what are effects of harmonics in the three phase a.c power system ?

2 Answers   AIIMS,

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25 kva load,

1 Answers   Voltas,

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what is sevice settings for mccb?How can be it setted?

0 Answers   Bhel, Minda,

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As we know,charged clouds(from which lightning stroke initiates)may be charged with either +ve charge or -ve charge. Now say one cluster of cloude is fully charged with +ve charge & another cluster is fully charged with -ve charge. In the sky these two cluster of charged clouds have come in such a distance that, if they come clouser by some few yeards then the lightning discharge will take place between these two cluster of clouds. Under such a situation an Aircraft came inbetween. what happend??

5 Answers  

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why near the transformers, the Jelly(small white colored rocks)are poured.and what are conditions for that?

3 Answers  

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What is the suitable rating of MCB for 1.5 Ton A.C and why? 1Ton= how many amperes?

5 Answers   BARC,

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there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

0 Answers  

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What is meant by impedance? difference between high & low impedance ?

0 Answers  

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what is the name for a meter/tester to measure the paint quality in electrical panel or wall?

1 Answers  

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What difference between ref protection and differential protection ?

0 Answers   EPC, INEL Power System Engineers,

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what are the major difference between 3phase 3wire and 3phase 4wire trivector meter?

2 Answers   L&T, NTPC,

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Why is DC use instead of AC for protection and control circuits?

4 Answers  

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