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| 如果瀏覽伊莉時速度太慢或無法連接,可以使用其他分流瀏覽伊莉,www01.eyny.com(02,03)。 I'm not quite experienced in experimental activities......
And I'm not quite sure about the requirements in your school, so I can only provide the following details:
1. design of a home-made DC motor: Please refer to my reply on your another post
2. design of an AC motor: Instead of a pair of permanent magnet, a coil is used instead. When connected to the same source as the motor does, the new coil will produce an alternating magnetic field so that the direction of net torque will remain the same even after the direction of current in the source changes. ... |
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