EE 381 Test One Formulas

# EE 381 Test One Formulas - * 1 2 ) cos( ) ( 3 ph Ph ph ph...

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EE 381 Test One Formulas Single and 3 Phase Circuits Wye for I I I Vph Z I V P V V volts V AND V V THEN V FOR s V between diff phase equal phasors of magnitudes Set Balanced phasor a not but complex S negative Q positive P Cciruit R positive Q positive P Lcircuit R s VAR Q Watts P Amperes Volt S VI Q VI P jQ P S phasors VI S C X L X f volts t V t v phase line phase Y line line Ph ca bc ab cn bn an C L v m - - - = - - = = = - = = + = = - = = - - - = = - - - - = = - - - - - = = - = = - = = = + = = = = = + = θ ϖ π φ cos 3 180 2 . 173 60 2 . 173 60 2 . 173 30 30 100 3 150 100 90 100 30 100 120 _ ' _ _ _ _ _ _ _ _ _ _ ' sin cos ) (

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Unformatted text preview: * 1 2 ) cos( ) ( 3 ph Ph ph ph ph ph ph c b a Y delta S S I jV I V S Zy Vcn I Zy Vbn I Zy Van I WYE Z Z THEN ⋅ = + = = = = ⋅ = 3 sin cos 3 3 θ Magnetic Circuits 7 10 4 _ _-⋅ = =--=--= ℑ--= = π μ φ o o r flux total BA mmf NI density flux H B l NI H...
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## This note was uploaded on 04/28/2008 for the course EE 381 taught by Professor Rahman during the Spring '08 term at S. Alabama.

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EE 381 Test One Formulas - * 1 2 ) cos( ) ( 3 ph Ph ph ph...

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