For 7.5HP motor 2880rpm 415VAC Connected with Pressurisation Fan we used Star Delta Startor why not we use DOL startor

2 Answers   DLF,

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Instead of single phase(220), if apply Phase to phase supply (eg: for lighting fixture). what will be the power formula? what will be the volt and current value? please explain me with some example.

1 Answers  

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where the protection CT in neutral of transformer be located, before bifurcation or after bifurcation and why.

2 Answers  

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Whether the vacuum contactor requires Short circuit protection?If No,why?

0 Answers   Reliance,

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take 100kva DTR( delta/wye ), what ll happen if we connect 11kv to LT side instead of connecting to HT side? will the DTR behave as a step up transformer or something else????

0 Answers  

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how to find under ground cable fault ??? if our cable size is 95*4 then what will load capacity with far mull

2 Answers   Imdad,

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As a electrical engineer.. what are the basic norms should follow in transformer oil testing.. 1.What is the Electrode type? 2.How long time you will give for oil testing?

0 Answers   NAL,

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what is breaking capacity

1 Answers  

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inductance and capacitance may result in periodic reversals of the direction of energy flow,how???

1 Answers  

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Parts of machine and their discription in details with suitable photo

0 Answers  

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what happens when series resonance occurs?

0 Answers  

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why are using bus ducts ? why not using cables

12 Answers  

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