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English Translations » 【设计及技术圈】 » 【Daily Question】Theoretical Foundation 2019.8.11

【Daily Question】Theoretical Foundation 2019.8.11

2019-08-11View Original

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Multiple-choice question: When shutting down a centrifugal pump, it is advisable to ( ) A. Close the outlet valve first and then cut off the power supply B. Cut off the power supply first and then close the valve C. It’s fine to either close the outlet valve first or cut off the power supply first D. For single-stage pumps, cut off the power supply first; for multi-stage pumps, close the outlet valve first. Answer: A Hint: The answer can be seen upon response
Reply #22019-08-11
A. Close the outlet valve first, then cut off the power 
Reply #32019-08-11
A. Close the outlet valve first, then cut off the power
Reply #42019-08-11
A. Close the outlet valve first, then cut off the power 

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Translated at 2026-07-21 03:20:19

Original: https://bbs.hcbbs.com/thread-2761956-1-1.html

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