作业帮 > 英语 > 作业

is there anybody knows the formula of Power Factor?

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/21 20:34:56
is there anybody knows the formula of Power Factor?
urgent . . tq vmuch
PF
=cosθ
=(U dot I)/|UI|
=cos[arg(ū/ī)]
where 'dot' means dot product of two vectors,and ū and ī are the equivalent complex value of voltage and current,respectively,and θ is the angle between the U and I vectors.