【Pump Technology Edition: Daily Question】February 24, 2020 (Section benefit: 10 wealth points as a reward for answering correctly before the answers are revealed)

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The last edit to this post was made by Xiuxi who fixes pumps on 2020-2-25 at 11:06; it was edited 114 times. A magnetoelectric tachometer measures rotational speed by utilizing the frequency of the pulse-induced electromotive force generated in the coil as a result of changes in the gap between gears and magnets. Its frequency is related to ( ). A. Rotational speed B. Number of gear teeth C. Rotational speed and number of teeth. The answer on February 23, 2020, is C. 113. Spring tube pressure gauges can be manufactured in various specifications to suit different measurement ranges. For pressure gauges in the pressure range below 10 MPa, their Bourdon tubes are made of (). A、50GvA B、Phosphor bronze C、Zinc-tin bronze (Answers are released the day before they are made public; those who get it right before the release receive 10 wealth points, those who get it right after the release receive 5 wealth points, and those who participate receive 3 wealth points.) I’ve been a bit busy lately, so I’m slower at posting questions and providing feedback on scores. But no matter how busy or late it gets, I will still post and respond to everyone. Thank you all for your continued support!