【Daily Question】 【AC Version for Static Equipment...Question 20】 January 20, 2019 – True/False Multiple Choice Question...Making Continuous Progress

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bg4.png【Daily Question】【AC Version for Static Equipment...Question 20】 January 20, 2019 – True/False multiple-choice question...Make steady progress. Please fill in the answers (multiple choice, single choice, single choice) in order. Reward rules: 1 wealth for participation, 3 wealth for each correct answer, up to a maximum of 10 wealth. This topic is valid for two days; no scoring will be given if it exceeds two days by 48 hours. The 2018 HaiChuan “Top 10 Outstanding Members” selection campaign has officially begun (Phase 1: Recommend the outstanding members in your eyes). https://bbs.hcbbs.com/thread-2243161-1-1.html There are also 19 rewards available; act now before it’s too late. Comprehensive Collection of Personal Integration Materials — Along with [Coating Materials – Comprehensive Collection] — Adding a Touch of Color to the New Year https://bbs.hcbbs.com/thread-2259051-1-1.html 1. Which of the following components are compressive components ()? A. Conical shell head ； B. Manhole flat cover ； C. Strengthening Circle ； D. Support pad---------------- 2. For an external pressure vessel with a diameter of φ1200mm and a cylinder length of 2000mm, having hemispherical end caps, its calculated length for external pressure is (). A. 2000mm B. 2400mm C. 2600mm D. 2800mm------------------ 3. There are both normal stresses and shear stresses in the principal plane of the stressed object. ( ) A. Correct B. Incorrect ------------------ Answers: 1. A B C 2. B 3. B 1. Comment: This question relates to the fundamentals of pressure vessel design and is content that must be mastered. Refer to HG/T20580-2011 (3..0.2 components). 2. Comments: This question relates to the knowledge in GB150.3 for the calculation of externally pressurized vessels. 3. Comments: Stress, principal stresses, and the principal stress plane are the most fundamental concepts in elasticity mechanics; they are used for analyzing the stress in compressed components, understanding the basic stress conditions of pressure vessels, and determining the criteria for evaluation.