... di6n nhd m6y di6n MOn thi: Thdi gian lirm bAi :180 phrit ThiSinh kh6ng sfidr,rngtai ti6u Dd thi sd: Luu y : Thf sinh lAm c6c phdn A, B, C, D tr6n cdc to gidy thi khdc CAO o€ rnl sd: ol Ciu ... U1/U2 =7200/480 V, co cdc th6ng sd tfnn bing ohms: R ,cao dp = 3,06 R,h4 dp = 0,014 X ,cao 6p = 6,05 X,ha Ap = 0,027 XM, cao eip = 17 809 RM, cao 6p = 71 400 Mdy biSn dp cung cdp diQn cho tAi ti6u ... trl phia cao 6p (1 d) b/ tdng trd nhin vdo mdy bidn dp trr phia cao 6p (k€i cA tdng trd c0a tAi) (1 d) c/ di6n dp phia cao dp c0a mdy bidn dp (1 d) d/tdng tr6 nhinvdo mdy bidn dp ttl phia cao dp...