question bank source: Production Safety Simulation Examination Yitong Official Account Mini Program
2022 Electrician (Intermediate) Examination Question Bank is the selected question bank for the Electrician (Intermediate) review question bank! The 2022 Electrician (Intermediate) Examination Question Bank The operation of the simulation examination platform is based on the new version of the Electrician (Intermediate) textbook outline. Electrician (Intermediate) examination materials can be practiced at any time based on the production safety simulation examination Yitong intelligent question bank.
1. [Single choice question] 25# insulating oil indicates that the freezing point is (). (C)
A, -15℃
B, -20℃
C, -25℃
D, -35℃
2, [Single choice question] When installing the indoor terminal of the 6KV polyvinyl chloride insulated cable, the steel armor should be sawed from the plastic section ( ). (B)
A, 10mm
B, 30mm
C, 15mm
D, 45mm
3, [Single choice question] When a three-phase asynchronous motor uses Y-step down to start, the starting torque is ( ) times that of the full pressure starting of △ connection method.. (D )
A, √3
B, 1/√3
C, √3/2
D, 1/3
4, [Single choice question] There are () ways to connect three-phase loads. (C)
A, 4
B, 3
C, 2
D, 1
5, [Single choice question] The following models of time relay belongs to the transistor time relay is (). (B)
A, JS17
B, JS20 and JSJ
C, JS7-2A
D, JDZ2-S
6, [Single choice question] The following power supply phase sequence ( ) is the regular phase sequence. (A)
A, U→V→W
B, W→V→U
C, U→W→V
D, V→U→W
7, [Single choice question] The error of severely distorting the measurement results is called (). (C)
A, Occasional error
B, System error
C, scatter error
D, absolute error
8, [Single choice question] The neutral point is not grounded, and the form of grounding of the device shell is called (). (B)
A, protective zero
B, protective ground
C, ground or zero
D, uncertain
9, [Single choice question] When the AC motor performs withstand voltage test , for motor with a rated voltage of 380V and a power within 1-3KW, the test voltage is ( ) volts. (C)
A, 500
B, 1000
C, 1500
D, 2000
10, [Single choice question] The power amplification ratio of the interchange motor expander can reach ( ) (C )
A, 20~50
B, 50~200
C, 200~50000
D, 5000~100000
11, [Single choice question] () Causes damage to the furnace wall and structure, causing shutdown and casualties. (B)
A, furnace tube explosion
B, furnace explosion
C, soda water teng
D, boiler explosion
12, [Single choice question] What are the fire hazards in the material stacking area in the picture ()?
(B)
A, occupying fire passage
B, not equipped with fire extinguisher
C, not setting fire water belt
D, no fire watcher
13, [Single choice question] No ( ) measures should be taken for maintenance and storage of instruments.(B)
A, keep dry
B, place it around a strong magnetic field
C, gently put
D, wipe cotton yarn
14, [Single choice question] When performing a voltage resistance test, DC motor should be in ( ) state ( A )
A, stationary
B, start
C, forward running
D, reverse running
15, [Single choice question] Using AC voltmeter to determine the transformer ratio, in addition to specifying the instrument accuracy and reading method, there are also () regulations. (C)
A,
B, three-phase balance
C, the applied voltage is less than 25% of the rated voltage on the input side
D, 1~25% of the rated voltage on the low voltage side
16, [Single choice question] photoelectric switch can ( ) quickly detect and control the state of various solids, liquids, transparent bodies, bold bodies, soft bodies, smoke and other substances without damage. (C)
A, high brightness
B, small current
C, non-contact
D, electromagnetic induction
17, [Single choice question] The descriptions about the error of "lightning arrester" include (). (D)
