What is working principle of ACB and VCB?

9 Answers   Greenko, HCC,

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how much percentage set in transformer diffrencialrelay

1 Answers  

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It is being often experienced that due to single phasing fault of any source transmission line of any closed loop synchronized circuit all the power transformers with primary stared trips but the power transformer with primary delta wont, why ?

1 Answers   MSEB,

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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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what is PWM in IGBT and how it works for drive.?

0 Answers   BRG,

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What will be result if we connect LT votage to the terminal of HT Transformer?

3 Answers   Equate,

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Why electrical engineer use Cu Strip for transformer neutral why not GI Strip? What if we use GI instead of Cu does it affects the transformer performance.

7 Answers  

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State kirchoff voltage law?

0 Answers  

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A 12.5 hp slip ring motor taking high initial current and its MPCB is getting open.what may be the reason?

3 Answers  

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what is integrated ac contact circuit

0 Answers  

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why the impedence of the transformer is expressed in percentage?

3 Answers   DEWA,

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Explain REF protection and sbef protection in transformer?

3 Answers  

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