Answer Posted / ali

Hi ,

My 50/60MVA ONAN/ONAF power transformers tripped at 47MW power , but no windding temp alarm or trip , no any other indication, just PRV trip, what is the reason ?

any body,pls tell me how to done relay coordination ? how to coordinate by TCC curve?how to read the tcc curve?

2148

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Motor,transformers,capacitor tubelight etc....

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Please send 110 kv sb station full single line drawing(sld)

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1.main parts of generator? what is used A-check,B-check,C- check? 2.what is FM200 system in data centers? 3.difference between pac,ahu?

2134

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IF % IMPEDANCE OF A TRANSFORMER IS INCREASED FROM 5.8% TO 8% HOW MUCH THE EFFICIENCY OF THE TRANSFORMER WILL COME DOWN?

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what is destructive and non-destructive testing of welding

1686

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what are the types of electromagnetic forces developed in practical transformer?

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What is the difference between electronic regulator and ordinary electrical rheostat regulator for fans?

1109

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Which are resistive loads & which one are inductive loads : Refrigerator, Split air conditioner, ceiling fans, well pump, fluoresecent bulbs, T.V, CRT Monitors, Adsl Routers, C.P.U, Printers, Deep Freezers, Speakers, DVD Players, Microwave oven etc. ? Output Power for these Appliances Would be same like this : P = V * A * P.F Or would be changed ? thanks

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In electrical what is earth(ground)connection, wht is the importance of it, why it is recomended to maitain below 3VAC between Neutral and earthspecially in PLC used machines?

2221

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1) What are your personal strength? 2) What are your personal areas of improvement? 3) What are your expectations from from a particular job? 4) what are your carrier objectives?

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Thumb rule of cable size(rm>30 rm)X multiplying factor=ampere

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how to calculate earth fault relay current and CBCT ratio

8351

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how we will deside the high voltage value

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why impedance relay is used for medium transmission line protection

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