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2015/ 05/ 28/ 09:01:45 9063 ȸ
1.켱 ˾ƾ . Ͽ ΰϸ а Ȱ մϴ. . ϰ ƴ (ͳ ̵ַ )̰ų 뷮(ܵ, ) а ߻մϴ. ܵ Ͽ ߰ ϸ и 帣 ° ư ʽϴ.(, 90 ߳ COS 90 = 0 Ǿ 0 ) ̷ ߳ ҺǴ ȿ̶ մϴ. 뷮 Բ ߿ϱ ˻. Ѹ ȿ ° ȿ ϸ ˴ϴ. (ȿ)^2+(ȿ)^2 = ǻ Ǵµ = ȿ / ǻ Ǵ . ⼭ ϶ ǻ = ȿ Ǿ 1 . 1 ȿ ٰ Ҽ . 2. 3 ϶ P = 3 x E x I x COS P COS = ------------- 3 x E x I Ŀ ϸ ˴ϴ. P : (W) E : (V) I : (A) 3 : 1.732 ¼ġ 100 ϸ ˴ϴ. ܻ 3 ˴ϴ. ()̶ ΰ?. ϴ 1) ׸ а ȸο 帣 ˸ ٷ ֽϴ k1 յ ȸ COS k1. ˷ Ƿν Ͽ 2) ǻ° ȿ ˸ , Ŀ ǻ ׽ͱ ũͷ ϸ ȿ ° ( ·谡 ƴ) ̿Ͽ . 3) ϸ ٷ . 밳 谡 ġǾ . COS 迡 *ι͸ Ͽ Ÿ 1 Ƿ ɼ ֽ

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