Answer / guest

In 1827 one scientist of German Named Gorge Simon Ohm discover that there is definate relation between voltage,current and resistance in DC circuit thus in other hand we know as ohm's law. This law state that in a closed ciruit the strength of current is dirct proportional to voltage ............so and so.

how we can check the CT & VT?

2 Answers  

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what is meant by loss of field in a DC motor? how a universal motor works?

0 Answers  

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What do you mean by a voltage transformer?

0 Answers  

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How can we checked Killo Watts of Motor & Alternator?

0 Answers  

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We have 250 KVAR cacitor bank & our average load is 200kva but our power factor is average 0.66 how can we maintane it? how can we balance our load?

4 Answers  

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What is the formula to find out two phase active & reactive power

0 Answers   Areva,

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How are load losses and no-load losses measured at site in a DG set?

0 Answers  

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how to choose the cable size for 100A(is there any formula please update)

6 Answers  

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To attain a powerfactor more than .95, how much kvr should we use for 100 HP of current

4 Answers   Bhel, Scooters India,

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There is 3phase power cable from 1 point to the other point which is 100m away. Two point equipped with power meter and recorded 1st point is 205kW while the 2nd is 202kW and each phase average carry 400amps. To calculate the resistance of the 3phase power cable, is the formula using will be P=I2R?

3 Answers  

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What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side

0 Answers   CEB,

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How many kinds of E.L.C.B and how to work E.L.C.B

0 Answers   Accenture,

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