Re: [考題] 機械力學:－2016徵求年菜推薦網路訂購最紅的商家.年菜訂購?台北年菜外送餐廳推薦(年菜)?年菜.今年不想做年菜推薦,網路宅配哪一家好?

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批踢踢實業坊 Examination 板

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Re: [考題] 機械力學

Sep 13th 2013, 02:11, by yachien04

作者yachien04 (發票中惹!)

看板Examination

標題Re: [考題] 機械力學

時間Fri Sep 13 02:11:40 2013

※ 引述《chayiman (嘉義男人)》之銘言： : 出處:96年中油雇員 : 有一圓盤離合器,外徑為12cm,內徑為8cm,若u=0.3 : 軸向壓力為2000N,若轉速為628rpm,則傳遞的功率約為多少? : (A)1kW (B)2kW (C)3kW (D)4kW : 我是用T=761.2*P.S/N 跟F=2T/uD下去算 : 但是都沒上述的答案阿是單位轉換的問題我沒轉 : 還是我公式本來就用錯了?? 平均直徑為 (12+8)/2=10cm=0.1m 直接代入公式 F*拍*D*u*N/60 => 2000*3.14*0.1*0.3*628/60=1971w=1.97kw 答案b -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 111.255.142.171

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