What is the de rating factor of cable? What is the importance of the de rating factor in cable select

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i ha done my 10th with 71% ,ITI with 81% 11th with 75% 12th 43% apprentiship with 71% in SAT i secure 1390 ,TOEFL 27 i was refused four times and in all me interview visa officar told that i am not Qualify for study in USA but i completed my 12th yes i got low persentage in my 12th but i seen to much student they already got visa with them 3 or 4 backlocs so why they are refused me ?

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What is maximum power transfer theorem?

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1) Explain why we don't link the two earthing system ht and mv on a pole mounted transformer sub-station.

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What is switch gear? How it is work ?

1 Answers   AbaQulusi Municipality, Lupin,

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What is cable gland,why does use for?

5 Answers   ABB,

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what is differnce btwen lll and lllg faults

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why we use CVT (capacitive voltage transformer)in switch yard?

5 Answers  

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Why the rating of the HT breakers are in 1250 Amp, while the load on the breaker is around 50 Amp. ?

9 Answers   Wipro,

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findout of current?details 440v,3phase,085pf,hp-5

9 Answers  

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what is settable hystersis protection? If any body knows plz kindly post the answer..

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what happen when generator neutral supply and transformer neutral supply linked

3 Answers  

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