what is difference between co-generation and captive power plant?

3 Answers   TATA,

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What is the thumb rule for calculating the P.F correction Capacitor?? Say for 100 hp motor how much micro farad Capacitor is needed .... Thumb rule so quick answer wanted

9 Answers   Bhel, Dubai Group,

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Name quantities which are not transformed in the tranformer.

3 Answers  

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why any inductive load need free wheeling diode?

4 Answers   Essar,

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234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,

0 Answers   Jomel,

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What is the need for a controller?

0 Answers  

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why most of junction box vendors providing T5/T6 Temp class jb's for T3 area any special reason?

0 Answers  

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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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we have 3.5MVA-11/6KV transformer. how can we calculate earth fault current and NGR calculation?

0 Answers   IGC,

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1000 W bulb takes 4.16 Amps at 240 volt then what will be the KWH & if i am using 1000 W bulb at 180 Volt the amps will be 5.55 then what will be KWH????????????????

2 Answers  

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how did the differential relay work to protect the power transformer

4 Answers  

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what about GD square and its important for motor design?

0 Answers   Innovis, MNC,

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