【Daily Question】Pump Equipment Technical Exchange Edition 20180419
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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: The reasons for too low discharge volume after the pump starts operating are ( ). A. Local blockage in the impeller flow channel B. Severe wear of the sealing ring C. The frequency of the variable-frequency motor is too high D. The gate valve is opened too little. Correct answers: ABD https://attach01.hcbbs.com/forum/201801/05/235057wnwxbzxb311ikvvz.jpg.thumb.jpg
A. Local blockage in the impeller flow channel B. Severe wear of the sealing ring D. The gate valve is opened too little