhat less than 90Ã& leads the applied voltage by exactly 90Â& lags behind applied voltage by exactly 90Â&am lags behind applied voltage somewhat less than 90à leads the applied voltage somewhat less than 90Ã& leads the applied voltage by exactly 90Â& lags behind applied voltage by exactly 90Â&am lags behind applied voltage somewhat less than 90à ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor having 8 poles runs at 727.5 rpm. If the supply frequency is 50Hz, the emf in the rotor will have a frequency of 1.5Hz 48.5Hz 51.5Hz 2.5Hz 1.5Hz 48.5Hz 51.5Hz 2.5Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To get the speed of DC motor is more than normal without wastage of electrical energy _____________ is used. Any of above method. Rheostatic control. None of above. Ward Leonard control. Any of above method. Rheostatic control. None of above. Ward Leonard control. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS