Electrical Machines Flux density under trailing pole tips in case of generator will decrease either increase or decrease None of these increase decrease either increase or decrease None of these increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ induction motor power factor at starting in the same as that while running. power factor at starting is low as compared to that while running. power factor at starting is high as compared to that while running. none of them. power factor at starting in the same as that while running. power factor at starting is low as compared to that while running. power factor at starting is high as compared to that while running. none of them. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator, if P be the number of poles and N be the rpm of the rotor, then frequency of magnetic reversals will be PN/60. PN/120. PN/3000. PN/2. PN/60. PN/120. PN/3000. PN/2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor is running at rated speed without any additional resistance in series. If an additional resistance is placedin series, the speed of motor Increases. Decreases. Remains unchanged. Oscillates around the rated speed. Increases. Decreases. Remains unchanged. Oscillates around the rated speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following bearings and their uses are correct neither 1 nor 2 roller bearings → large machines both A and B ball bearings → small machines neither 1 nor 2 roller bearings → large machines both A and B ball bearings → small machines ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, air gap power is 10 Kw and mechanically developed power is 8 Kw. What are the rotor ohmic losses? 3KW 2KW 1.5KW 0.5Kw 3KW 2KW 1.5KW 0.5Kw ANSWER DOWNLOAD EXAMIANS APP
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