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i=10Sin(314t+30°)A i=10Sin(314t-30°)A i=10 2Sin(314t-30°)A i=10 2Sin(50t+30°)A
20,30A 20A,21.2A 28.28A,30A 28.28,21.2A
e=220sin(314t+30°) e=320sin(314t+30°) e=220sin(314t-30°) e=220
210°,超前 210°,滞后 30°,超前 30°,滞后
e=220sin(314t+30 °) e=220 √2sin(314t+30 °) e=220sin(314t -30°) e=220 √2sin(314t -30°)
u1比u2前30° u1比u2滞后30° u1比u2超前90° 不判断相位差
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e =220sin(314 t+30°) e =220sin(314t- 0°) e =-220sin(314 t+30 °) e =-220sin(314t-30 °)
u=220sin(314t+30º) u=220sin(314t-30º) u=220√2sin(314t+30º) u=220√2sin(314t-30º)
e=220sin(314t+30°) e=220sin(314t-30°) e=-220sin(314t+30°) e=-220sin(314t-30°)
2sin314t 2sin(314t+30) 2sin(314t-30) 2sin(314t+60)