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[主观题]
已知RLC串联电路的端口电压和电流为U(t)=[100cos314πt+50cos(942πt-30°)]V,i(t)=[10cos314wt+1.755cos(942t+θ3
已知RLC串联电路的端口电压和电流为U(t)=[100cos314πt+50cos(942πt-30°)]V,i(t)=[10cos314wt+1.755cos(942t+θ3)]A,求:(1)电路参数R、L、C;(2)θ3;(3)电路的平均功率P。
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已知RLC串联电路的端口电压和电流为U(t)=[100cos314πt+50cos(942πt-30°)]V,i(t)=[10cos314wt+1.755cos(942t+θ3)]A,求:(1)电路参数R、L、C;(2)θ3;(3)电路的平均功率P。
A.XL=XC,总阻抗|Z|=R最小
B.电源电压U=UR
C.电流i=U/R达最大值
D.电源电压U=UR+UL+UC
A.电阻的电压为10V
B.电路发生串联谐振
C.电路的功率因数为1
D.电阻的电压为12V
A.1
B.0
C.0.33
D.0.8