考试
1970-01-01 08:00:00

已知某正弦电压的频率f=50Hz,初相角Ψ=30°,在t=0

题目描述

已知某正弦电压的频率f=50Hz,初相角Ψ=30°,在t=0.02s时瞬时值u(0.02)=100V,则其瞬时表达式为

答案解析

[imgclass="ans-formula-moudle"data="%7B%22formula%22%3A%22u%3D200sin%5C%5Cleft%28100%5C%5Cpi%20t+30%5E%7B%5C%5Ccirc%7D%5C%5Cright%29V%22%2C%22id%22%3A321865%7D"src="/ananas/latex/p/321865">

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