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【Daily Question: Pump Equipment】Fill-in-the-blank question, April 10, 2019

2019-04-10View Original

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bk12.jpg1. 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 counts 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. Studying* and winning awards again; come by here every day. 1. In accordance with **standard requirements, when a three-phase asynchronous motor leaves the factory, if the power supply phases A, B, and C are connected respectively to the motor’s terminals U, V, and W, then when looking at the motor from its shaft end, the motor should be ( ) ; 2. In cases where the medium temperature exceeds 200 degrees Celsius, it is necessary to warm up the pump before starting it, and the warming speed should generally be controlled at ( ). Answer: 1. Rotate clockwise ; 2. No more than 30 degrees Celsius per hour; a higher value may be used during operation depending on actual conditions
Reply #22019-04-10
When rotated clockwise, the temperature rise per hour should not exceed 50 degrees.
Reply #32019-04-10
1. Clockwise, 2. 50℃/h
Reply #42019-04-10
Clockwise, 30 degrees Celsius per hour
Reply #52019-04-10
Rotate clockwise Rotate clockwise
Reply #62019-04-10
1. In accordance with **standard requirements, when a three-phase asynchronous motor leaves the factory, if the power supply phases A, B, and C are connected respectively to the motor’s terminals U, V, and W, then when looking at the motor from its shaft end, it should rotate (counterclockwise).** 2. In cases where the medium temperature exceeds 200 degrees Celsius, it is necessary to warm up the pump before starting it; the appropriate speed for warming up the pump is generally (15 m/s).
Reply #72019-04-10
1. Rotate clockwise; 2. No more than 30°C per hour; a higher value can be used during operation depending on actual conditions.
Reply #82019-04-10
1. Rotate clockwise; 2、≤50℃/h

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