what is transformer?

4 Answers   Mphasis,

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( Re: WHAT SHOULD BE THE RATING OF MCCB FOR 415V,3Ph,50KVAR CAPACITOR BANK Answer # 1 The capacitor current would be kvar x 1000 / (415 x sqrt3). This would be 70a approx. The MCCB selected should have *atleast 1.4 times this current i.e. 1.4 x 70= 98. So you should choose at least 100 A mccb.) regarding to this answer,i would like to know why the current have to times 1.4 to get the right amphere for the mccb.hows the formula to get the 1.4??tq

2 Answers  

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why commutator is attached with only dc macine

8 Answers   ONGC,

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What is the vector group of a transformer,how can it be found out?

0 Answers   Jindal,

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defined power system?

3 Answers   Spanco,

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Why water bubbles when D.C. Current is passed through it? Why not when A.C. Current is passed?

0 Answers  

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What do you mean by Stimulastion Test in Diesel Genarator / Why & when it's conducted ?

0 Answers   JLL,

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which circuit breaker enclosure is best for maintenance guy? 16 bolt & 20 bolt squre or 16,20 bolt hinge

2 Answers  

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What is the maximum No. of out going mccbs permitted from an LV distribution paqnel? What is the ampere relation between incomer and out going switch gears/mccbs?

0 Answers  

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On what factors the generating voltage depends ? Generating voltage are (3.3kV, 6.6KV , 11KV, 13.8kV) Why so ?

5 Answers   Bhel,

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It is used or not HT cable single core 630 sqmm in LT 3 phase capacitor bank which is used in PCC(power control center).

1 Answers  

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draw the full wave and half wave circuit of 3 phase system and inverter circuit used in ups 

0 Answers  

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