Ask Shantou 20 1 1 electrician operation certificate examination questions

First, multiple-choice questions (65438+ 0 points for each question, ***30 points)

1, see the following signs in the working environment, indicating (b)

A. Pay attention to safety B. Watch out for electric shock C. Watch out for infection

2, international regulations, voltage (C) volts below don't have to consider to prevent the danger of electric shock.

36 volts B.65 volts C.25 volts

3. The red line in the three-wire cable represents (B).

A. neutral line B. live line C. ground line

4. During power outage maintenance, which of the following signs should be hung on the operating handle of the switch or circuit breaker, and once it is closed, it can be sent to the work place? (3)

A. Work here "B. Stop, high voltage danger" C. No closing, someone is working "

5, electric shock accidents, the vast majority of (a) lead to personal injury or death.

A. The human body receives electric current and receives electric shock. B. Burn C. Electric shock

6, if the electric shock is seriously injured, breathing stops or the heart stops beating, should try to implement (c) and chest compressions.

A. Massage B. Acupoints C. Artificial respiration

7. Which of the following fire extinguishing methods can't be used when the electrical appliance is on fire? (3)

A. put out the fire with carbon tetrachloride or 12 1 1 fire extinguisher B. put out the fire with sand C. put out the fire with water.

8, the highest electrostatic voltage can reach (b), can be discharged at the scene, produce electrostatic sparks, cause a fire.

A.50 volts B. Tens of thousands of volts C 220 volts

9, the use of leakage protector is to prevent (a).

A. Electric shock accident B. Voltage fluctuation C. Charging overload

10, what adverse reactions will the operator have under the action of high-frequency electromagnetic field for a long time? (3)

A. Dyspnea B. Neuropathy C. Fatigue and weakness

1 1. Which of the following fire extinguishers is suitable for extinguishing electrical fires? (1)

A. Carbon dioxide fire extinguisher B. Dry powder fire extinguisher C. foam extinguisher

12, metal ladders are not suitable for the following workplaces? (1)

A. workplaces with electric shock opportunities B. pits or closed places C. aerial work

13. When the high-voltage wire is disconnected on the ground, personnel are forbidden to enter within a few meters of the disconnection point. (2)

10

14. Which of the following precautions is correct when using hand-held power tools? (2)

A. use a universal socket B. use a leakage protector C. wet your body or clothes.

15, the dangerous voltage of electric shock accidents generally starts from (C) volts.

A.24 B.26 C.65

16. When using electrical equipment, due to untimely maintenance, when (a) enters, it may lead to a short circuit accident.

A. conductive dust or fibers B. strong light radiation C. hot air

17, when the fixed wire socket in the factory is damaged, it will cause (c).

A. inconvenient work, B. unsightly, C. electric shock injury

18, which of the following is the voltage of civil lighting circuit? (3)

A. the DC voltage is 220 volts.

L9, maintenance of high voltage motor. Which of the following behaviors is wrong? (3)

A. Implement power failure safety measures first, and then repair the circuits of high-voltage motors and their accessories.

B. When it is necessary to power on the high-voltage motor and its starting device after the overhaul, let all personnel leave the site first, and then send power for trial operation. C. Maintain the grounding wire of the running high-voltage motor.

20. Which of the following statements about using leakage protector is correct? (1)

A. The leakage protector can be used to protect personal safety and to supervise the grounding insulation of low-voltage systems or equipment. B the line behind the installation point of leakage protector shall not be insulated from the ground.

C. In daily use, the leakage protector should not press the experimental button when it is energized to test whether it is sensitive and reliable.

2 1, install leakage protector, which is the safety technical measure? (1)

A. Basic safety measures B. Auxiliary safety measures C. Absolute safety measures

22, the human body under the action of electromagnetic field, because (c) will make the human body by different degrees of damage.

A. Current B. Voltage C. Electromagnetic wave radiation

23, if the workplace is wet, in order to avoid electric shock, people who use hand-held power tools should (b).

A. stand on the iron plate for operation B. stand on the insulating rubber plate for operation C. wear anti-static shoes for operation.

24, lightning discharge has the characteristics of (a).

A. high current and high voltage B. low current and high voltage C. high current and low voltage

25, the light and dark sockets in the workshop are generally not less than (a) how many meters from the ground?

A.0.3 B.0.2 C.0. 1m

26, electrical equipment, fire extinguishing, what can't use a fire extinguisher? (3)

A. Carbon tetrachloride fire extinguisher B. Carbon dioxide fire extinguisher C. foam extinguisher

27, any electrical equipment before there is no electricity, how (c) thinking?

