【Test Your Knowledge】Basic Chemical Engineering Knowledge (150) – Please hide your replies.

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This post was last edited by zhangyong6404 on 2009-8-5 17:17. In accordance with the forum’s guidelines, the maximum score for this activity is 15 Wealth points; giving scores based on charm is prohibited. At the same time, friendship requests and repeated ratings are declined. To encourage active participation from members, the top 5 correct answers receive a full score; for the remaining answers, 10–15 wealth points are awarded for every correct answer, while 8–12 wealth points are given for each incorrect answer. 2 mistakes result in a loss of 6–10 wealth points; the rest receive encouragement points ranging from 2–6 wealth points. 1 The most typical 18-8 type nickel-chromium stainless steel is: A. Ferritic stainless steel B. Martensitic stainless steel C. Austenitic stainless steel D. None of the above. 2 The corrosion resistance of OCr18Ni9 stainless steel is mainly due to the action of which element? A. C B. Cr C. Ni D. ×e. 3 When the inlet flow rate remains constant, which of the following situations is likely to cause surge in a centrifugal compressor? A. Operating at low speed B. Operating at high speed C. Low compression ratio D. High molecular weight of the gas. 4 When comparing the stresses experienced by thin-walled containers and thick-walled containers, thick-walled containers have which stress that thin-walled containers do not? A. Radial stress B. Tensile stress C. Circumferential stress D. Longitudinal stress. 5 If the temperature inside a certain device is around 1000°C, which type of thermocouple is suitable for temperature measurement? A. Type K B. Type E C. Type S D. Type T. 6 Which of the following is not part of the basic components of a distributed control system? A. Field control stations B. Operator stations C. Communication networks D. Field devices. 7 The incorrect methods for controlling the speed of a DC motor are: A. Series resistance in the armature B. Field weakening for speed control C. Reducing the power supply current D. Reducing the power supply voltage. 8 For measuring dynamic pressure, which type of pressure sensor is most suitable? A. Strain gauge type B. Piezoelectric type C. Fiber optic type D. Differential pressure type. 9 Which of the following units is not a fundamental unit of the International System of Units? A. mol B. kg C. cm D. k. 10 Collectivism is the A. basic principle B. core C. basic requirement D. fundamental guideline of socialist morality. At present, all members already have the permission to use hidden replies; please cooperate actively. Starting from this issue, no scoring will be given in principle without hiding it. Thank you all! Also, be careful when posting; edits are invalid! To hide the method, click here: Hide Method. Answers for issue 150: cbbacdcbca