【Daily Question No. 119】April 29, 2018

Thread Content

【Daily Question No. 119】April 29, 2018. The reasons for excessive vibration in centrifugal pumps are (　). Multiple choice: A. Excessive eccentricity in the alignment between the pump shaft and the drive motor shaft; B. Severe wear around the pump, resulting in excessive gaps; C. High flow rate; D. The pump is under vacuum condition. Answers: ABD. This question is valid for 48 hours; within that time, 10 points are awarded for a correct answer and 2 points for an incorrect answer ； If the response is given after 48 hours, the score is halved, regardless of whether it is correct or not ； Mass posting of posts – rated based on the lowest score ； Replies that are unrelated to the answer are considered spam and will be deleted immediately. For management purposes, if you need to view content from a few days ago, please go to the link below: https://bbs.hcbbs.com/home.php?mod=space&uid=3862647&do=thread&view=me&from=space – specifically the registration-themed section and the voting thread for the “My Registration Season” event: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1954223. The APP video series and skill competition have now begun! https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1951670