Answer Posted / guest

earth

what is the use of commutator in dc motor if we supply ac ? commutator is used to convert ac to dc.and it is used to arrange the flux in unidirectional in case of dc supply. if we give ac as supply to dc motor what is the use of commutator?

2078

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HOW THE OLTC TRANSFORMER SAVE ENERGY IN COMPARISON TO OFF LINE TRANSFORMER AND IS IT ECONOMICAL TO REPLACE THE OFF LINE TRANSFORMER TO OLTC TRANSFORMER

2187

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What is the most essential condition for the voltage build up for a d.c. Shunt generator?

1143

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In hydel power plants, L.A's, S.C's are placed inside the control panel boards. what is the purpose? [already the total body was earthed to ground.]

1979

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What are the causes of having an rmu explode after installation? And how do u treat the bushings of an rmu?

2496

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what is data block in plc ? How the values of data block are written and read by hmi ? what is the difference between function and function block ?

3411

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How to calculate the sag of OPGW during stringing???

2572

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What is phase cross over frequency?

1118

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How you calculating the 30 Hp 3 phase AC motor of power what size of cable is used for this motor?

1655

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why we use sinosidal voltage / current instead of others in system?

2198

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features of hbc fuses

2410

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would you please give me any idea about the BARC interview question on electrical? i have an interview on 1st july.....plz hlp me.......its urgent......

2459

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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

3956

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What we mean by vintage of an engine+Generator?

2118

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What is 11 N1 and 12 N2 in single phase Transformer ?

1926

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