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【Daily Question】June 12: Reasons for excessive outlet pressure in Roots blowers (First 80 participants + 2 correct answers earn an additional 3–8 wealth points)

2015-06-12View Original

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This post was last edited by A Le on 2015-6-14 at 10:24. The Machinery Section has introduced the \"One Question per Day\" feature, which aims to foster an active atmosphere for technical exchanges and guide the direction of such discussions, while also providing users with financial rewards to help them experience various cool features. 【Daily Question】A rotary vane blower has a rated pressure increase of 30 kPa. If, during actual operation, the pressure behind the outlet valve reaches 50 kPaG, the possible reasons are: ( ) A. The local temperature is too low. B. The blower selected is too powerful. C. The motor’s rated power is too high. D. There is pressure buildup in the subsequent system. Answer: D. For the analysis, see the best answer post. Requirements and hints for answering questions: Please reply with the answer you believe to be correct. If you provide a detailed explanation or analysis of the question or answer, an additional reward will be given. Extra rewards will be awarded if your answer is correct and your explanation is thorough and accurate. Feel free to answer the questions. Please note: We will close this thread after 24 hours, and at that time we will announce the best reply (the best assistance), as well as the answer and explanation. Please do not submit answers repeatedly. As a reward for your effort, if you post a topic in this section within two days that provides a detailed explanation of the knowledge points covered in this question, please reply to this post or leave a comment to inform us, and we will have a moderator assign you + Charm. It is not allowed to simply copy and paste; original content is preferred, with at least some organization by the user along with personal insights. After registration, we will rank participants based on the content of their posts: the last-place contestant will receive +1 charm, the second-to-last +2 charm, and so on, with the highest score earning +5 charm. Other content: Call for weekly topics and daily questions (prizes for participation) [Mechanical Section] Collection of essential knowledge [Seeking manufacturer sponsors] (long-term campaign) [Rewards for recommending valuable content] Summary of daily questions and answers related to mechanical equipment for 2015
Reply #22015-06-12
A certain rotary vane blower has a rated pressure rise of 30 kPa. If, during actual operation, the pressure behind the outlet valve reaches 50 kPaG, the possible reason is: (D) D. Pressure buildup in the subsequent system
Reply #32015-06-12
A certain rotary vane blower has a rated pressure rise of 30 kPa. If, during actual operation, the pressure behind the outlet valve reaches 50 kPaG, the possible reasons are: (D) A. The local temperature is too low; B. The blower selected is too powerful; C. The motor’s rated power is too high; D. There is pressure buildup in the subsequent system
Reply #42015-06-12
A certain rotary vane blower has a rated pressure increase of 30 kPa. If, during actual operation, the pressure behind the outlet valve reaches 50 kPaG, the possible reasons are: (D) A. The local temperature is too low; B. The blower selected is too powerful; C. The motor’s rated power is too high; D. There is pressure buildup in the subsequent system
Reply #52015-06-12
I feel like this situation will cause a trip due to the motor being overloaded.

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