【Daily Question: Pump Equipment】True or False Question, June 10, 2019

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This post was last edited by 3983596_FPPZ on 2019-6-11 07:34. Rules for answering questions and managing the post: 1. If all answers to a question are incorrect, participants who engage actively will be rewarded with 2 Wealth points; replies that are not answers will not receive any reward； 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 one management rating only ； 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 here every day. 1. The inlet diameters of the numerous impellers (single-suction) in multi-stage pumps are all the same ( ) ； 2. The efficiency of centrifugal pumps with a fixed specific speed has an upper limit ( ). Answer: 1. Incorrect (the inlet of some primary impellers needs to be larger in order to reduce the net positive suction head) ； 2. Correct.