2022 explosion proof electrical operation certificate examination question bank and simulation examination

Source of question bank ： Safety production simulation test, a little public official account.

2022 The title of explosion-proof electrical work license is the high-frequency examination questions of explosion-proof electrical work license ！2022 The examination question bank and simulation examination of explosion-proof electrical operation certificate are based on the new version of explosion-proof electrical examination question bank . The explosion-proof electrical exercises are available at any time according to the safety production simulation test .

1、【 Single topic selection 】III Class I electrical equipment , According to the explosive dust environment that can be used, it can be divided into IIIAIIIBIIIC, among () It can be used in all explosive dust environments .（ A ）

A、III

B、

C、III

D、

E、

2、【 Single topic selection 】 Improper installation and maintenance will make the explosion-proof performance of explosion-proof electrical equipment ().（ C ）

A、 enhance

B、 Don't change

C、 Reduce

3、【 Single topic selection 】 For electrical equipment in combustible dust environment, there is a gap between the rotating shaft and the shaft hole () Sealing shall be tight .（ A ）

A、 dustproof

B、 waterproof

C、 Oil proof

4、【 Single topic selection 】 The code for acceptance of explosion-proof engineering projects issued by the State Administration of work safety is ____.（ C ）

A、G

B、50058-1992

C、G

D、50257-1996

E、50257-1996

5、【 Single topic selection 】 In China, , Explosion proof electrical equipment used in explosion hazardous places ( Include 2 Explosion proof electrical equipment for area ) Must go through ____ Pass the inspection , It can be put into use only after obtaining the explosion-proof certificate .（ B ）

A、 Foreign explosion-proof inspection institutions

B、 Explosion proof inspection organization authorized by the state

C、 Enterprise technology department

6、【 Single topic selection 】 In explosion hazardous areas , Except in 2 All electrical equipment other than lighting fixtures used in the area , Special grounding wire shall be used , The cross-sectional area of the copper core shall not be less than () square millimetre .（ A ）

A、4

B、2.5

C、1.5

7、【 Single topic selection 】 In an obstacle 、 Pits and dead corners , It should be partially () Explosion hazardous area level .（ C ）

A、 Keep it as it is

B、 Reduce

C、 Improve

8、【 Single topic selection 】 In the case of no fault , Explosive gas atmospheres may occur , This area is divided into () District .（ A ）

A、1

B、0

C、2

9、【 Single topic selection 】 Most of the explosion-proof measures taken for increased safety electrical equipment are in () Measures to improve quality on the basis of .（ C ）

A、 Ordinary products

B、 Special products

C、 General products

10、【 Single topic selection 】 When the maximum possible volume concentration of flammable substances does not exceed the lower explosive limit (LEL) Of ____, It can be divided into non explosive hazardous areas ; The mixture concentration at any place in the site is close to the lower limit of the standard ____, Places that can reliably give an alarm and start effective ventilation equipment can be reduced by one level .（ A ）

A、10%;25%

B、15%;25%

C、10%;20%

11、【 Single topic selection 】 The automatic control appliance that uses the electromagnetic principle or working principle to delay the closing or opening of the contact is ( ) Relay .（ A ）

A、 Time

B、 Overcurrent

C、 heat

12、【 Single topic selection 】 When there are more than two combustible gases in the environment , Press () Select the temperature group of the gas .（ B ）

A、 High density

B、 Low ignition temperature

C、 High ignition temperature

13、【 Single topic selection 】 tire 、 Truck crane , The water temperature reaches ( ) when , Do not drive at high speed .（ B ）

A、70℃

B、80℃

C、90℃

14、【 Single topic selection 】 Generally, the enclosure height of outdoor power transformation and distribution device shall not be less than ()m.（ C ）

A、1.5

B、2.0

C、2.5

15、【 Single topic selection 】 according to GB3836.1-2010 Regulations , Explosion proof sign ExmanRIIAT3 It can be expressed as ____.（ C ）

A、

B、xmanRIIT3Ga

C、

D、xmanRcIIT3Gc

E、xmanRcIIT3Gc

F、xmanRcIIT3Gc

16、【 Single topic selection 】 Intrinsically safe safety barriers are mainly used for () Our instruments and equipment .（ A ）

A、 Grid power supply

B、 Dangerous areas

C、 Leakage protection

17、【 Single topic selection 】 According to the requirements of the State Administration of work safety , Explosion proof electrical operation is right () Various explosion-proof electrical equipment shall be installed 、 Maintenance and other operations .（ C ）

