Answer / sachin balekar

There is one course from delhi callled beurau of energy
efficiency.By completeing this couse you can conduct energy
audit in various companies. The details atre availabe on
website go to google search & type buerau of energy
efficiency

Answer / chezhian

NPTI national power training istiuite for power plant training
in neyveli delhi nagpur and bangolur

what happens if commutator is removed in an dc machine?

3 Answers  

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two or more transformer are working in parallal,one is out of order,what are you doing?

7 Answers   wbsedcl,

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How loading get increased in generator not the speed, while we increasing steam to turbine.

2 Answers  

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in basic 2 phase will short means tripping the power but spot welding 2 phase shorting but not tripping it will welded why.....(Q)

0 Answers  

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what is current actully?significance of current...not rate of change of flow.....

3 Answers  

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How to select cable the size, what is the parameters use and what is the formulas use for this cable size calculation?

0 Answers  

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What is different bewteen low or high impedance busbar protection scheme

0 Answers  

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Which theory is used in the analysis of salient pole rotor synchronous machines? Who is credited for this developement? Could the same theory be used for cylindrical rotor synchronous machines?

1 Answers  

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does magnetic interlocking take place in an induction motor ?

2 Answers  

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AC SUPPLY HAVING 230 V FREQUENCY REDUCED ZERO IF MEN TACUCHES THE SUPPLY WEATHER HE GETS SHOCK OR NOT?

8 Answers  

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difference between shunt coil and tripping coil

8 Answers   GE,

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Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1.  H1-H2 = H2-H3 H3-H1 2.  H2-H3 = H3-H1 H1-H2 3.  H3-H1 = H1-H2 H2-H3 For the LV side also: 4.  X1-X0 = X2-X0 X3-X0 5.  X2-X0 = X3-X0 X1-X0 6.  X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0  H2-H0  H3-H0    X0-X1  X0-X2  X0-X3 128.0  119.9  7.2      29.2   13.3   15.8 70.7   128.4  59.2     23.4   22.0   3.6 7.2    120.1  128.1    13.4   29.3   15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?

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