A. When the voltage is normal, the gap is only used for isolation.
B. Valve-type lightning arrester can be directly connected to the power grid
C. Magnetic valve-blowing lightning arrester mainly relies on magnetic field coil arc extinguishing
D. Tube-type lightning arrester can be directly connected to the power grid
18. [Single choice question] The following statement about the composition of unidirectional thyristor is correct (). (B)
A, can be equivalently regarded as composed of three transistors
B, can be equivalently regarded as composed of one NPN, one PNP transistor
C, can be equivalently regarded as composed of two NPN transistors
D, can be equivalently regarded as composed of two PNP transistors
19, [Single choice question] When a single-phase AC power meter works, the rotation torque of the aluminum disk is generated by the interaction of ( ) magnetic flux and the eddy currents generated by each. (B)
A, one
B, two
C, three
D, four
20, [Single choice question] The work of transformer core compression must be carried out in (). (D)
A, from left to right
B, from right to left
C, from both sides to middle
D, from middle to both sides
21, [Single choice question] " Production Safety Law of the People's Republic of China " stipulates that if the production and operation unit refuses or obstructs the department responsible for the supervision and management of production safety supervision and inspection in accordance with the law, it shall be ordered to correct the situation; if it refuses to correct the situation, it shall be fined (); the directly responsible supervisor and other directly responsible persons shall be fined not less than RMB 10,000 and not more than RMB 20,000; if it constitutes a crime, criminal liability shall be pursued in accordance with the relevant provisions of the Criminal Law. (D)
A,
A,
B,
00,
C,
C,
00,
D,
D,
00,
D,
00 or more than 200,000
22, [Single choice question] When the transformer is used for step-down, it can output a larger (). (B)
A, power
B, current
C, electrical energy
D, voltage
23, [Single choice question] The arrangement of the three-phase windings with electrical angles that differ by 120° in spatial positions respectively, and a rotating magnetic field will be generated between the air gap between the stator and the rotor.(D)
A, DC
B, alternating current
C, pulsating direct current
D, three symmetric alternating current
24, [Single choice question] The "Implementation Measures for the Common Responsibility of the Party and Government of Hubei Province" proposes: Support the government to perform its duties of safety work in accordance with the law, give full play to the role of () in the supervision and promotion of safety work, and the democratic supervision role of the CPPCC in the work of safety work, (B )
A, association
B, Renmin University
C, Discipline Inspection Commission
D, Media
25, [Single choice question] The insertion and rope sleeve destroy the twisting state of the wire rope and reduce the breaking tension. When the wedge and wedge sleeve are used to firmly connect, the reduction cannot exceed (). (C)
A, 0.15
B, 0.2
C, 0.25
D, 0.3
26, [Single choice question] The () fire extinguishing agent is suitable for extinguishing fires in flammable gases, liquids and electrical equipment. (C)
A, D-type dry powder
B, ABCD-type dry powder
C, BC-type dry powder
D, foam
27, [Single choice question] During the regular maintenance of medium and small power transformers, if you find porcelain casing (), you only need to do simple processing without replacement. (A)
A, not clean
B, thread damage
C, discharge traces
D, crack
28, [Single choice question] When the value of the base current iB is large, it is easy to cause the static working point Q to approach (). (B)
A, cutoff area
B, saturation area
C, dead area
D, cross-over distortion
29, [Single choice question] The outside of the scaffold should be set up in accordance with regulations, and the safety net should be set on the outer side of the scaffolding (). (A)
A, inner
B, outer
C, center
D, all can
30, [Single choice question] The one that is sticky and easy to convert into secondary scale is () water slag. (C)
A, calcium carbonate
B, sodium hydroxide
C, magnesium phosphate
D, alkaline sodium phosphate
31, [Single choice question] For small DC motors without commutation poles, the constant load is rotated in one direction. In order to improve commutation, its brush can be turned along the armature from the geometric surface ( ). (B)
A, appropriately move β angle
B, appropriately move β angle
C, forward 90°
D, backward to the main magnetic pole axis
32, [Single choice question] For small DC motors without commutation poles, the constant load rotates in one direction. In order to improve commutation, safe production simulation test, the brush can be turned along the armature from the geometric surface (). (B)
A, appropriately move β angle
B, appropriately move β angle
C, forwardly move 90°
D, backwardly move
33, [Single choice question] The valve-type lightning arrester in power plants and substations must be measured before the ( ) season of each year. (D)
A, spring
B, summer
C, autumn
D, thunderstorm
34, [Single choice question] " Construction Engineering Safety Management Regulations " stipulates that the survey unit shall conduct surveys in accordance with (), and the survey documents provided shall be true and accurate to meet the needs of construction engineering safety production. (D )
A, mandatory standard for engineering construction
B, laws, regulations and contract agreements
C, contract agreements and mandatory standard for engineering construction
D, laws, regulations and engineering construction mandatory standard
35, [Single choice question] Turning the kinetic energy of the DC motor armature into electrical energy consumption is called ().(C)