A、 all

B、 In the coal mine

C、 Except coal mine

18、【 Single topic selection 】 Installation of safety gear switch , The incoming line is connected to the normal switch of the safety gear ( ) On contact .（ B ）

A、 Turn off

B、 open

19、【 Single topic selection 】 If the motor vehicle is damaged, only one vehicle is allowed to be towed per vehicle , The length of the traction cable shall be within ( ) Between .（ A ）

A、5～7m

B、3～5m

C、8～10m

20、【 Single topic selection 】 The driver operates the car without permission , Belong to （）.（ B ）

A、 Unsafe state of equipment

B、 Human unsafe behavior

C、 people 、 matter 、 Environment matching problem

21、【 Single topic selection 】 Explosive gas environment 2 The cross-sectional area of copper conductor of zone cable is the smallest ()m㎡.（ A ）

A、1.5

B、2

C、2.5

22、【 Single topic selection 】 The lowest point of the explosion limit is called explosion ().（ C ）

A、 ceiling

B、 critical point

C、 Lower limit

23、【 Single topic selection 】 The electrical wiring conduit in explosive gas environment passes through the wall 、 floor 、 Floor time , Isolate the seal from the wall 、 floor 、 The distance between floors should not exceed ()mm.（ C ）

A、100

B、200

C、300

24、【 Single topic selection 】 Oxygen is a kind of ( ) Gas .（ C ）

A、 Flammable

B、 Combustible

C、 combustion-supporting

25、【 Single topic selection 】 Insulating gloves can be used as () Basic safety equipment for the following work .（ A ）

A、.1kV

B、.5kV

C、.10kV

26、【 Single topic selection 】 Explosion proof electrical equipment is installed in different explosion-proof areas. The threading pipe or through hole on the isolation wall is not effective () It's wrong. .（ B ）

A、 Bind

B、 plugging

C、 distance

27、【 Single topic selection 】 During filling , The cylinder body is slightly colder than usual , Mainly :( ).（ B ）

A、 The bottle valve is open

B、 The bottle valve is not opened

C、 The bottle valve is opened too large

D、 The bottle valve is too small

28、【 Single topic selection 】 The maintenance personnel of explosion-proof electrical equipment shall conduct explosion-proof electrical equipment maintenance () Training , The maintenance work can be undertaken only after assessment .（ C ）

A、 Theoretical knowledge

B、 Safety knowledge

C、 Repair knowledge

29、【 Single topic selection 】 When jogging operation mode , yes ( ) It doesn't work .（ B ）

A、 Some protective devices

B、 All protective devices

C、 Lifting device

30、【 Single topic selection 】 Several factors should be considered for explosion-proof electrical equipment , There are price aspects 、 Performance, etc , But the first condition of choice should be ().（ C ）

A、 economy

B、 Comply with regulations

C、 Safety and reliability

31、【 Single topic selection 】 When the height of the elevator shaft ≤30m when , Its vertical deviation is ( )mm.（ B ）

A、0~20

B、0~35

C、0~50

D、0~60

32、【 Single topic selection 】 To prevent dust explosion, the basic protective measure adopted on electrical equipment is to make the shell ().（ C ）

A、 Plasticizing

B、 open wide

C、 Totally enclosed

33、【 Single topic selection 】 During vehicle operation , Common circuit faults are ： Open circuit 、 A short circuit 、 No fire 、 Misfire 、 The spark is weak 、 Misfiring and ( ) etc. （ C ）

A、 Fuel consumption increases

B、 Not working properly

C、 Abnormal ignition

34、【 Multiple choice 】《 Safety Law of the people's Republic of China on special equipment 》 Regulations , The following ( ) The equipment shall be scrapped , And cancel it with the original registration authority .（ CD ）

A、 There have been many accidents

B、 Beyond the inspection cycle

C、 There are serious potential accidents , No modification 、 Maintenance value

D、 Meet other scrapping conditions specified in the safety technical specifications

35、【 Multiple choice 】 site （ factory ） The main safety components involved in the special motor vehicle are ’ Ann Whole life Pass the production simulation exam at one point ’( ).（ ABCD ）

A、 Brakes

B、 tire

C、 Hydraulic system safety valve 、 High pressure oil pipe

D、 Fork 、 chain

36、【 Multiple choice 】 During crane operation , Cause instability 、 The cause of the overturn is ：( ).（ ABCD ）

A、 overload

B、 Cable stayed cable-stayed crane

C、 Supporting ground subsidence

D、 Excessive braking inertia force or wind force

37、【 Single topic selection 】 Operators of special equipment shall work before the expiration of their certificates （） Apply for reexamination within months .（ A ）

