决定性
发表于 2025-3-30 08:22:50
Electricity,pletely neutralise one another’s effects then the amounts of each are said to be equal. Since matter in its normal state does not exhibit any state of electrification it follows that the amounts of the two kinds of electricity in it are equal.
nettle
发表于 2025-3-30 15:44:49
Three-Phase Working. Rotating Magnetic Fields,of induced e.m.f.s the arrows indicate the positive direction of the e.m.f. for each particular phase. If all three phases were kept separate a six-conductor line between source and load would be necessary. By interconnecting the phases the number can be reduced to three; in one special case four. There are two methods.
Impugn
发表于 2025-3-30 18:00:40
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predict
发表于 2025-3-30 22:30:21
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Arrhythmia
发表于 2025-3-31 01:07:18
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Conduit
发表于 2025-3-31 05:58:00
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Palliation
发表于 2025-3-31 09:31:50
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卵石
发表于 2025-3-31 17:15:15
https://doi.org/10.1007/978-3-642-80801-2he first consideration that an electric machine must consist essentially of two parts, namely that which produces the magnetic field, and that which carries the conductors in which the e.m.f.s are induced. It is obvious that there must be relative motion between these two parts.
死亡
发表于 2025-3-31 20:19:05
The Transformer,x, the flux which links with one winding only, is very small. To ensure such close coupling the windings are arranged with their coils in close physical association and they are wound on a magnetic core.
LAITY
发表于 2025-3-31 23:15:22
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