有一正弦交流电压,表达式为u=311sin(314t–四分之拍)V求该交流电压的角频率,频率,有效

2024-11-15 23:49:13
推荐回答(1个)
回答1:

ω = 314 rad/s
f = ω / 2π = 50 Hz
U = Um / √2 = 311 / √2 = 220 V
Um = 311 V
φ = - 45°