【Daily Question: Pump Equipment】True or False Question, June 5, 2019

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This post was last edited by 3983596_FPPZ on 2019-6-5 at 10:17. Rules for answering questions and managing the post: 1. If all answers to a question are incorrect, participants who engage actively will be rewarded with 2 Wealth points; replies that are not answers will not receive any reward； 2. In the answer section, a correct answer earns 5 wealth points ； A reward of 8 wealth for all correct answers ； 3. Rewards for answers are available once per person only ； 4. Each reply allows for one management rating only ； 5. The answer and explanation will be visible after responding ； 6. The reply reward is valid for 48 hours. Learning* and winning awards again; come by here every day. 1. Judgment: For large-scale equipment, when checking the rotation direction of the motor, it is necessary to disconnect the coupling first and then start the motor manually to verify whether its rotation direction matches that indicated on the nameplate. （ ） 2. Selection: In the pump vibration standard GB/T29531-2013, pump vibrations are classified into four levels: A, B, C, and D. When the pump’s vibration falls within the （ ） range, it indicates that the pump can only operate for a short period of time, with its operating condition requiring close monitoring ； A, Grade A B, Grade B C, Grade C D, Grade D Answer: 1, Correct ； 2、C.