已知I1=4∠30°A,I2=3∠60°A,求I1+I2等于多少
答案:解:用相量加法必须先把相量换成代数形式: ∴I1=4∠30°=4Cos30°+j4Sin30°=3.46+j2(A) I2=3∠60°=3Cos60°+j3Sin60°=1.5+j2.6(A)j42.6° I1+I2=3.46+j2+1.5+j2.6=5+j4.6=6.8e
免费的网站请分享给朋友吧