Prize-winning Quiz on Coal Chemical Engineering Knowledge 10
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1. The basic methods of extinguishing fires are ( ), ( ), ( ), ( ). 2. Forms of explosion: ( ), ( ), ( ). 3. The most accurate description of those who need to receive three levels of safety training is ( ). a) New employees joining the factory b) External personnel c) New employees, external personnel, and existing employees who are assigned to new positions within the factory. 4. Safety valves should be installed ( ) and must be placed at the gas phase interface of the container or pipeline. a、Horizontal b、Vertical c、Inclined 5. What is cascade control? Answer: 1. Isolation method, suffocation method, cooling method, suppression method. 2. Physical explosions, chemical explosions, nuclear explosions. 3.c 4.b 5. In the control system, there are two controllers, each receiving measurement signals from different parts of the process plant; the output of one controller serves as the setpoint for the other controller, and it is the output of this latter controller that is used to control the control valve in order to adjust the control parameters. Structurally, these two regulators operate in series; therefore, such a control system is referred to as a cascade control system. Last edited by wbp on 2009-4-11 15:36.]
1: Chemical interruption method, cooling method, suffocation method, isolation method 2: Condensed phase explosion, 3c 4b 5
1. The basic methods of extinguishing fires are (isolation), (cooling), (smothering), and (chemical interruption). 3. The most accurate description of those who need to receive three levels of safety training is (C): a) new employees joining the factory, b) outsiders, c) new employees joining the factory, outsiders, and existing employees who are assigned to new positions within the factory. 4. Safety valves should be installed (B), and they must be placed at the gas-phase interface of the container or pipeline. a、horizontal b、vertical c、tilted
1. The basic methods of extinguishing fires are (cooling), (isolation), (chemical interruption), and (smothering). 2. Forms of explosion: (intense combustion), (rapid expansion in volume), ( ). 3. The most accurate description of those who need to receive three levels of safety training is (c): a) new employees joining the factory; b) outsiders; c) new employees, outsiders, and existing employees who are assigned to new positions within the factory. 4. Safety valves should be installed (b) at the gas-phase interface of containers or pipelines. a、Horizontal b、Vertical c、Inclined 5. What is cascade control: The results from two monitoring points are used in sequence to control the opening degree of a valve, etc.
1. Cooling, isolation, suffocation, and interruption of chemical reactions methods. 2. Chemical explosions, physical explosions, nuclear explosions. 3, A 4, B
1. Isolation extinguishing method, smothering extinguishing method, cooling extinguishing method, suppression extinguishing method. 2. Physical explosion, chemical explosion, nuclear explosion. 3. C. 4. B. 5. A dual-circuit control system consisting of a primary regulator and a secondary regulator connected in series to each other. The main regulator outputs a signal based on the deviation between the main parameter and the set value, which serves as the set value for the secondary regulator. The secondary regulator receives both the secondary parameter signal and the set value, and uses them to control the adjustment mechanism
1. Isolation extinguishing method, smothering extinguishing method, cooling extinguishing method, suppression extinguishing method. 2. Physical explosion, chemical explosion, nuclear explosion. 3. C 4. B 5. Cascade control system: A cascade control system is one in which two regulators operate in series, with the output of one regulator serving as the setpoint for the other regulator.
Isolation fire extinguishing method, smothering fire extinguishing method, cooling fire extinguishing method, suppression fire extinguishing method. Physical explosion, chemical explosion, nuclear explosion. CB: A dual-loop control system consisting of a primary regulator and a secondary regulator connected in series to each other. The main regulator outputs a signal based on the deviation between the main parameter and the set value, which serves as the set value for the secondary regulator. The secondary regulator receives both the secondary parameter signal and the set value, and uses them to control the adjustment mechanism
1. The basic methods of extinguishing fires are (cooling), (isolation), (chemical interruption), and (smothering). 2. Forms of explosion: (intense combustion), (rapid expansion in volume), ( ). 3. The most accurate description of those who need to receive three levels of safety training is (c): a) new employees joining the factory; b) outsiders; c) new employees, outsiders, and existing employees who are assigned to new positions within the factory. 4. Safety valves should be installed (b) at the gas-phase interface of containers or pipelines. a、Horizontal b、Vertical c、Inclined 5. Cascade control system: A cascade control system is one in which two regulators operate in series, with the output of one regulator serving as the setpoint for the other regulator.
1. Isolation fire extinguishing method, smothering fire extinguishing method, cooling fire extinguishing method, suppression fire extinguishing method. 2. Physical explosion, chemical explosion, nuclear explosion. 3. C 4. B 5. Cascade control system: A cascade control system is one in which two regulators operate in series, with the output of one regulator serving as the setpoint for the other regulator.
1. The basic methods of extinguishing fires are (cooling), (isolation), (suppression), and (smothering). 2. Forms of explosion: (physical explosion), (chemical explosion), (nuclear explosion). 3. The most accurate description of those who need to receive three levels of safety training is (a) a) New employees joining the factory; b) External personnel; c) New employees, external personnel, and existing employees who are assigned to new positions within the factory. 4. Safety valves should be installed (b) at the gas-phase interface of the container or pipeline. a、Horizontal b、Vertical c、Inclined 5. What is cascade control: A complex control system in which two controllers are connected in series, with the output of one controller being used to adjust the setpoint of the other controller.
1. The basic methods of extinguishing fires are (isolation), (cooling), (smothering), and (chemical interruption). 3. The most accurate description of those who need to receive three levels of safety training is (C). 4. Safety valves should be installed (B), and they must be placed at the gas-phase interface of the container or pipeline.
1. Isolation method, suffocation method, cooling method, chemical interruption method. 2. Physical explosion, chemical explosion, nuclear explosion. 3. C. 4. B. 5. A dual-loop control system consisting of a primary regulator and a secondary regulator connected in series to each other. The main regulator outputs a signal based on the deviation between the main parameter and the set value, which serves as the set value for the secondary regulator. The secondary regulator receives both the secondary parameter signal and the set value, and uses them to control the adjustment mechanism
1. Cooling, isolation, suffocation, and interruption of chemical reactions methods. 2. Chemical explosions, physical explosions, nuclear explosions. 3, a 4, b