what are the colour's and their indications in bucholz relay?

4 Answers  

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What is the differentional relay...what is the work of this in power Tx. how it is works..

0 Answers   ABB,

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if 15 kv is grounding directly what will happen?

5 Answers  

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How to do stting of vl250 siemens MCCB

0 Answers   Qatar Steel,

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working principle of UPS

15 Answers   Mantri,

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Why we are use 11KV / 22KV / 33KV / 66KV / 110KV / 230KV / 440KV this type of ratio. why cant we use other voltage ratio like 54KV / 99KV et.,

8 Answers   College School Exams Tests, Hino, ITC Infotech, Reliance, UPRVUNL,

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how to calculate the cable size for LT and HT power cables with detail explanation?

2 Answers   Asset Developments, Bhel,

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Why star point of star connected motor is not grounded? Why alternator is operated at lagging power factor?

3 Answers   TCL,

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What is meant by RCCB

3 Answers  

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what is the signification of trivector meter? why its name is trivector meter ?

3 Answers  

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Can transformer develop three phase power from a single phase source?

12 Answers   ONGC,

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for ac networks if the voltage wave form is V=Vm sinwt here the voltage Vm=230 for the frequency 50hz then the time period is 0.02 sec then for the time period 0.12 sec what is the voltage

4 Answers  

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