Electrical engineer Interview Questions

I have answered what i have got.

82.88% in 10th and 73% in diploma

70%in 8semester

Power is cosine angle between current and voltage

mathematically cos of the angle between voltage and current physically the angle measure the active and reactive power . the reactive power back to the source again , the angle measure that value

Yes

Yes

In order to insulate and to provide cooling to the windings we use transformer oil. Transformer oil has very high breakdown voltage so that it does not breakdown inspite of having high voltage coils around it. When transformer works on high load its winding temperature increases hence oil temperature also increases which then cooled through the cooling tubes having contact with outside air.

Cooling purpose , transformer oil is insulation oil also

starter are three types (DOL,STAR DELTA,AUTO TRANSFORMER STARTER)

Good

Reverse power trip, Under voltage trip, Over current trip ( Long time and short time over current) For prime mover, L.O.Low pressure trip, High water temperature trip etc..

Reverse power trip, under voltage trip, over current trip

i have never done but can do it

Yes i am capable for doing this