Answer Posted / pg

Because at starting there in no back emf hence there is no
apposition to inrush current. Hence a heavy current flows
through at starting

If there are two transformer having rating of 2.5mva, 6.6kv/440v(satr-star),and the load is 600kw then what is better to maintain less losses in transformer having both transformer in parellel or only single transformer connected to load? Please give calculated answer

2703

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How to reduce -234126219.6403 MVAr generation and by what?

1622

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what is per unit calculation?looking for simple and strong explanation thk u

2555

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what kelvin's law ?

2099

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What is dc current source? Differentiate between ideal and non ideal current sources?

1463

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what will happen if OLR CT in all phases are short circuted

2180

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at which voltage level arcing ground is occurs ??????????

2051

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I am going to appear for the RRB Chennai Section Engineer online exam. Please send me the question papers from 2001 to date to my mail id:upendrakrishna20@gmail.com,plz send me ,or send any other rrb papers plzzzzzzzzzzzzzzzzzz

2077

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What are electric motors?

1151

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3 shows a 415 V, 3-phase generator supplying a 3-phase 415/110 V transformer. Draw the individual and combined impedance diagrams to a base of 10 kVA. Determine the system fault kVA and the fault currents at the 415 V and 110 V busbars for short circuit faults on the transformer input or output terminals. Work in p.u. values of impedances.

2654

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What is super thermal power plant? and how it will differ from normal thermal power plant

2270

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i have attended the interview on 4th June,08 at Kolkata in IOCL, can anybody tell me what is its result

1973

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What is the difference between type1 and type2 relay protection co-ordination for motor feeders

2220

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Formulae for calculating the transmission line losses for different voltage levels

2168

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Is it possible to protect 3phase overload and earth fault of the 3phase system using two CT's.

2101

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