A.轉(zhuǎn)子軸B.滑環(huán)C.搭鐵D.勵(lì)磁繞組
A.續(xù)流二極管正常B.續(xù)流二極管短路C.續(xù)流二極管斷路D.很容易造成大功率三極管損壞
A.3~5倍B.4~8倍C.10~15倍D.15~20倍