A、 A month

B、 Three months

C、 six months

38、【 Multiple choice 】 In order to save the maintenance fee, Gong, the equipment department of a unit , Entrust an elevator of our factory to a private Li for maintenance . One day , Li took advantage of the factory holiday , Then I went to maintain the elevator , Li believes that there is no one in the factory during the holiday , After boarding the car roof on the fifth floor, the maintenance switch was not placed in the maintenance position , here , On the first floor, a migrant worker ran to the elevator door , Press the call button outside the hall , Cause the car to start and descend suddenly , Li, who was standing on the car roof, did not stand firm and fell down the shaft to die .( )（ ABD ）

A、 The elevator business cannot be handed over to unqualified private maintenance .

B、 Two or more people should maintain the elevator .

C、 When repairing the elevator , The personnel of the equipment department shall be on site .

D、 Working on the car roof , Put the maintenance switch in the maintenance position .

39、【 Multiple choice 】 The manual moving elevator car is commonly known as " Turning gear ", The following statement is correct :( )（ BC ）

A、 It shall be carried out under the maintenance operation state

B、 The operation shall be carried out by more than two licensed personnel

C、 The brake wrench and the turning hand wheel shall be placed in an obvious position at ordinary times

D、 The brake wrench is painted yellow 、 The hand wheel is painted red

40、【 Single topic selection 】 When the current flows through the human body in different ways , The severity of electric shock varies , The most dangerous way is ( ).（ D ）

A、 From left foot to right foot

B、 Through the head

C、 Through the central nervous system

D、 From left hand to front chest to back

41、【 Multiple choice 】 In hydraulic transmission, the overflow valve limits the maximum pressure of the pipeline , The general situation is ( ).（ AB ）

A、 Normally, the valve is closed

B、 Only open when the liquid pressure exceeds the maximum value

C、 Normally, the valve is open

D、 Only close when the liquid pressure reaches the maximum value

42、【 Single topic selection 】《 Safety Law of the people's Republic of China on special equipment 》 Specified in the , The unit using special equipment uses personnel who have not obtained corresponding qualifications to engage in safety management of special equipment 、 Detection and operation , The legal liability to be borne is ( ).（ B ）

A、 Revocation of business license

B、 Order to make corrections within a time limit ; Failing to correct within the time limit , Order to stop using relevant special equipment or suspend production or business for rectification , Impose a fine of not less than 10000 yuan but not more than 50000 yuan

43、【 Multiple choice 】 In case of fire in electrical equipment during crane operation ( ) Fire fighting .（ ABD ）

A、 The power supply should be cut off immediately

B、 use 1211 Fire extinguisher

C、 Foam extinguisher

D、 Use a carbon dioxide fire extinguisher

44、【 Multiple choice 】 Functions of supports and hangers :( ).（ ABCD ）

A、 Support the weight of the pipe

B、 Secure the lines

C、 Control the displacement of the pipeline

D、 Prevent pipe vibration and balance medium reaction

45、【 Multiple choice 】 To develop 《 Safe production method 》 Purpose ：( ).（ ABCD ）

A、 In order to strengthen the supervision and management of work safety

B、 Prevent and reduce production safety accidents

C、 Ensure the safety of people's lives and property

D、 Promote economic development

46、【 Judgment questions 】T6 Is the most dangerous gas temperature group , Where satisfied T6 Electrical equipment for gas environment of temperature group , It must also satisfy T1~T5 Application requirements for gas environment of group .（ √ ）

47、【 Judgment questions 】 The button control panel of the electric hoist shall be equipped with an emergency switch .（ √ ）

48、【 Judgment questions 】 When the lifting object needs to pass over the position where the ground personnel are standing , After the signal is sent , Can pass .（ × ）

49、【 Judgment questions 】 When filling the vehicle with fuel , The engine should be shut down .（ √ ）

50、【 Judgment questions 】 The filling station is only responsible for the filling quality of gas cylinders , There are special transportation problems such as the configuration of gas cylinders and caps 、 Or the department using it and the user are responsible for .（ × ）

51、【 Judgment questions 】“IP” No number in the back means that the shell has no special protection .（ √ ）

52、【 Judgment questions 】“n” Type A is a special type suitable for 2 Explosion proof type of electrical equipment used in explosive gas hazardous areas .（ √ ）

53、【 Judgment questions 】 What is the current national standard for paint color and mark GB7231《 Basic identification colors and symbols for industrial pipelines 》（ √ ）

54、【 Judgment questions 】 For quick loading and unloading, the hook can not be equipped with anti falling device .（ × ）

