【Daily Question】2015.09.26 (2 wealth points for replying, +3-8 additional wealth points for a correct answer)
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This post was last edited by WQC on 2015-9-28 at 15:08. The Mechanical 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. Single-choice question: The allowable operating temperature for the rolling bearings of a centrifugal pump is ( ). A. Less than or equal to 75 degrees ； B. Less than or equal to 70 degrees ； C. Less than or equal to 65 degrees ； D. Less than or equal to 115 degrees. The answer is: A. 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. Charisma Reward: If you post a topic in this section within two days to provide a detailed explanation or discussion of the knowledge points related to this question, please reply or leave a comment in this post to let us know, and we will have a moderator award you charisma points. 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 participant will receive +1 charm, the second-to-last +2 charm, and so on, with the highest score earning +5 charm.
B. Less than or equal to 70 degrees: Centrifugal pumps – sliding bearings shall not exceed 65°C, rolling bearings shall not exceed 70°C; Motors – sliding bearings shall not exceed 80°C, rolling bearings shall not exceed 100°C℃
The allowable operating temperature for the rolling bearings of a centrifugal pump is (B) A. Less than or equal to 75 degrees； B. Less than or equal to 70 degrees ； C. Less than or equal to 65 degrees ； D. Less than or equal to 115 degrees
The answer should be B, the temperature of the sliding bearing is low
B------------------------------------------
Multiple-choice question: The allowable operating temperature for the rolling bearings of a centrifugal pump is (C, less than or equal to 65 degrees). A. Less than or equal to 75 degrees； B. Less than or equal to 70 degrees ； C. Less than or equal to 65 degrees ； D. Less than or equal to 115 degrees
The allowable operating temperature for the rolling bearings of centrifugal pumps is (d)
Single-choice question: The allowable operating temperature for the rolling bearings of a centrifugal pump is (C, less than or equal to 65 degrees). A. Less than or equal to 75 degrees； B. Less than or equal to 70 degrees ； C. Less than or equal to 65 degrees ； D. Less than or equal to 115 degrees
Single-choice question: The allowable operating temperature for the rolling bearings of a centrifugal pump is (C, less than or equal to 65 degrees). A. Less than or equal to 75 degrees； B. Less than or equal to 70 degrees ； C. Less than or equal to 65 degrees ； D. Less than or equal to 115 degrees
B................................