A, reverse braking
B, feedback braking
C, energy consumption braking
D, mechanical braking
36, [Single choice question] During the maintenance of underground continuous wall , it is strictly forbidden to walk, stop or work nearby. (B)
A, small machinery
B, heavy machinery
C, personnel
D, trolley
37, [Single choice question] When performing gas welding operation as shown in the figure, the following statement is wrong ()
(B )
A, gas cylinder is not used, fixed gas cylinder is loaded with
B, gas cylinder can be placed horizontally and
C, application should be made before fire operation
D, gas welding operation is a special operation
38, [Single choice question] Liquefied petroleum gas hose, blasting pressure should be greater than () times the working pressure. (D)
A, 1
B, 3
C, 2
D, 4
39, [Single choice question] It is known that the sine AC voltage u=220sin (314t-30°) will be (). (D)
A, 30
B, 220
C, 50
D, 100π
40, [Single choice question] The special construction plan for safety of sub-part projects with greater risk (hereinafter referred to as the "special plan") refers to the security technical measures file compiled by the construction unit on the basis of preparing the total design of construction organization for the more dangerous sub-part projects () on the basis of preparing the overall design of construction organization . (B)
A, comprehensive
B, separate
C, combined
D, timely
41, [Single choice question] If construction lifting machinery needs () during use, the user unit entrusts the original installation unit or the installation unit with corresponding qualifications to implement it in accordance with the special construction plan, and it can be put into use. (C)
A, add section
B, attach
C, jack
D, climb
42, [Single choice question] There are ( ) methods to limit the starting current of the DC motor. (A)
A, 2
B, 3
C, 4
D, 5
43, [Single choice question] A construction site is erecting a cantilevered external scaffolding, but the supervisor safety engineer raised the safety hazards on the site and asked to suspend the erecting of external scaffolding immediately. What are the safety hazards in the picture below? ()
(B)
A, workers are not wearing anti-slip shoes
B, shelf workers do not hang safety belt
C, debris are piled on the outer rack
D, external scaffolding is not hanged with safety net
44, [Single choice question] Production and operation units shall take the following measures for major hazard sources: set up () and safety risk notice signs in obvious locations where major hazard sources are located, and indicate emergency measures, etc. (B)
A, security publicity poster
B, security warning sign
C, security advanced public announcement
D, security violation penalties
45, [Single choice question] According to the time when load occurs in the power system, load can be divided into () category. (B)
A, 2
B, 3
C, 4
D, 5
46, [Single choice question] The density of steel is ()t/m. (B)
A, 7.25
B, 7.85
C, 8.55
47, [Single choice question] When mapping the wiring diagram of electrical control circuits of machine tool electrical equipment based on actual measurement and measurement, the drawing should be based on ( ). (D)
A, actual size
B, larger than actual size
C, smaller than actual size
D, a certain proportion
48, [Single choice question] The safety of the construction site is responsible for ().(C)
A, construction unit
B, supervision unit
C, construction enterprise
D, project management unit
49, [Single choice question] According to the provisions of the "Construction Law", construction enterprises shall formulate corresponding safety technical measures according to () when preparing construction organization design. (A)
A, characteristics of construction projects
B, requirements of construction units
C, characteristics of this unit
D, requirements of competent departments
50, [Single choice question] Hydrogen arc welding is an arc welding method using inert gas (). (C )
A, oxygen
B, hydrogen
C, argon
D, neon
51, [Single choice question] Speed test generators are often used as ( ) components in automatic control systems and computing devices. (C)
A, power supply
B, load
C, solution
D, amplification
52, [Single choice question] Weekly safety production inspection is led by the project manager, organized by (), and the person in charge of relevant departments and subcontracting units, and full-time project safety management personnel participate, and inspections are carried out in accordance with relevant safety inspection standards. (A)
A, security department
B, mass department
C, technical department
D, data department
53, [Single choice question] DC double-arm bridge is composed of ( ) standard resistor and a measured resistor. (C)
A, 1
B, 2
C, 3
D, 4
54, [Single choice question] Heat the metal to a certain temperature, keep it for a certain time, and then cool to room temperature at a certain cooling speed. This process is (). (B)
A, hot processing
B, heat treatment
C, heating process
D, cooling process
55, [Single choice question] The main problem with DC amplifier is (). (B)
A, cutoff distortion
B, saturation distortion
C, crossover distortion
D, zero point drift
56, [Single choice question] The direct starting current of a DC motor can reach ( ) times the rated current of . .Safe Production Simulation Exam One-to-one. (A)
A, 10~20 (1.5~2.5 times should be controlled)
B, 20~40
C, 5~10
D, 1~5
57, [Single choice question] When DC voltage withstand test , when the test transformer has only one lead casing, microamps is connected in series to (). (A)
A, high-pressure end
B, low-pressure end
C, high-pressure end or low-pressure end
D, no specified
