【Daily Question: Pump Equipment】True or False Question, 2019.9.16

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Rules for true/false questions: 1. If both questions are answered incorrectly, +2 wealth for active participation; if one question is answered incorrectly and the other correctly, +4 wealth; if both questions are answered correctly, +6 wealth. 2. If only one answer is provided, unless it is clear which question’s answer it is, a correct answer earns +4 wealth points, while an incorrect answer earns +2 wealth points; in all other cases, it is counted as active participation and grants +2 wealth points. 3. Rewards for answers are available once per person only. 4. Each reply allows scoring for only one person. 5. The answer and its explanation will be visible after responding. 6. The reward is valid for 48 hours; no reward will be given after that period. 7. Posts that have been edited will receive only +2 wealth points. Learn more and win prizes; come by here every day. 1. The characteristic of a turbulent rotor is a first-order critical speed that is less than 0.7 times that value. （ ） 2. Under normal circumstances, reciprocating pumps are suitable for applications with high flow rates and low head pressures ； Centrifugal pumps are suitable for applications with low flow rates and high head pressures. ( ) Answer: Incorrect (A turbulent rotor is one in which the operating speed is greater than 1.4 times the first critical speed and less than 0.7 times the second critical speed.) ） ； Error (said the opposite). I’ve been working overtime non-stop for the past two weeks; today, my department is on 24-hour duty – it’s already early in the morning, and I’m posting this post in the dead of night. The Mid-Autumn Festival is over, and it’s time to go back to work – everyone should get their minds back on things! ~