Why delta star trformers are used for lighting loads?
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what happens when the supply frequency to the tube light is reduced to 25Hz....?
1.After synchronising the alternator to the grid,how we r delivering power to the grid?if the i/p increases does the speed hence frequency increases? 2.y the power factor is changing when exitation changes?what is the relation with p.f and flux?
Why Cables are always circular and not square or rectangular?
WHAT IS THE DIFFERENCE BETWEEN VOLTage and potential diff
Upto what extent, the lagging power factor can be improved with the help of capacitors?
Define heating time constant of electric motor.
why selected genration, transmission or any at 11kv, 132, 220, 220 or 440 voltage which is propotional to 11. why does not any for ex. 12 kv 13kv or any
What is P.F? Formula for calculating PF in HT side?
How good are you in resolving the commercial issues to Employer's advantage?
If we say that an cable of size 3.5X 50 mm sq. can take current upto 140 amps,is it the current of single core of the cable or of all the cores jointly.
How can we get a Neutral from a three phase suply? If we meet all three phases at a point to take neutral then why dont thay get sparked?
What is the difference between a Vacuum Circuit Breaker and a Load Break Switch?