58, [Single choice question] If you want to read the power diagram data of a certain well in the station control system, you can select the well and click (). (D)
A, single well power diagram
B, analytical power diagram
C, superimposed power diagram
D, manual reading power diagram
59, [Single choice question] The main occupational hazards that welders come into contact with are (). (D)
A, infrared
B, ultraviolet
C, vibration
D, manganese dust (smoke)
60, [Single choice question] If the insulation of the transformer is damp, it will () when conducting a voltage withstand voltage test. (A)
A, make insulation break down
B, winding heats during the test, causing the insulation to dry, restore normal
C, has no impact on
D, endangering the personal safety of operators
61, [Single choice question] When stroke is on the front-mounted beam oil pump, the crank rotates about ().(C)
A, 165°
B, 180°
C, 195
D, 215°
62, [Single choice question] Citizens should enhance their awareness of environmental protection, adopt a low-carbon and frugal lifestyle, and consciously implement (). (A)
A, environmental protection obligations
B, environmental protection rights
C, environmental monitoring responsibilities
D, environmental supervision responsibilities
63, [Single choice question] When mapping parts, the first thing to do is to do is to (). (D)
A, drawing parts diagram
B, drawing assembly diagram
C, disassemble into parts
D, analyze and study
64, [Single choice question] According to the provisions of the " Road Transport Regulations ", the following does not meet the conditions for drivers engaged in passenger transport operations (). (D)
A, obtain the corresponding motor vehicle driver's license
B, age not exceeding 60 years old
C, pass the examination of basic knowledge of passenger transport laws and regulations, motor vehicle maintenance and passenger first aid by municipal road transportation management agencies with districts
D, and one or more major traffic accidents occurred within three years
65, [Single choice question] The input resistance of the multi-stage amplification circuit of the resistor-capacitance coupling device is equal to, ( ) ( A )
A, first-stage input resistance
B, sum of input resistances at each level
C, product of input resistances at each level
D, unstage input resistance
66, [Single choice question] Reducing the () of the power line can save electricity. (C)
A, current
B, voltage
C, power supply loss
D, conductance
67, [Single choice question] The unit that needs to occupy the site outside the planned land to apply for approval procedures in accordance with the law is (). (A)
A, construction unit
B, design unit
C, supervision unit
D, construction unit
68, [Single choice question] At around 7:05 am on March 6, a certain construction site was hit by an object accident. One person died. At 6:30 am on March 6, Hong Moumou, a shelf team worker of a construction site project department, and Feng Moumou, carried out the demolition of external scaffolding on the 18-19th floor of Building 4. When the fifth scissors supported steel pipe was removed (at this time, Hong Moumou was at the 19th floor above and Feng Moumou was at the 18th floor below), the two agreed that Hong Moumou would untie the top fastener (there are four fasteners in this steel pipe) and grab the steel pipe. After Feng Moumou untie the remaining three, the latest analysis, the fastener, then lift the steel pipe out together. At around 7:05, when Feng was untiing the last fastener, he thought Hong was still holding the steel pipe (Hong did not grasp it at this time, nor did he inform Feng below), causing the six-meter-long steel pipe to fall. At the same time, three workers including Tan Moumou (who did not wear a hard hat) who was subcontracted by another company happened to pass by downstairs No. 4 to go to work. The falling steel pipe just hit Tan Moumou's head, causing him to fall to the ground, bleeding heavily, and respond. He was then sent to the hospital and died after failed rescue.
(2) The dangerous source of possible object strike accidents in scaffolding projects is (). (A)
A. The method of personnel and materials reaching the work platform is unreasonable.
B. No briefing and acceptance
C. The frame protection does not meet the requirements
D. The scaffolding material does not meet the requirements
69. [Single choice question] The lifting is carried out by the anchor point lifting method. The strength and stability of the workpiece under various () during lifting should be calculated, and reinforcement measures should be taken if necessary. (C)
A, normal state
B, favorable state
C, unfavorable state
D, windless state
70, [Single choice question] The purpose of high-voltage load switch is ().(C)
A, used to cut off short-circuit fault current
B, can cut off both load current and fault current
C, mainly used to cut off and close the rated current
D, used to cut off no-load current
71, [Multiple choice question] The special plan for disassembly of tower cranes should include the following contents: (). (ABCDE)
A, project overview;
B, disassembly order;
C, weight of components and lifting point position;
D, power supply settings;
E, construction personnel configuration;
72, [Multiple choice question] When production and operation units make business decisions involving safe production, they should listen to the opinions of () and (). (BD)
A, board of directors
B, production safety management agency
C, safety association
D, production safety management personnel
E, main management personnel
73, [Multiple choice question] Before the open-air blasting operation is detonated, it should be set () outside the safe distance () (AC )
A, warning sign
B, fire extinguishing equipment
C, isolation fence
D, publicity slogan
E, enterprise identity
74, [Multiple choice question] The basic requirements for fire prevention principle are (). (ABCDE)
