Answer / raja sekhar

b'coz u can know that the high voltage winding has low
current and when switch is tapped there is less possibility
of geetin arc

Answer / jagadeesh

i think to reduce the leakage flux

Answer / anu

Tap changing at HT side is more efficient

how to test a motor from megger

5 Answers   JSW,

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What is the basic difference of turn ratio & transformation ratio for a transformer?

8 Answers   IGT,

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I am B.E.electrical engineer having 7 years of experience in Transformer testing upto 315 MVA.I want to khow how I can get the 'Electrical Valuer' License.

0 Answers  

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What is the equivalent circuit of a transformer and its vector diagram?

0 Answers   Bhel, Madhucon,

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Explain (in simple ) - root mean square. whats its role in electrical fundamandal.where its used

0 Answers   MRF, PPCL,

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why t/f are rated in kva. is it conserned with p.f.

3 Answers  

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Q. calculate the value of the resistor to be connected in series with a 100W; 230V lamp so that the wattage of the lamp is reduced to 35W

8 Answers  

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what is the disadvantage of leading power factor...why can't we use it (pf=0) for a long period of time?

10 Answers   Appco, snsce,

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WHY 6.6KV MOTORS ARE STAR CONNECTED AND WHY NOT DELTA CONNECTED,

15 Answers   Bhel,

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What is real time power factor control panel(RTPFC)?

0 Answers  

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In a d.c current, the power is the product of voltage and current. This relationship does not always apply to effective(r.m.s) values in an a.c circuit. Explain the reason for this.

2 Answers  

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what is rotating transformer? what is the uses of it?i mean applicaitons?

5 Answers   First Lead,

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