【Daily Question: Pump Equipment】Fill-in-the-blank and True/False Questions, April 3, 2019

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This post was last edited by 3983596_FPPZ on 2019-4-3 09:46, with the file bk09.jpg. Rules for answering questions: 1. If both questions are answered incorrectly, +2 wealth is awarded for active participation; if one question is answered incorrectly and the other correctly, +5 wealth is given; if both questions are answered correctly, +8 wealth is awarded. 2. If only one answer is provided, unless it is clear which question’s answer it is, a correct answer earns +5 wealth points, while an incorrect answer earns +2 wealth points; in all other cases, it is counted as active participation and grants +2 wealth points. 3. Rewards for answers are available once per person only. 4. Each reply allows scoring for only one person. 5. The answer and its explanation will be visible after responding. 6. The reward is valid for 48 hours; no reward will be given if the deadline is passed. Learn more and win prizes – come by regularly! 1. Fill in the blank: For rolling bearings lubricated with oil, the oil level should be at a height that covers ( ) of the lowest bearing balls ； 2. Judgment: When a three-phase asynchronous motor leaves the factory, with the wiring phases U, V, W on the motor connected in one-to-one correspondence with the power supply phases A, B, C, the rotation direction of the motor should be fixed. ( ) Answer: 1/3-1/2 ； Correct