what is V.L.F. testing of power cable? do you know the
voltage ratings, like for what rating and size of cable
what rating of V.L.F. testing is used?
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In 11/0.414 KV Parralel supply network with Bus tie closed what will be the fault level is it doubled or halved??
What is the difference between Earthing & grounding
plese send me the oces/dgfs sylabus and previous year question pattern of electrical engg.?
Do you know the alignment of a motor?
Is a d.c.compound motor is use as a booster? how?
What is the use of core in the transformer?
what is harmonics?explain in simple words?what is its impact on circuit?
how one can know the charging time, discharging time of a 12 VDC battery ? If i have a battery of 12 VDC , 4.0 AH , how long will it take to charge from a charger (power supply) of input 220 V , Output 15 V and output current of 3000 mA and how long will it take to discharge whether using or not ? How much backup will it give ?
What is Harmonics & what are its efect & which harmonic is dangerous
why two contacts(in series) are using in closing circuit
Actuality I have at home electrical panel with 220v 50hz, and I want to converter from there to 110v 60hz, to wiring on the half of my house. Also I like to keep another half of my house with the original 220v 50hz. What is the best and safety way to do?
1.differance between onload ups and off line ups.