T tinhnho New Member Nov 16, 2004 #1 hi everyone Given V1 = -.41800 - .51918j and V2 = -0.27126 - .35264j The question is: " Does V1 lead or lag V2 ? " The answer in the book is : Delta_phi = -1.27 degree -- if possitive V1 leads. ------------ My question is how do i know that V1 lead or lag V2 ? Thanks everyone
hi everyone Given V1 = -.41800 - .51918j and V2 = -0.27126 - .35264j The question is: " Does V1 lead or lag V2 ? " The answer in the book is : Delta_phi = -1.27 degree -- if possitive V1 leads. ------------ My question is how do i know that V1 lead or lag V2 ? Thanks everyone
mahinda jayasinghe New Member Nov 16, 2004 #2 Calculate phase angles. for v1 P'angle=tan -1 .519/.418 for V2 = tan-1 .352/.271. All situated on 3rd qau as all real and img numbers are negative. Then two phase angles are for v1 51.15 and for v2 52.4. It shows that v2 is leading by 1.25 degree(52.4-51.15) Draw it on graph paper and try tp do some calculation s.
Calculate phase angles. for v1 P'angle=tan -1 .519/.418 for V2 = tan-1 .352/.271. All situated on 3rd qau as all real and img numbers are negative. Then two phase angles are for v1 51.15 and for v2 52.4. It shows that v2 is leading by 1.25 degree(52.4-51.15) Draw it on graph paper and try tp do some calculation s.
riad New Member Nov 17, 2004 #3 its Riad: basic equations of the phasor: ex: V=a+jb in phasor: V=root of (a2+b2)<tan-1 (b/a) the part after (<) gives you the angle of V
its Riad: basic equations of the phasor: ex: V=a+jb in phasor: V=root of (a2+b2)<tan-1 (b/a) the part after (<) gives you the angle of V