【Daily Question: Pump Equipment】Multiple-choice Question, May 18, 2019

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This post was last edited by 3983596_FPPZ on 2019-5-18 09:56. Rules for answering questions and managing the post: 1. If all answers to a question are incorrect, participants will receive a reward of 2 wealth points； 2. In the answer section, a correct answer earns 5 wealth points ； A reward of 8 wealth for all correct answers ； 3. Rewards for answers are available once per person only ； 4. Each reply allows for only one management rating ； 5. The answer and explanation will be visible after responding ； 6. The reply reward is valid for 48 hours. Studying* and winning awards again; come by often. Multiple-choice question: Among the following phenomena and characteristics, which ones are common in double-suction centrifugal pumps (BB1)? A. Rolling bearings are highly prone to damage. B. The pump’s net positive suction head requirement (NPSHr) is high. C. The pump experiences significant vibration due to pipeline vibrations. D. The rotation speed is 2950 RPM. Answer: B C