how dia of wire and angles are calculated for overhead shielding wire to protect substation equipment from lightening strokes???

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what are safety seals in HT line?

2 Answers  

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working principles of cf lamp,incandescentlamp and f lamp?

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Why should be the frequency 50 hz 60hz only why not others like 45, 95 56 or anything , why should we maintain the frequency constant if so why it is only 50 hz 60hz?

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what happen to a dc series motor if it given as ac supply accidentaly

2 Answers   ONGC,

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Hi, I've just got into my electrical engineering course and I need some help with a question of mine here. During a site visit, we were shown a main LT panel which has switchgears, ammeters and different kinds of relays and the distribution network from that panel. In the main LT panel I've noted down the current readings as Ir - 163A, Iy - 150A and Ib - 147A. The Line to Line voltage is 415 V at 50 Hz and Line to Neutral voltage is 230V at 50 Hz. From the above details, how would I calculate the kVA rating of transformer? The primary side voltage of the transformer is 11 kV and the secondary side voltage is 415V and the frequency is 50 Hz.

2 Answers  

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can we synchronize star system generators with delta system transmission line ? and how ?

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what is difference between electrical and electronics

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how to ctrl motor by use of ac or dc drive.plz explain evdintly

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A two-terminal variable resistor is known as a

1 Answers  

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Why strting torqe high in inducation motor?

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i have done diploma and btech in EE and live in Chandigarh so kindly help me how can i make my competency certificate in my area.

0 Answers   Multi Metals, ONGC,

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