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SAT, 21.06.2021 04:40 ant5784tgi

BT: Cho i1 (t) = 100sin(100t + 400 ) (A), i2 (t) = 200sin(100t – 200 ) (A) a. Viết biểu diễn phức của hai dòng điện trên ; dòng điện nào nhanh pha hơn và nhanh hơn bao nhiêu độ ?
b. Giả thiết dòng i1 chạy qua tổng trở Z= 10 + 5i (Ω), tính công suất phức trên tổng trở Z ? c. Giả thiết điện áp đặt vào mạch có dòng điện i2 là u2 (t) = 300sin(100t – 300 ) (V), hỏi mạch mang tính dung hay tính cảm ? Vì sao ? Xác định công suất S, P,Q của mạch ?

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BT: Cho i1 (t) = 100sin(100t + 400 ) (A), i2 (t) = 200sin(100t – 200 ) (A) a. Viết biểu diễn phức c...
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