u=-100sin(6πt+10°)V超前i=5cos(6πt-15°)A的相位差是( ) A.25°B.95°C.115°
u=-100sin(6πt+10°)V超前i=5cos(6πt-15°)A的相位差是( )
A.25°
B.95°
C.115°
相关考题:
u=-100sin(6πt+10°)V,=5cos(6πt-15°)下列说法正确的为A.相位差为25°B.相位差为115°C.电压最大值为100VD.电压最大值为负100VE.电流有效值为5A
u(t)=-100sin(6πt+10°)V的相位超前i(t)=5cos(6πt-15°)A的相位多少?A.25°B.95°C.115°D.-245°