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 do you select a cable size(Cu & Al) for a particular load?

2 Answers  

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what is the earth resistance ?

5 Answers   Bhel, Cummins,

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sir, in a industry present pf is 0.54 pf 25hp power is there its want improve 0.9 pf. which suitable capacity capacitor is suitable please inform me.

2 Answers  

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what is speed of light?

8 Answers  

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why transmission line towers are longer than communication line towers?

3 Answers  

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what is the use of CAPACITOR in CFL lamp?

6 Answers   Areva, Autopal,

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effect of single phase transformer on full load current?

2 Answers  

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which is better 50 HZ supply or 60 HZ supply?

6 Answers  

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Some times to change of DOR of a motor, interchange of R & B is not effected and RYB take same current, but interchange of R&Y is effected ie change the DOR. My doubt is what is the problem in motor and how it is happen.

0 Answers  

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In Power transformer oil temperature or winding temperature will be high

3 Answers  

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extremely urgent please, why a fuse is used before voltmeter but not with a ammeter connected to a CT(current transformer),thanks in anticipation.

4 Answers   NPCIL,

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In VSD (variable speed drive)I/P and O/P connections given wrongly what will happen?

5 Answers  

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