Question bank source: Safety production mock test, one-stop public account applet
The G2 power station boiler stoker practice test video is generated by the safety production simulation test, and the G2 power station boiler stoker certificate mock exam question bank is compiled according to the latest version of the G2 power station boiler stoker simulation test textbook. 2024 [G2 Power Station Boiler Stoker] Practical Exam Video and G2 Power Station Boiler Stoker Exam Questions
1. [Multiple choice questions] The following options belong to the main characteristics of the burning of the four corners of the tangent circle. （ AB ）
A. Stabilize the ignition of pulverized coal
B. Accelerate the burnout of fuel after ignition
C. The adaptability to coal types is not strong
D. The furnace structure is complicated
2. [Multiple choice questions] The responsibilities that the parties to the accident should bear are divided into (). （ ABCD ）
A. Full Liability;
B. Primary Responsibilities;
C. Secondary liability;
D. Equal Responsibility
3. [Multiple choice questions] The methods of accident reporting include: (). （ ABCD ）
A. Report level by level
B. Direct reporting
C. Off-site reporting
D. Statistical reporting and reporting
4. [Multiple choice questions] Regarding the "Assessment Rules for Special Equipment Operators", the following statement is correct (). （ ABC ）
A. The test results are valid for 1 year
B. Those who fail to pass the single examination subject are allowed to apply for a make-up examination once within 1 year
C. Those who fail to pass both items or still fail to pass the make-up examination shall reapply for the examination
D. The "Special Equipment Operator Certificate" is reviewed every 4 years
5. [Multiple choice questions] Measures to reduce low-temperature corrosion are (). （ ABC ）
A. The heating surface of the cold end is made of corrosion-resistant materials
B. Fuel desulfurization
C. Hot air recirculation
D. Reduce the air inlet temperature
6. [Multiple choice questions] What are the flow patterns in the vertical riser? （）（ ABCD ）
A. Bubble flow
B. Bullet flow
C. Annular flow
D. Mist flow
7. [Multiple choice question] What are the components of flue gas produced when completely combusted? （）（ ABCD ）
A、CO2
B、SO2
C、N2
D、H2O
8. [Multiple choice questions] The influence of the change of circulating flow bed boiler bed material on the critical flow rate and critical flow rate is mainly (). （ ABD ）
A. If the equivalent diameter of the bed material increases, the critical flow rate will increase;
B. When the particle density in the bed material increases, the critical flow rate also increases;
C. If the accumulation void ratio of the bed material decreases, the critical flow increases;
D. When the kinematic viscosity or temperature of the bed material increases, the critical flow rate will decrease.
9. [Multiple choice questions] According to the flow direction of steam and flue gas, the arrangement of convection superheater and reheater can be divided into (). （ ABC ）
A. Downstream
B, Backflow
C. Mixed flow
D. Rafting
10. [Multiple choice question] There are two forms of sewage discharge, namely () and (). （ AC ）
A. Surface discharge
B. Intermittent sewage discharge
C. Regular sewage discharge
11. [Multiple choice questions] The water wall is the main () of the boiler, which absorbs the radiant heat of the high-temperature flue gas and flame in the furnace, and heats and evaporates the water into (). （ AB ）
A. Evaporation heating surface
B. Saturated steam
12. [Multiple choice question] The purpose of smoke and dust removal is (). （ AC ）
A. Eliminate smoke and dust
B. Reduce the emission of flue gas
C. Protect and improve the atmospheric environment
D. Protect water quality
E. Improve the environment of the boiler room
13. [Multiple choice questions] The flue gas emitted from thermal power plants will cause atmospheric pollution, and its main pollutants are (). （ ABC ）
A. Sulfur dioxide
B. Dust
C. Nitrogen oxides
D. Trace heavy metals
14. [Multiple choice question] The components of the furnace flame that have the ability to radiate are (). （ ABCD ）
