Answer Posted / ashish patil

First find the full load current of transformer.2MVA
transformer current value comes near 2915 A. consider
overloading capacity 10%. it comes near 3100.
so u can select indor Air circit braker or 4000A
capacity.

i have some screw comprressor with 630kw power,i have established them with simple star to delta circuit,by the way there is so much inertia when the screw comprressors start, can you offer me contactors power with 400vac or any cataluge to choose the contactors

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how to calculate mf when meter and cTPT detail are given

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how to find ratio of CT & PT in 66/11kv 12 mva supply system ? explain with calculation.

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What is the difference between grid and off- grid system??

1994

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explain why core loss of a transformer is almost constant under different load conditions when connected across a constant voltage and constant frequency.

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Is it possible to make a 5P10/ CT Ratio 50/1A Burden 5VA

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why effective resistance should be more than static resistance in transmission line?

2150

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Is it possible to obtain 480v or 550v in single phase output by giving the input to 230v to a single phase torodial type transformer without using a stepup transformer?

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when 20hp 3 phase motor start no load condition in star or delta connection.find current and write formula.(tariq)

2123

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Starting current of a 10 HP induction Motor is ______ time’s full load current.

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I AM FROM ELECTRICAL ENGINEERING ? I AM ASPIRING FOR "BHEL".HOW I HAVE TO PREPARE .ON WHICH TOPICS TO BE CONCENTRATE MORE.PLEASE GIVE FULL DETAILS OF WRITTEN EXAM.

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What are operating procudures & Safety precautions to be observed while operating OLTC in manual mode ?

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how to select rating of HT Panel

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