55、【 Judgment questions 】 Reversible electric winch can be reversed suddenly during startup .（ × ）

56、【 Judgment questions 】 Propane is an explosive gas · Safety student production simulation Pass the exam at one o'clock ·ⅡA The representative gas of stage .（ √ ）

57、【 Judgment questions 】 Accessories are damaged 、 Incomplete or unqualified gas cylinders cannot be filled .（ √ ）

58、【 Judgment questions 】 The control and protection of the compressor shall be equipped with automatic and manual shutdown devices , When the exhaust temperature of each stage is greater than the limit value , Alarm and manual shutdown shall be given .（ √ ）

59、【 Judgment questions 】 Transmission system of hydraulic transmission vehicle , By the hydraulic torque converter 、 transmission 、 main reducer 、 Differential and axle shaft etc .（ √ ）

60、【 Judgment questions 】 Electrical equipment protected by flameproof enclosure is called flameproof electrical equipment , It belongs to 1 Explosion proof technology in area , As long as the enclosure protection requirements are met (≥IP54) That's all right. ; Electrical equipment protected by this explosion-proof technology can only be used for 1 District ( or 2 District ) Explosive gas hazardous areas .（ × ）

61、【 Judgment questions 】 The only electrical equipment that can be used in the hazardous environment of combustible dust is AB Two types of . The selection of electrical equipment is based on the conductivity and non conductivity of dust .（ × ）

62、【 Judgment questions 】《 Safety Law of the people's Republic of China on special equipment 》 Regulations , The production unit of special equipment shall ensure that the production of special equipment meets the requirements of safety technical specifications and relevant standards , Be responsible for the quality of the special equipment they produce .（ × ）

63、【 Judgment questions 】 In dangerous explosive gas environment , The order of dangerous degree of combustible gas is T6>T5>T4>T3>T2>T1,IIC>IIB>IIA,IIA level ,T1 Group combustible gas has the most stringent requirements for equipment .（ × ）

64、【 Judgment questions 】 The driven wheel transmits torque on the rotating shaft .（ × ）

65、【 Judgment questions 】 Installation inspection of intrinsically safe electrical equipment 、 Safety production simulation Exam one Diantong 、 in , It shall be checked that the intrinsically safe circuit is isolated from the ground or grounded at only one point .（ √ ）

66、【 Judgment questions 】《 Safety Law of the people's Republic of China on special equipment 》 Regulations ： Special equipment, including its attached safety accessories 、 Safety protection device .（ √ ）

67、【 Judgment questions 】 Used in explosive gas environment Ⅱ class 、Ⅲ Class I electrical equipment , According to the maximum allowable surface temperature, it can be divided into T1–T6 Group .（ × ）

68、【 Judgment questions 】 Frequently sprinkle water on the ground of the filling room , In order to keep the indoor humidity high .（ √ ）

69、【 Judgment questions 】 The function principle of the pressure reducing valve is to use some components to change the clearance between the valve core and the valve seat , Throttling occurs when the fluid passes through , So as to achieve the purpose of automatic pressure regulation .（ √ ）

70、【 Judgment questions 】 Enclosure of increased safety electrical equipment , There are no specific and strict requirements , So the design cost is low , It can be widely used in 1 Explosive hazardous areas .（ × ）

71、【 Judgment questions 】 The stress direction of the steel wire rope is perpendicular to the pin axis of the snap ring .（ √ ）

72、【 Judgment questions 】 Electrical equipment in explosion hazardous areas shall be internally and externally grounded .（ √ ）

73、【 Judgment questions 】 The shell or ventilation duct of positive pressure electrical equipment and its sealing gasket are damaged and need to be replaced or repaired , It can be repaired with general industrial repair technology “ newest analysis “ The reason is , However, the air tightness of equipment and pipelines shall be ensured .（ √ ）

74、【 Judgment questions 】《 Hoisting command signal 》 Not applicable to mine hoisting equipment 、 Manned elevator equipment .（ √ ）

75、【 Judgment questions 】 The main technical measure of positive pressure explosion-proof electric appliance is to exchange air with air and inert gas , Cut off the main power supply when the internal pressure is higher than the specified value .（ × ）

76、【 Judgment questions 】 Oil immersed explosion-proof type , Generally speaking, the protective fluid ( oil ) There are no requirements , However, reliable protective fluid must be provided ( oil ) Liquid level monitoring device .（ × ）

77、【 Judgment questions 】 Explosion hazardous places 2 Lighting fixtures in the area may not be equipped with special grounding wires , The process pipe, ventilation pipe and metal container wall of oil can be used as protective grounding wire .（ × ）

