題目列表(包括答案和解析)
某交流發(fā)電機的感應(yīng)電動勢與時間的關(guān)系,如圖A-4所示.如果其他條件不變,僅使線圈的轉(zhuǎn)速加倍,則交流電動勢的最大值和周期分別變?yōu)椋ǎ?BR>A.400V,0.02s B.200V,0.02s
C.400V,0.08s D.400V,0.08s
圖
A.400 V,0.02 s B.200 V,0.02 s C.400 V,0.04 s D.400 V,0.08 s
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