A. Triatomic gas
B, charcoal particles
C. Ash particles
D. Carbon black particles
15. [Multiple choice questions] The combustion characteristics of coal include (). （ ABCDE ）
A. Hydrocarbon ratio,
B. Fuel efficiency ratio,
C, response index,
D. Combustion characteristic curve of coal,
E. Ignition stability index of coal
16. [Multiple choice questions] What indicators are commonly used to express the slag formation of coal? （）（ ABCD ）
A. Slag rate
B. Alkali-acid ratio
C. Silicon-aluminum ratio
D. Slag coefficient of coal ash
E. Evaporation
F. Calorific value
17. [Multiple choice questions] The spray combustion of fuel oil is mainly divided into () ( ABCD )
A. Atomization stage
B. Evaporation stage
C. Mixing stage of oil and gas and air
D. Ignition and combustion stage
18. [Multiple choice questions] The composition of fuel is divided into (). （ ABCDEFG ）
A、C
W、H
C、O
D、N
E、S
F、W
G、G.A
19. [Multiple choice question] The heterogeneous combustion reaction region of carbon is (). （ ABC ）
A. Power combustion area
B. Diffusion combustion area
C. Transition combustion area
D. Solid combustion area
20. [Multiple choice questions] Coal mills are generally divided into (). （ BCD ）
A. Uniform speed coal mill
B. Low-speed coal mill
C. Medium-speed coal mill
D. High-speed coal mill
21. [Multiple choice question] What parameters need to be monitored at the outlet of the superheater to ensure the safe operation of the boiler (). （ AB ）
A. Steam pressure
B. Steam temperature
C. Steam flow
D. All other options are correct
22. [Multiple choice questions] What principles are generally observed in the layout of superheaters? （）（ AB ）
A. Countercurrent arrangement in the low temperature zone
B. Downstream arrangement in the high temperature area
C. Arrangement of low temperature zone downstream
D. Countercurrent arrangement in the high temperature area
23. [Multiple choice questions] Metal materials are usually manifested as () under the action of applied load or load and environmental factors. （ ABD ）
A. Elastic deformation
B. Plastic deformation
C. Brittle deformation
D. Fracture
24. [Multiple choice questions] The rated steam pressure refers to the steam pressure at the outlet of the steam boiler that should be guaranteed during long-term operation within the specified feed water pressure and the specified load range. （ AC ）
A. Superheater
B. Economizer
C. Reheater
D. Furnace
25. [Multiple Choice] Which of the following does not belong to the milling system? （）（ D ）
A. Powder separator
B. Coal feeder
C. Powder feeder
D. Air feeder
26. [Multiple choice question] The highest volatile content of the following coal types is (). （ A ）
A、褐煤
B. Bituminous coal
C. Anthracite
D. Lean coal
27. [Multiple Choice] Which of the following is not the heat exchange interval ()( A )
A. Multiphase liquid zone
B. Surface boiling zone
C. Drying point
D. Superheated steam zone
28. [Multiple choice question] Which of the following phenomena will occur when judging the water shortage accident of the steam boiler. （ A ）
A. The water level gauge indicates that it is lower than the minimum safe water level
B. The salt content of steam increases
C. The temperature of superheated vapor drops sharply
29. [Multiple Choice] Which of the following phenomena will occur when judging the water shortage accident of the steam boiler? （）（ A ）
A. The water level gauge indicates that it is lower than the minimum safe water level
B. The salt content of steam increases
C. The temperature of superheated vapor drops sharply
30. [Multiple choice] The wall temperature of the heating surface is always close to (). （ B ）
A. Flue gas temperature
B. Working fluid temperature
C. Steam temperature
31. [Multiple Choice] Which is not a measure to reduce and prevent thermal deviation? （）（ D ）
A. Install throttle valve
B. Reduce the width of the tube screen
C. Adopt a reasonable flow rate of working fluid
D. Reduce the flue gas flow
32. [Multiple Choice] Under atmospheric pressure, the dissolved oxygen in the water increases with the increase of water temperature (). （ A ）
