why our indian system choose the 230 volt for single phase&415 for 3-phase voltage,in forign side 110 volt is used what is the difference

4 Answers   Jindal,

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How much pole motor can be desion for 415 volt ,50 hz.Power supply. in pratical condition . Prakash veer singh

5 Answers  

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why transformer is conneted to dc for polarity test.it doesnt work in dc?

1 Answers   ABB, KVPY,

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Dear sir,We have a 7.5hp motor,it was running smoothly and suddenly one winding is carring more current then others(r=6.5,y=6.3,b=10)..whts wrong with tis...?

5 Answers   Hindustan Motors,

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what is the main difference between simplex RTD and Duplex RTD?

6 Answers  

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what is JE exam?

0 Answers  

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why the autotransformer burnt while stating the pumpmotor?, In starter and motor there was no abnormality.

4 Answers  

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difference b/w bus bar and tie line?if possible explain with eg:

2 Answers  

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Re: can you give main difference between ELCB 2pole And RCCB 2pole? And how this devices operated?

4 Answers  

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Suppose am having the PF value .8, so how can we say that is it lagging or leading?

11 Answers   Bhel,

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In a star to star transformer can we use a common neutral for both star connected primary and secondary

1 Answers  

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What is meant by transformer, why it should be used, with out that equipment what happens if we transformed the supply?

12 Answers   Bhel,

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