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2019-04-15View Original

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本帖最后由 3983596_FPPZ 于 2019-4-15 09:42 编辑 bk12.jpg1、两个题回答全错给予积极参与+2财富，回答一错一对给予+5财富，回答全对给予+8财富。2、如只回复一个答案，除非明确了是哪道题的答案，正确+5财富，错误+2财富，否则一律按积极参与+2财富执行。3、回答奖励每人限一次。4、每个回复限评分一人次。5、回复后可见答案及答案解释。6、奖励在48小时内有效，逾期不予奖励。学*又拿奖，天天来逛逛一离心泵流量230T/h，介质比重1.05，扬程36m，运行点效率73%，转速2950，则泵的轴功率为（）KW，配带电机功率为（）KW。答案：轴功率=230*36/（3.6*102*0.73）=30.9KW；37KW

Reply #22019-04-15

32.5KW 37KW

Reply #32019-04-15

1、31KW；2、35KW。

Reply #42019-04-15

32.45kw ; 37kw。

Reply #52019-04-15

轴功率=流量×扬程×9.81×介质比重/3600×泵效率 =230*36*9.81*1.05/3600*0.73 =32.45KW

Reply #62019-04-15

30.9kw,37kw

Reply #72019-04-15

230是质量流量，所以比重就不用乘了

Reply #82019-04-15

本帖最后由独孤凌云于 2019-4-15 11:02 编辑 230*36*9.81*1.05/3600*73%=32.45 37

Reply #92019-04-15

30.9KW,37KW

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