A. Lower
B. Elevated
C. No change
33. [Multiple Choice] Under the condition that the evaporation of the boiler remains unchanged, when the feed water temperature decreases, the superheated steam temperature increases, and the reason is (). （ B ）
A. Overheating heat increases
B. Increase in the amount of fuel
C. The heating heat increases
D. Heating heat is reduced
34. [Multiple choice question] If a flue re-combustion accident occurs, when measures are taken and are ineffective, (). （ A ）
A. Stop the furnace immediately
B. Apply for furnace shutdown
C. Keep the unit running
D. Report to superiors
35. [Multiple choice] The total exhaust capacity of the safety valve should be (). （ A ）
A. Greater than the rated evaporation capacity of the boiler
B. Less than the maximum continuous evaporation of the boiler
C. Equal to the maximum continuous evaporation of the boiler
36. [Multiple Choice] When the feed water temperature decreases, for the natural circulation boiler, the steam temperature at the outlet of the reheater will be ( ) ( A )
A. Elevated
B. Lower
C. No change
D. First rise and then decrease
37. [Multiple Choice] The mainland's power generation is mainly coal, and theoretically, the average burning of () grams of coal can generate one kilowatt-hour of electricity (A)
A、122.9
B、200
C、500
D、1000
38. [Multiple choice question] According to the steam pressure, the following are not (). （ C ）
A. Low pressure
B. High pressure
C. Critical pressure
D. Ultra-supercritical pressure
39. [Multiple Choice] The internal kinetic energy of a gas is mainly determined by the () of the gas. （ A ）
A. Temperature;
B. Pressure;
C, specific volume;
D. Density
40. [Multiple Choice] The pressure in the steam drum is compared with the pressure of the main steam (). （ A ）
A. Steam drum > main steam
B. The steam drum < the main steam
C. Steam drum = main steam
D. Judge according to the actual situation
41. [Multiple Choice] The initial stage of steam drum boiler ignition is a very unstable operation stage, in order to ensure safety, (). （ A ）
A. All the protection of the boiler should be put in
B. Monitoring and adjustment should be strengthened
C. The liaison system should be strengthened
D. All protections should be lifted
42. [Multiple Choice] The general mechanical properties and indexes of furnace wall materials do not include (). （ A ）
A, Fire resistance
B. Thermal conductivity
C. Thermal expansion
D. Air permeability
43. [Multiple Choice] In the small bus number, the positive pole of the DC control bus in section I is represented by (). （ C ）
A、=+KO194
B、=-KO194
C、=+KO193
44. [Multiple Choice] Which of the following is the relationship between the reciprocal 1/α of thermal resistance and the heat transfer coefficient K? （ A ）
A、1/α=K
B、1/α>K
C、1/α
45. [Multiple choice] Pulverized coal () refers to the uniformity of the size of pulverized coal particles. （ A ）
A. Uniformity
B. Liquidity
C. Explosiveness
D. Spontaneous combustion
46. [Multiple Choice] Modern large-scale boilers widely use the form of () water wall. （ D ）
A. Plain tube water wall
B. Membrane water wall
C. Pin pipe water wall
D. Plain tube membrane water cooling wall
47. [Multiple Choice] The theoretical flue gas composition does not include (). （ A ）
A. Oxygen
B. Carbon dioxide
C. Nitrogen
D. Water vapor
48. [Multiple Choice] Pipe Circle. Safe Production Mock Exam One-Point Pass. The underenthalpy of the mouth (), the more stable the hydrodynamic characteristics are. （ B ）
A. The bigger
B. The smaller
C. Maintain stability
D. Periodic changes
49. [Multiple Choice] The self-compensation characteristics of natural circulation, when the gas content is not too large, the increase of the movement pressure difference () the increase of flow resistance, and the increase of the circulation flow rate with the gas content (). （ A ）
A. Greater than the increase
B. Greater than decreased
C. Less than the reduction
D. Less than the increase
50. [Multiple Choice] To obtain clean steam, it is necessary to reduce the () of the pot water. （ C ）
