【Daily Question】Pump Equipment Technical Exchange Edition 20180207
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Participation: Prize 3 Wealth； Correct answer: Reward of 10 wealth points ； Note: A reward of 10 wealth points will be given for correct answers within 48 hours; this post is valid for 48 hours. Multiple-choice question: When the size of the centrifugal pump impeller remains constant, the head of the water pump is directly proportional to the （ ） of its rotational speed. A first power B square C cube Correct answer: B https://attach01.hcbbs.com/forum/201801/05/235057wnwxbzxb311ikvvz.jpg.thumb.jpg
Multiple-choice question: When the size of the centrifugal pump impeller remains constant, the head of the water pump is directly proportional to the (B) of its rotational speed. A first power B second power C third power
B Head pressure is proportional to the square of the motor speed