Answer / andrew d&

I/VxR
where I = CURRENT, v = VOLTAGE and R = resistance.

Answer / thanigaivel

p=v*icos@
i=p/v
p=power-watts
v=voltage-volts
i=current-amps
cos@-power factor

Answer / raj

If We want to calculate the current of a circuit we should know at last two factors. The basic formula from OHM's law is

I= V/R
and also I= W/V
in 1phase power factor is neglected but in three phase it should be consider

how system voltage affect the power factor or vice-versa.

4 Answers  

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I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?

0 Answers  

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What is the effect of positive feedback on stability of the system?

0 Answers  

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How can we calculate the fault level of the distribution system knowing the percentage impedance of transformer & subsequent equipments.

14 Answers  

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what is the fullform of mccb

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How can w select the cable size for different rating load & also waht r factors affecting the during selection of cable?

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If only R Phase is connected in 2 pole elcb, n is not connected than it will work or not in ground fault.

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What is the principle of Excitation.

1 Answers  

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what is lowest system voltage?

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what is the function of short circuit maintenance ct and droop ct.

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What is the formula to find out cross sectional area of cable for certain current rating?

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what is the mean of"turbo" in turbo alternator???

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