what is the working principle of tube light?

2 Answers  

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why do you add the load short circuit impedance when considering short circuit amperage. It seems that you should only consider supply. If you need to consider loads and you don't know what loads are to be added , what would be a good sub-transient reactance rating for the loads?

0 Answers  

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what is the common earth

0 Answers  

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how do you tell if a avalanche button diode is a p or an

1 Answers  

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What voltage is used in Directional earth fault relay? and why?

5 Answers   L&T,

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What are the point of a single core cable to be earthed?

2 Answers   Alfanar, Jindal,

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Is LV shorted in magnettic balance test?If yes why?

2 Answers   Hindalco,

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Since phi is the angular displacement between V & I, then why we use phi in power triangle ie. when showing active, reactive & apperent power in triangular manner & if it is ok then where is V & I in the triangle.

1 Answers  

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without any theoretical calculations, can u approximately tell the current rating of a motor(above 30hp)working at 415VAC.

7 Answers  

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when ur using single phase type of load for a 3.5core power cable .Why neutral is .5 and how much current in the neutral if we consider neutral as a reverse path for three phases.

2 Answers  

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How to power regulated by AVR in Alternator?

3 Answers   EPGL,

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it is difficult to interrupt a capacitive current because (a)it has a leading power factor (b)current magnitude is very small (c)the restriking voltage can be high (d)stored energy in the capacitor is high

2 Answers   DGVCL Dakshin Gujarat Vij Company, MGVCL, UGVCL Uttar Gujarat Vij Company Ltd,

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