78、【 Judgment questions 】 Cables and their accessories in explosive gas environment shall be installed and used , It shall be able to prevent external mechanical damage 、 Corrosive or chemical effects .（ √ ）

79、【 Judgment questions 】 There is a corresponding relationship between the temperature group of explosive gas and the temperature group of selected equipment .（ × ）

80、【 Judgment questions 】2014 year 1 month 1 Effective as of 《 Safety Law of the people's Republic of China on special equipment 》 The special equipment mentioned in refers to the special equipment involving life safety 、 Boiler with high risk 、 Pressure vessel （ Including gas cylinders ）、 Penstock 、 The elevator 、 Hoisting machinery 、 Passenger ropeways and large amusement facilities are seven types of equipment .（ × ）

81、【 Judgment questions 】 Before charging the battery , Must be right ” Safety production simulation exam A little ” Charging equipment 、 Conduct a comprehensive inspection of rheostat and instrument , In case of failure or malfunction , It should be eliminated before charging .（）（ √ ）

82、【 Judgment questions 】 be used for 0 Explosion proof electrical equipment in the zone can be used for 1 District , be used for 0 Area and 1 The equipment in the zone can be used for 2 District .（ √ ）

83、【 Judgment questions 】 It is strictly prohibited to use gasoline and other inflammables to wipe the vehicle , Clean parts .（ √ ）

84、【 Judgment questions 】 The direction of gravity on an object is not always vertical down .（ × ）

85、【 Judgment questions 】 The relay is used to directly control the main circuit .（ × ）

86、【 Judgment questions 】 Pipelines are divided into corrosive medium pipelines and non corrosive medium pipelines according to the corrosivity of the transmission medium .（ √ ）

87、【 Judgment questions 】 Equipment protection level (EPL) by Da Explosion proof electrical equipment , Only applicable to 20 Areas with explosive dust hazards .（ × ）

88、【 Judgment questions 】 In a vehicle accident , The driver is careless and too fast , There is no distance between cars, etc , It's a driver's behavior mistake .（ √ ）

89、【 Judgment questions 】 The battery capacity display in the battery yard is used to display the remaining battery capacity , It can remind the driver to charge in time .（）（ √ ）

90、【 Judgment questions 】 The oxygen filling station must have portable detection instruments to identify combustible gases .（ √ ）

91、【 Judgment questions 】 The current limiting protector is used to protect the overload and short circuit of the circuit .（ √ ）

92、【 Judgment questions 】《 Safety Law of the people's Republic of China on special equipment 》 Regulations , After handling the use registration of special equipment , Even if it is not inspected regularly or fails to pass the inspection , Can still be used .（）（ × ）

93、【 Judgment questions 】 adopt “ see 、 listen 、 try ” Judge whether the person who gets an electric shock breathes autonomously , Look at the chest 、 Whether the abdomen fluctuates , Listen to the sound of air flow , Check whether there is exhalative air flow in the mouth and nose , If none , It can be judged that there is no spontaneous breathing .（ √ ）

94、【 Judgment questions 】 Before troubleshooting the bottle valve , The nature of the gas in the bottle must be clarified , Otherwise, do not touch the bottle valve .（ √ ）

95、【 Judgment questions 】 The operation of explosion-proof electrical equipment requires a certain working environment , The ambient temperature is required not to exceed -20℃—+40℃, But if it's in +60℃ Use in the environment , A fan should be added to continuously blow the equipment to dissipate heat before it can be used .（ × ）

96、【 Judgment questions 】 The electric spark or any thermal effect generated by the circuit of energy limiting electrical equipment cannot ignite the specified combustible gas or vapor .（ √ ）

97、【 Judgment questions 】 The installation requirements of the plug of flameproof electrical equipment shall be when the plug is inserted , The grounding or neutral contact shall be connected first ; When the plug is pulled out , The main contact shall be disconnected first .（ √ ）

98、【 Judgment questions 】 The flameproof surface of flameproof electrical equipment shall be provided with anti-corrosion measures .（ √ ）

99、【 Judgment questions 】 Static electricity is a relatively static positive and negative charge that temporarily pushes the balance in the macro scope .（ √ ）

100、【 Judgment questions 】 Zener safety barrier must be reliably grounded during use , The isolated safety barrier does not need to be grounded when in use .（ √ ）

Support accurate explosion-proof electrical operation examination questions in all regions of the country , Support safety certificate , Special operation certificate , Exercises on the question bank of vocational skill appraisal and other types of work .