• 2022-05-30
    与电流相量(4+j3)A对应的正弦电流可写作i =( )。
    A: 5 sin(wt+53.1°) A
    B: 7.07sin(wt+36.9°)A
    C: 7.07sin(wt+53.1°)A
    D: 5sin(wt+36.9°)A
  • B

    内容

    • 0

      与电流相量[img=80x27]18032fd4cf9b786.png[/img]对应的正弦电流可写作 i =( ) A: 5sin(wt+53.1°) B: [img=34x26]18032fd4d87f162.png[/img]sin(wt+36.9°) C: 5sin(wt+36.9°) D: [img=34x26]18032fd4d87f162.png[/img]sin(wt+53.1°)

    • 1

      与电流相量[img=80x27]1803a297f836a3e.png[/img]对应的正弦电流可写作 i =( ) A: 5sin(wt+53.1°) B: [img=34x26]1803a2980061b79.png[/img]sin(wt+36.9°) C: 5sin(wt+36.9°) D: [img=34x26]1803a2980061b79.png[/img]sin(wt+53.1°)

    • 2

      与电流相量[img=68x24]17da7038ab7a425.png[/img]对应的正弦电流可写作i =( )。 未知类型:{'options': ['5cos(wt+36.9°)A', '17da7038c0643b3.pngcos(wt+53.1°)A', '17da7038d3f5707.pngcos(wt+36.9°)A', '5cos(wt+53.1°)A'], 'type': 102}

    • 3

      【多选题】与u=5 sin(314t+36.9°)V对应的相量为 A. (4+j3)A B. (4-j3)A C. 5∠36.9°A D. (3+j4)A

    • 4

      f(t)=sin(wt)的象函数为