how many types of accuracy class in ct? what is meaning of 5p20?

1 Answers  

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friends., why celling fan rotate cockwise direction and wall fan anticickwise direction ?

3 Answers  

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What is the different between digital phase converter and ordinary phase converter?

0 Answers  

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How Can I calculate for the photometrics requirements for a street lighting? Data given are: 45 units of 6 meter light pole with 150 watts metal halide lamp, 220 volts and installed in a promenade area.

0 Answers  

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in a delta-star with neutral grounding on star side what will happen if one star limb  got opened at star point

1 Answers   NTPC,

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I AM DOIN MY 3RD YEAR IN ELECTRICAL ELECTRONICS. PLEASE SUGGEST WHAT DO I DO NEXT AFTER MY B.E? AND I WANT TO GET INTO ANY PSU IS DER ANY EXAMS PLASE SUGGEST EVEN THAT.

3 Answers  

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As we know multiplicity factor derivation equation is as below MF = main c t ratio / main p t ratio * meter c t ratio / meter p t ratio * meter dial constant Where in digital meters for HT kwh import export now a days meter constant are calibrated already which is 1 So my question is For HT 11kv 110 v line values are as below Main c t and p t ratio are 11000 v and 110 v and 20/5 means 20 amp and 5 amp Now meter values are 11000/√3/110√3 and primary and secondary amp are displayed as -/5 amp on kwh meter so what will be the MF for this meter ?

1 Answers   NEPC,

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How we can test the Smoke Detectors????

4 Answers   Emerson,

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how many wires need to be bring to the motor if its star delta starter

5 Answers  

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how could we findout the lightning arrester failed or not in live circuit? Is there any instrument to measure the high voltage at the time of sky lighting?

1 Answers  

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Actually why the transformers are rated in KVA.?

4 Answers   BSL, Engineering,

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Find defination of KVA convert in to KW.

4 Answers   ABB,

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