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stephen88
Oct 29, 2011, 09:30 AM
Need help on answering this question

Stratmando
Oct 29, 2011, 10:29 AM
Try:



Electricity meter - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Electricity_meter)

And:

http://nptel.iitm.ac.in/courses/Webcourse-contents/IIT%20Kharagpur/Basic%20Electrical%20Technology/pdf/L-44(GDR)(ET)%20((EE)NPTEL).pdf

sinnadurai
Nov 6, 2011, 07:36 AM
I think I already answered this sometime back. The meter has two coils(current and voltage. The induction disc moves freely in the field provided by the voltage coil at a speed proportional to the current or the load,thus rotating the counter which registers the reading. Nowadays they have digital meters too.

dileeprbanger
Aug 13, 2012, 06:25 AM
How electrical energy is measured in dc and ac circuits?

sinnadurai
Aug 13, 2012, 09:24 PM
how electrical energy is measured in dc and ac circuits?
In dc power is Vx I but in ac it is Vx I x pf.To get energy multiply by hrs.The kvh or energy meter is made to measure kwh. In DC there will be no kVA but in ac you get KVA,KW & KVAr.