Electrical Machines In DC machine torque is proportional to which of the following? armature current(Ia) both A and B flux(φ) None of these armature current(Ia) both A and B flux(φ) None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an additional resistance is connected in series with a DC series motor operating at rated speed, the speed of the motor will Oscillate around the normal speed. Remain unaltered. Increase. Reduce. Oscillate around the normal speed. Remain unaltered. Increase. Reduce. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Exciting current of an induction motor is equal as power transformer. higher than power transformer. none of these. lesser than power transformer. equal as power transformer. higher than power transformer. none of these. lesser than power transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An 8 pole DC generator has 500 armature conductors and useful flux per pole of 0.065 Wb. What will be the emf generated if it is lap connected and runs at 1000 rpm. What must be the speed at which it is driven to produce the same emf if it is wave wound? 2166.67V, 270 rpm. 541.67V, 200 rpm. 541.67V, 250 rpm. 2166.67V, 230 rpm. 2166.67V, 270 rpm. 541.67V, 200 rpm. 541.67V, 250 rpm. 2166.67V, 230 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dissolve gas analysis of transformer oil is carried out to determine condition of transformer. condition of bushings. condition of transformer oil. condition of bushing stud. condition of transformer. condition of bushings. condition of transformer oil. condition of bushing stud. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Tappings of a transformer are provided at the neutral side end of hv side at the phase end of lv side at the phase end of hv side at the middle of hv side at the neutral side end of hv side at the phase end of lv side at the phase end of hv side at the middle of hv side ANSWER DOWNLOAD EXAMIANS APP
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