What the methode get earth resistance?

2 Answers  

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In pakistan appliances work on 220v at 50hz and in us appliances work on 110v at 60hz what is basic theory to explain it

1 Answers   SNGPL,

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i am gng to visa interview this july i have 4 backlogs gre 1010,toefl 75,pls give me the tips pls pls

0 Answers  

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In how we connect watt meter for open & short circuit test of a single phase transformer.

2 Answers   Sail,

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Hi, I've just got into my electrical engineering course and I need some help with a question of mine here. During a site visit, we were shown a main LT panel which has switchgears, ammeters and different kinds of relays and the distribution network from that panel. In the main LT panel I've noted down the current readings as Ir - 163A, Iy - 150A and Ib - 147A. The Line to Line voltage is 415 V at 50 Hz and Line to Neutral voltage is 230V at 50 Hz. From the above details, how would I calculate the kVA rating of transformer? The primary side voltage of the transformer is 11 kV and the secondary side voltage is 415V and the frequency is 50 Hz.

2 Answers  

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Explain the propagation of harmonics in the network and influence of phase angle of harmonics.

0 Answers  

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How the field flux is controlled in DC drive ?

4 Answers   TATA,

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Explain principle of Soft-starter & how its working???

12 Answers   MAHINDRA,

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What is Traction? 1KVA Alternator, How much urrent taken?

0 Answers   Bhel,

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During the main stator winding insulation testing (phase to ground)of 11kv alternator (Lerysomer) i found 0 and resistance with multimeter and found 20 killo ohm while the power cables are connected both end (Generator & VCB). In VCB PT (Potential transformer) are connected. Please any body explain that method of insulation is correct or not? also describe of PT connections

1 Answers   Private,

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why high speed tripping relay will be used in tripping circuit why not normal relay

0 Answers  

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ups and invertor battery selection chart and full formula

2 Answers   APC,

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