hello
im having a hard time with my tunded circuits assignment. my tutor has decided to copy an assignment from another tutor who did this assignment last year, all the same questions. that tutor has left and now my tutor is using a copy of a previous students coursework to find the answers as he is unsure about how to complete the assignment. i have been struggling with this course since starting and thought that i would like to get ahead and study when im not at college. i handed in my coursework last week thinking it was ok. now i find i have missed things out. my tutor didn't really do a good job of explaining it to me and im a little agitated by it. i would like to lodge a complaint about him but i think that may make things worse.
i have three branches.
i have to calculate the phase angle
then i have to find the j notation
im not sure how to find the phase angle
for the first branch (cap 1uf, res 5600) i got the impedance z sqrt R^2+Xc^2,
so 5600^2+(-318.3^2) = 5590.94671
then from what my tutor has told me, (using another students coursework!)
i have to use voltage over impedance, so im using 7.07vrms over 5590.94761 to get the 1.26mA in branch one. so this is correct so far.
then i have to find the phase angle, he showed me the previous students coursework(though he admitted that some of it was wrong)
the formula for phase angle was cos^-1 R/Z which i did , i cant get an answer out of my calculator. i asked for help and by this point he was talking to me as though i should know how to do this. which i didn't really find helpful.
any help or a push in the right direction would be great
thanks
simon
im having a hard time with my tunded circuits assignment. my tutor has decided to copy an assignment from another tutor who did this assignment last year, all the same questions. that tutor has left and now my tutor is using a copy of a previous students coursework to find the answers as he is unsure about how to complete the assignment. i have been struggling with this course since starting and thought that i would like to get ahead and study when im not at college. i handed in my coursework last week thinking it was ok. now i find i have missed things out. my tutor didn't really do a good job of explaining it to me and im a little agitated by it. i would like to lodge a complaint about him but i think that may make things worse.
i have three branches.
i have to calculate the phase angle
then i have to find the j notation
im not sure how to find the phase angle
for the first branch (cap 1uf, res 5600) i got the impedance z sqrt R^2+Xc^2,
so 5600^2+(-318.3^2) = 5590.94671
then from what my tutor has told me, (using another students coursework!)
i have to use voltage over impedance, so im using 7.07vrms over 5590.94761 to get the 1.26mA in branch one. so this is correct so far.
then i have to find the phase angle, he showed me the previous students coursework(though he admitted that some of it was wrong)
the formula for phase angle was cos^-1 R/Z which i did , i cant get an answer out of my calculator. i asked for help and by this point he was talking to me as though i should know how to do this. which i didn't really find helpful.
any help or a push in the right direction would be great
thanks
simon