A.60° B.90° C.120° D.150°
A.起動轉(zhuǎn)矩越大 B.起動電流越大 C.起動轉(zhuǎn)矩越小 D.功率因數(shù)越低
A.1.5~1.8 B.2~2.5 C.2.5~3 D.3~5