A. Sewage discharge;
B. Dosage;
C. Salt content;
D. Water level.
51. [Multiple choice question] The relationship between the mass vapor content and the cycle rate is (). （ B ）
A. Equal
B. Reciprocal
C. Linearity
D. Nonlinearity
52. [Multiple choice question] chain furnace segmented air distribution method (). （ A ）
A. Less at both ends and more in the middle
B. More at both ends and less in the middle
C. More at both ends and more in the middle
D. Less at both ends and less in the middle
53. [Multiple Choice] In the calculation of the thermal balance of the boiler unit, the carbon content of the exhaust fly ash is the heat loss caused by (). （ B ）
A. Calculated in the heat loss of incomplete combustion of gas
B. Calculated in the heat loss of incomplete combustion of solids
C. Calculated in exhaust gas heat loss
D. Not counted in any item
54. [Multiple choice question] The boiler water pressure test is generally carried out once (). （ D ）
A. Annually;
B. Every two years;
C. Every three years;
D. Every six years
55. [Multiple choice question] The dust discharged by the electrostatic precipitator usually belongs to (). （ B ）
A. Dust reduction
B. Dust
C. Dust reduction and dust
D. The other options are incorrect
56. [Multiple Choice] () is mainly used to connect or cut off the medium of each section of the pipeline. （ A ）
A. Gate valve
B. Reversing valve
C. Throttle valve
D. Regulating valve
57. [Multiple choice question] () is an important index for judging the performance of coal slag. （ A ）
A. Melability of coal ash
B. Melting point of coal ash
C. Softening temperature
D. Deformation temperature
58. [True or False] The "Special Equipment Safety Law of the People's Republic of China" stipulates that the special equipment user shall carry out regular maintenance and regular self-inspection of the special equipment it uses, and make records. （）（ √ ）
59. [True or False] Rise, Latest Analysis, In the tube, for every 1kg of steam generated, the total amount of water entering the circulation circuit is called the circulation rate. （）（ √ ）
60. [True or False] In order to maintain the heat transfer effect of the heating surface of the boiler, it is necessary to remove the ash on the pipe wall regularly. （）（ √ ）
61. [True or False] The general acceptance and overall trial operation of the main equipment after the overhaul shall be presided over by the chief engineer and the relevant personnel shall be designated to participate. The overall trial operation of the main equipment after minor repairs is generally presided over by the person in charge of workshop maintenance and operation, and the chief engineer or other designated personnel is presided over by the chief engineer or other designated personnel for large-capacity unit units. （）（ √ ）
62. [True or False] In the evaporation heating surface of the forced flow boiler, the phenomenon that the size of the flow rate periodically changes with time is the flow pulsation. （）（ √ ）
63. [True or False] In a heat exchanger, when the inlet and outlet temperature of the hot and cold fluid is constant. The safety production mock test is a one-point pass. , the heat transfer effect is poor when the countercurrent arrangement is adopted. （）（ × ）
64. [True or False] The safety valve shall be calibrated at least once every two years. （）（ × ）
65. [True or False] Regular manual discharge test of the safety valve is to prevent the disc and seat of the safety valve from sticking. （）（ √ ）
66. [True or False] The pipes of the convection superheater and the reheater can be arranged in two ways: vertical and horizontal. （）（ √ ）
67. [True or False] () Judgment and handling of pressure vessel faults should be stable, accurate and fast. "Steady" means that after the failure of the pressure vessel, the operator must remain calm and not panic; "Accurate" means that the cause of the failure should be accurately judged; "Fast" means that the fault should be dealt with quickly to prevent the accident from expanding. （）（ √ ）
68. [True or False] When several boilers share the blowdown mother, a shut-off valve must be installed on the main pipe connected to the blowdown mother pipe of each boiler. （）（ √ ）
69. [True or False] The main factors affecting the thermal deviation of the heating surface of forced flow evaporation are uneven thermal and uneven hydraulic flow. （）（ √ ）
70. [True or False] When all the leading fans or rotary air preheaters fail to stop running, they should apply for stopping the furnace. （）（ × ）
71. [True or False] Equipment that converts fuel chemical energy into working fluid thermal energy: boiler. （）（ √ ）
72. [True or False] The function of the flame folding angle: improve the filling degree of the furnace and improve the conditions of flue gas scouring in the screen superheater or convection superheater. （）（ √ ）
73. [True or False] According to the "Special Equipment Safety Law of the People's Republic of China", accidents can be divided into particularly major accidents, major accidents, major accidents, and general accidents. （ √ ）
74. [True or False] Coal with low volatile content is easy to catch fire, but the later combustion is unstable. （）（ √ ）
