Answer / sailendra narayan

this is due to magnetostriction energy

Answer / rakesh patel

Due to 3rd harmonics,frequency of the system is three times of the supply frequency.For example,if supply frequency is 50hz, it raised to 150hz due to 3rd harmonics.

Harmonics is produced due to unbalanced load, any types faults in the system like earth fault,Line-Line faults.

we have one ups its neutral is not earthed.its one distribution MCB has a earth fault.but we can not put off any MCB.so how to find out that in which circuit is earthed without isolating the breaker.

3 Answers   CFCL,

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how determine base of given number like 302/20=12.1

2 Answers  

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what is the means of dedicate earthing?

2 Answers  

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Is there any relation between transformer capacity and its bdv?

1 Answers  

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If the kvar rating of capacitor bank is 600 kvar at 525V then what it's rating at 415v.

2 Answers  

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What is the clear distance between a MV panel(rear side) and wall.

3 Answers   L&T,

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WHAT IS THE NECESSITY OF GIVING PARTICULAR COLOURS FOR 3 PHASE TRANSFORMERS.....

5 Answers  

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Why do we twist copper to make cable?

3 Answers   Bhel, Integrated, MR Cables,

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what is advantage of providing taping on HT side?

4 Answers  

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why incomer bay is required before transformer bay if there are more than 1 nos. of transformer bay.

0 Answers  

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Explain UPS

1 Answers   Powerica,

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if a damaged 500kva transformer with %impedance 2.6 is replaced by two transformers of 250Kva with different % impedance will they be able to catter the load. what will be the ratio of load on the two transformers if the % impedance is in the ratio 1:2

2 Answers   Siemens,

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