different b/w counter poise and ground wire

1 Answers   L&T, TCS,

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The error in a single phase energy meter where pressure coil lags behind applied voltage by 88 degrees and pf is 1) upf 2).5lag

1 Answers   GATE,

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why we use REF and Differential Protection in one transformers?my doubt is both protections are operated in internal fault only.why we want to use 2 protections?please clarify.

7 Answers  

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How the speed of synchronous motor changes with the variation of load?

1 Answers  

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How To Convert Apparent Into Real Power Without Knowing Reactive Power?

0 Answers  

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What is thef ormula to calculate the rating of a capacitor for a single phase motor

2 Answers  

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why shunt capacitor is connected

1 Answers  

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how to calculate the step resistance for slipring induction motor,how you deside the no of step for that?

0 Answers   ABB, Visa,

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why transformers are sometimes kept on concrete benches..?

2 Answers  

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what is the path of thunderlightening? once both a buffalo and a person were standing 5m apart but lightening hit and killed buffalo not person?

0 Answers  

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A.V.R maintains the voltage of a generator when it is in island mode but when the generator is synchronised with grid it maintenance the P.F,how it happens please any body explain it in detail.

2 Answers   TATA,

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What is current and voltage?

5 Answers  

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