【Mechanical Equipment Technology Exchange Edition】Mechanical Equipment 【Daily Question】20201227
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The reason for the low head pressure of a centrifugal pump is (B). A. High inlet pressure B. Too low rotation speed C. Poor alignment of the couplings D. Excessively large outer diameter of the impeller. For the daily question activity in the rotating equipment section, please respond within 3 days.;victory: Rewards range from 5 to 15 points depending on the quality of the response, with additional rewards for those who can provide detailed answers. All forum members are welcome to participate actively and help promote the development of the forum! ! !
B. Low rotational speed. Explanation: The head is related to the rotational speed in a quadratic manner: H1/H2 = (n1/n2)^2.