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计算:()-1-sin30°-(π-3.14)0+|1-|

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u1滞后u2  u1超前u2  u1、u2同相  
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  
20, 30A  20A, 21. 2A  28. 28A, 30A  28. 28A, 21. 2A  
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°)  

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