【Daily Question】June 17: Tolerance issues regarding the performance of centrifugal blowers (+2 for the first 80 participants; +3–8 extra points for correct answers...)
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This post was last edited by whthday on 2015-6-18 at 12:57. The Mechanical Section has introduced the \"Question of the Day\" feature, which not only helps to foster an active atmosphere for technical discussions and guide the direction of such exchanges but also provides users with financial rewards, enabling them to experience various cool features. 【Daily Question】 For turbine-driven blowers, under the condition of maintaining the outlet pressure and flow rate, the deviation in shaft power must not exceed () of the specified value; the flow rate and pressure can be adjusted to the rated values by varying the speed. A. 2% ； B. 3% ； C. 4% ； D. 5% Answer: C Requirements and hints for answering the question: Reply with the answer you think is 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. 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 related to this question, please reply or leave a comment in this post to let us know; we will then 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 and opinions. After registration, we will rank based on the content of the 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. Call for weekly topics and daily questions (prizes for participation) [Mechanical Section] Collection of essential knowledge [Seeking manufacturer sponsorship] (long-term campaign) [Rewards for recommending valuable content] Summary of daily questions and answers related to mechanical equipment for 2015
C ； 4% National Machinery Industry Standards of the People’s Republic of China – Chapter 5.5 specifies requirements for pneumatic performance tests
For turbine-driven blowers, under the condition of maintaining the outlet pressure and flow rate, the deviation in shaft power must not exceed the specified value (C); the flow rate and pressure can be adjusted to the rated values by varying the speed.
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【Daily Question】 For turbine-driven blowers, under the condition of maintaining the outlet pressure and flow rate, the deviation in shaft power must not exceed a specified value of (c. 4%), and the flow rate and pressure can be adjusted to the rated values by changing the speed. A. 2% ； B. 3% ； C. 4% ； D. 5%
For turbine-driven blowers, under the condition of maintaining the outlet pressure and flow rate, the deviation in shaft power shall not exceed 4% of the specified value; the flow rate and pressure can be adjusted to the rated values by varying the speed. A. 2% ； B. 3% ； C. 4% ； D. 5%
For turbine-driven blowers, under the condition of maintaining the outlet pressure and flow rate, the deviation in shaft power must not exceed the specified value (C); the flow rate and pressure can be adjusted to the rated values by varying the speed. C. 4%
C. 4%. It should be plus or minus 4%.
For turbine-driven blowers, under the condition of maintaining the outlet pressure and flow rate, the deviation in shaft power must not exceed the specified value (a); the flow rate and pressure can be adjusted to the rated values by varying the speed. A. 2% ； B. 3% ； C. 4% ； D. 5%