你可能感興趣的試題

A.切除高壓電
B.切除動(dòng)力制動(dòng)
C.準(zhǔn)備二次送電
D.準(zhǔn)備加速
E.準(zhǔn)備減速

A.對(duì)稱(chēng)三相定子繞組中通入對(duì)稱(chēng)三相正弦交流電，便產(chǎn)生旋轉(zhuǎn)磁場(chǎng)
B.旋轉(zhuǎn)磁場(chǎng)切割轉(zhuǎn)子導(dǎo)體，便產(chǎn)生感應(yīng)電動(dòng)勢(shì)和感應(yīng)電流
C.定子和轉(zhuǎn)子便產(chǎn)生相對(duì)運(yùn)動(dòng)
D.感應(yīng)電流一旦產(chǎn)生，便受到旋轉(zhuǎn)磁場(chǎng)的作用，形成電磁轉(zhuǎn)矩，轉(zhuǎn)子便沿著旋轉(zhuǎn)磁場(chǎng)的轉(zhuǎn)向轉(zhuǎn)動(dòng)起來(lái)
E.感應(yīng)電流一旦產(chǎn)生，便受到旋轉(zhuǎn)磁場(chǎng)的作用，形成機(jī)械轉(zhuǎn)矩，轉(zhuǎn)子便沿著旋轉(zhuǎn)磁場(chǎng)的轉(zhuǎn)向轉(zhuǎn)動(dòng)起來(lái)