A, strictly control the fire source
B, monitoring the brewing period characteristics
C, using refractory building materials
D, taking isolation measures to prevent the spread of flames
E, limiting the scale of possible development of fire
75, [Multiple choice question] lifting mechanism main components are: () chassis, bearing seat and security devices. (ABCD)
A, motor
B, gearbox
C, brake
D, reel
76, [Multiple choice question] The new " Safety Production Law " mainly concerns the safety production obligations of practitioners are (). (ABCD)
A, that is, abide by the rules and regulations, obey the management
B, wear and use labor protection supplies
C, receive training, master safety production skills
D, report potential accident hazards in a timely manner
E, only obey the general contract management
77, [Multiple choice question] The applicable places for Class II handheld power tools are (). (AB)
A,
B in humid places,
C on metal components,
D in boiler,
E in trenches,
E in pipelines,
78, [Multiple choice question] mobile pressure vessel filling unit should be equipped with ( ) suitable for filling. (ABCD)
A, technical person in charge
B, security management personnel
C, filling personnel
D, inspector
79, [Multiple choice question] The () of the cantilever operation platform should be set on a stable main structure and should be reliablely connected. (ABC)
A, shelf point
B, pull node point
C, support point
D, identification sign
E, operation platform
80, [Single choice question] Load sensor equipment can be divided into circles and () according to its appearance, and the safety production simulation exam is one point. (B)
A, square
B, U-shaped
C, triangle
D, semicircular
81, [Multiple choice question] The following () situations should be held accountable by the relevant departments in accordance with relevant regulations by the relevant leaders and directly responsible persons, and necessary administrative and economic penalties should be imposed.(ABCD)
A, concealing the accident without reporting, falsely reporting
B, intentionally delaying the accident without reporting
C, intentionally destroying the accident site
D, refusing to accept investigation without legitimate reasons
E, refusing to provide relevant information and information
82, [Multiple choice question] Safety information at the construction site of the construction unit covers many aspects, including (), etc. (ABCD)
A, project site, material information
B, project environmental protection information
C, project safety protection information
D, project security fire protection information
E, project material bidding information
83, [Single choice question] In the test of titrating NaOH solution with sulfuric acid, the color change at the end point was (). (B)
A, yellow turns red
B, yellow turns orange
C, orange turns red
84, [Multiple choice question] The model of the pipe header device should be in line with (). (AC)
A, pipeline model
B, pipeline usage
C, Hydrogeological Conditions
D, construction sequence
E, excavation depth
85, [Multiple choice question] The vertical conveying pipeline of the concrete pump can be directly connected to the pump output port. (×)
86. [Multiple choice question] () In the three-phase circuit, the line voltage is the voltage between the two phases. (√)
87. [Judgement Question] When the weldment is temporarily fixed, it can be carried out by personnel cooperating with the welding work. () ( × )
88. [Multiple choice question] The installation and dismantling of construction lifting machinery and overall lifting scaffolding, formwork and other self-lifting installation facilities at the construction site can also be undertaken by units without the corresponding construction contracting qualifications. () ( × )
89. [Multiple choice question] You can perform excavation operations on the foundation of scaffolding and adjacent areas. () ( × )
90. [Judgement Question] " Shandong Province Special Equipment Safety Supervision Regulations " stipulates that if special equipment is intended to be deactivated for more than one year, the user shall inform the original registered special equipment safety supervision and management department in writing when completing the discontinuation procedures. (√)
91. [Judgement Question] After the validity period of tank-type vehicles and tank bodies expire, tank-type vehicles and tank bodies must be re-inspected by a professionally qualified inspection agency before they can be put into use. (√)
92. [Multiple choice question] When the electrical equipment at the construction site is temporarily deactivated or maintained by mechanical equipment, the box door must be locked. () ( × )
93. [Judgement Question] When adjusting the opening angle of the CS2 manual operating mechanism, the pull rod component should be adjusted. (×)
94. [Judgement Question] PLC cannot be applied to process control (). (×)
95. [Multiple choice question] Belt oil pumping machine is suitable for large pump liquid extraction, small pump deep pump and heavy oil mining. (√)
96. [Multiple choice question] The main circuit for reverse braking of the three-phase asynchronous motor power supply is similar to the inverted main circuit (). (√)
97. [Judgement Question] The function of grounding is to prevent electric shock due to damage to electrical equipment insulation. (×)
98. [Multiple choice question] Welding rods must be stored in a well-ventilated indoor warehouse. (√)
99. [Multiple choice question] The resonant overvoltage belongs to the external overvoltage. (×)
100. [Multiple choice question] The frequency table of the electric system measurement mechanism is used, which is only suitable for installation type. (×)
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