【Daily Question】Pump Equipment Technical Exchange Edition 20180205
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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 efficiency of a water pump refers to the ratio of the pump’s useful power to ( ). A: Shaft power B: Motor output power C: Motor rated power D: Motor input power. Correct answer: A. Answer B: Couplings also have transmission efficiency, so the output power of the motor includes this portion of power. Answer D: Motors are also efficient; the input power of a motor must take into account this power loss in the motor itself. https://attach01.hcbbs.com/forum/201801/05/235057wnwxbzxb311ikvvz.jpg.thumb.jpg
Wrong answer, learned *. One question per day – 365 knowledge points in a year, hehe.
Multiple-choice question: The efficiency of a water pump refers to the ratio of the pump’s effective power to (A). A Axis power B Motor output power C Motor rated power D Motor input power