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Draw each of the three phasors

Break each down to a real and a reactive component

Add the real components

Add the reactive components

Draw the phasor from the the sum of real and reactive components

The length of the phasor gives the total current

The angle of the phasor gives the power factor

-- 

Dan Hollands
1120 S Creek Dr
Webster NY 14580
585-872-2606
QuickScore@USSailing.net
www.QuickScoreRace.com


<jan@janhurst.com> wrote in message 
news:42948abb$0$28838$5a62ac22@per-qv1-newsreader-01.iinet.net.au...
> Hello,
>
> I am studying an introductory electronics course and have been given the 
> following problem:
>
> A small factory has the following loads operating from the 240Vrms 50Hz 
> supply
> a) Forty 50 watts incandescent lamps with unity power factor
> b) Thirty-five 40 watts fluorescent lamps with a lagging power factor of 
> 0.9
> c) One 2400 watts air conditioning system with a lagging power factor of 
> 0.65.
>
> I am asked to draw the complete phasor diagram and determine the total 
> peak current drawn and overall power factor of the factory.
>
> I'm a little stuck :( I have some phasor diagrams put together which I am 
> a little unsure of, but I don't really know how to determine peak current 
> from this, can anyone shed some light or point me in the direction of some 
> material to explain this sort of problem? I've been digging through a 
> number of text books and am not really progressing.
>
> Thank you
>
> Jan