75. [True or False] The purpose of water quality management is to prevent scale and corrosion, improve heat transfer efficiency and steam quality, and reduce the amount of sewage discharge. （）（ √ ）
76. [True or False] Combustion and Safety Production Mock Exam of Oil One point and one point is the maximum temperature at which continuous combustion is maintained. （）（ × ）
77. [True or False] The main methods of flue gas side steam temperature adjustment are flue gas recirculation, separating the flue gas and flue gas baffle, and changing the center position of the flame. （）（ √ ）
78. [True or False] The influencing factors of thermal deviation are uneven hydraulics and uneven thermal power. （）（ √ ）
79. [True or False] The slag formation of coal refers to the slag formation of coal ash when it is heated, softened and melted during the gasification or combustion process of coal. （）（ √ ）
80. [True or False] The more pulverized coal volatiles are precipitated and the finer the pulverized coal, the greater the pressure generated when the pulverized coal explodes. （）（ √ ）
81. [True or False] The average heat of fuel input into the furnace per hour is called the furnace heat load. （）（ √ ）
82. [True or False] The core of fuel management is to manage the quantity and quality of fuel. ('Safety Production Mock Exam Easy')( √ )
83. [True or False] Special equipment operators and management personnel shall pass the assessment of the special equipment safety management department in accordance with relevant national regulations and obtain the special operation personnel certificate in the national unified format before they can engage in the corresponding operation or management work. （）（ √ ）
84. [True or False] The main phenomenon of economizer damage is that there is a leakage sound in the flue of economizer, the exhaust gas temperature decreases, the flue gas temperature and wind temperature on both sides deviate greatly, the feed water flow is abnormally greater than the steam flow, and the negative pressure of the furnace decreases. （）（ √ ）
85. [True or False] The function of economizer: reduce the exhaust gas temperature, improve the efficiency of the boiler, and save fuel. （）（ √ ）
86. [True or False] Air preheaters are divided into two types: air preheater tubes and rotary air preheaters. （）（ √ ）
87. [True or False] The reason why the air of the air preheater passes horizontally and the flue gas passes vertically is that there are impurities in the flue gas, the air preheater is damaged, and the convective heat transfer coefficient of the flue gas > the air. （）（ √ ）
88. [True or False] Special equipment with serious excess energy consumption can continue to be used. （）（ × ）
89. [True or False] When the flow is natural circulation, the pressure drop is characterized by the gravity pressure difference as the main feature. （）（ √ ）
90. [True or False] After the overhaul of the rotating machinery or motor, you should first confirm that the rotation direction is correct before connecting the backrest wheel to prevent reversal or damage to the equipment. （）（ √ ）
91. [True or False] The steel tube economizer cannot be used as a boiling type. （）（ × ）
92. [True or False] The boiler user shall carry out boiler water (medium) treatment in accordance with the requirements of safety technical specifications, and accept the regular inspection of water (medium) treatment carried out by special equipment inspection and testing institutions. （）（ √ ）
93. [True or False] When the boiler components are damaged and endanger the safety of the operating personnel, the boiler should be stopped immediately. （）（ √ ）
94. [True or False] After the pressure components of the boiler are repaired or transformed, a hydrostatic test is required. （）（ √ ）
95. [True or False] The effective volume of the boiler refers to the space of suspended combustion and heat transfer of pulverized coal, and is used to calculate the volume part of the furnace heat load. （）（ √ ）
96. [True or False] The boiler superheater adopts hierarchical control: that is, the whole superheater is divided into several stages, and a desuperheating device is set up at each stage to control the steam temperature of the superheater at each stage respectively, so as to maintain the main steam temperature as a given value. （）（ √ ）
97. [True or False] During the operation of the boiler, if all the feedwater pumps fail or the feedwater system fails, and water cannot be fed into the boiler, the furnace should be stopped immediately. （ √ ）
98. [True or False] During boiler operation, the boiler should be fed evenly and continuously, or frequently and sparingly, so as to keep the water level fluctuating slightly near the normal water line. （）（ √ ）
99. [True or False] The function of the pot is to increase the heating area. （）（ × ）
100. [True or False] The definition of high calorific energy is the complete combustion of fuel, and the water produced releases latent heat of vaporization (in gaseous form). （）（ × ）
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