A.延時閉合的動合觸點(diǎn) B.瞬動動合觸點(diǎn) C.瞬動閉合延時斷開的動合觸點(diǎn) D.延時閉合瞬時斷開的動合觸點(diǎn)
A.4~7倍B.2~2.5倍C.10~20倍D.5~6倍
A.轉(zhuǎn)子回路串入電阻 B.定子任意兩相繞組進(jìn)行反接 C.轉(zhuǎn)子繞組進(jìn)行反接 D.定子繞組送入直流電