what's burden resistor, why it's used?

1 Answers   Bhel, TVS Group,

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What is the difference between IS:1554 (Part 1)/1988 & IS:694/1990 ? What do these two standards specify about?

2 Answers  

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If we increase frequency in transmission line in lieu of voltage what will happen?

1 Answers  

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List the characteristics of filter?

0 Answers  

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Why power factor is arising in electrical circuit, is it possible to eliminate from the circuit, why

2 Answers  

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what is vch ?

1 Answers   CTS,

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what is auto re-closer?

0 Answers  

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how many amps in 1 KVA? V=440v, PF=0.8 and FREQ=50Hz

22 Answers  

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I have carried out wiring for lighting in a shed in Industrial area which contains Metal halide lamps & have balanced in 3ph.Now when we put all the lines on in the daytime the current taken at 3phases at MCB comes to be equal i.e.28,29,28Amps respectively but in the night time i.e between 7p.m.to 11p.m. at the same MCb the current is 52,59,62Amp, though I have fit 63A MCB it is tripping in the above period.What may be the reason.? Note: This industry is located in industrial area where majority of steel ingot manufacturing plants are there. Whether this may be due to harmonic? what should I do to overcome above problem.pl suggest urgently.

4 Answers  

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Explain with example of functional requirements of protection relay in terms reliability, selectivity, sensitivity

0 Answers   NCC,

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why ten delta testing is carried out on power transformer

0 Answers  

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132 KV TRFO BUSHING BURNT WHEN A 6.6KV HAS BEEN APPLIED TO IT .WHY .ANY REASON ?

2 Answers   MRF,

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