A. there is no electricity. B. maybe there is electricity. C. there is electricity

28, the use of electrical equipment in accordance with the relevant safety regulations, the shell should have what protective measures? (2)

A. No B. Protective grounding or grounding C. Rust-proof paint

29.(a) should be used in the electronic backplane welding and foot cutting process.

A. Wear protective glasses B. Wear ear protectors C. Wear a helmet.

30, workers engaged in electrical work, such as see the following signs, said (b).

A. pay attention to safety B. pay attention to cables C. pay attention to motor injuries.

Fill in the blanks (2 points for each question, 20 points for * * *)

1, protection to zero refers to the neutral (metal) part of electrical equipment and power grid (protection to zero) interconnection.

2. Protective grounding is to closely connect the (highly conductive) part of voltage with (earth), which may be dangerous under fault conditions.

3. The human body is a conductor. When the human body touches two points with different potentials, (current) will form in the human body due to the effect of (potential difference). This phenomenon is electric shock.

4. The way of electric shock contacting charged body from human body and the way of current passing through human body can be divided into: (single-phase electric shock), (two-phase electric shock) and (step voltage electric shock).

5. The leakage protector can be used to protect (personal safety) and supervise (low voltage) the insulation state of the system or equipment. The line behind the installation point of leakage protector should be insulated (to ground), and the line should be well insulated.

6. Repeated grounding means that one or more places on the zero line are reconnected with the earth through (grounding device), and its safety function is to reduce the voltage of leakage equipment (to ground); Reduce the risk of electric shock when the zero line is broken; Shorten the duration of shell collision or ground short circuit; Improve the lightning protection performance of overhead lines.

7. For places prone to static electricity, keep the ground (wet) or lay the ground with good (conductive) performance; Workers should wear (anti-static) clothes and shoes, accumulate static electricity and guide people to the earth in time to prevent static electricity and sparks.

8. Static electricity has three characteristics: one is high (high voltage); The second is (electrostatic induction) protrusion; Third, the phenomenon of tip discharge is serious.

9. The basic elements of electricity safety are (electrical insulation), (safe distance), (current carrying capacity of equipment and its conductors) and (obvious and accurate signs). As long as these elements can meet the requirements of safety regulations, the safety of electricity consumption under normal circumstances can be guaranteed.

L0。 There are two kinds of harm caused by electric current to human body: (electric shock) and (electric injury).

Three. True or false questions (65438+ 0 points for each question, ***20 points)

L, in an environment full of combustible gas, you can use manual power tools. (10)

2, household appliances in the use process, you can use wet hands to operate the switch. (10)

3. In order to prevent electric shock, technical measures such as insulation, protection and isolation can be taken to ensure safety. ( √ )

4. For places prone to static electricity, keep the ground moist or lay a floor with good conductivity. ( √ )

5. Electricians can wear antistatic shoes to work. (10)

6. A sign "No Climbing, Electrical Danger" must be hung on buildings close to lines or transformers that may climb by mistake. ( √ )

7. When someone gets an electric shock at low voltage, pull it away immediately. (10)

8. In places with damp, high temperature or conductive dust, normal voltage should be used for power supply. (10)

9. When lightning strikes, if the operator is isolated in the exposed area and feels his hair stand on end, he should kneel down immediately, bend forward and hold his knees with his hands. ( √ )

10, clean the motor without turning off the power supply. (10)

1 1. Generally speaking, the human impedance of women is greater than that of men. (10)

12. Signs may not be hung around low-voltage equipment or withstand voltage test columns. (10)

L 3。 When the current is 100 mA, it is called fatal current. (10)

14. When moving some unfixed electrical equipment (such as electric fans and lighting lamps), it is not necessary to cut off the power supply. (10)

15, the average resistance of ordinary people is 5000-7000 ohms. (10)

16. When using hand-held electric tools such as hand drills and electric grinding wheels, leakage protectors should be installed to ensure safety. ( √ )

17, fuse should be installed on the protection line of lighting circuit. (10)

18. Chemical fiber protective articles (X) can be distributed to workers working in flammable, explosive, flammable and static places.

19. Electric tools should be regularly inspected and maintained by qualified electricians with certificates (√).

20. The human body died of electric shock because the liver was seriously damaged. (10)

4. Short answer questions (5 points for each question, *** 15 points)

1. Under what circumstances, the operating handle of switch and breaker must be hung with "No closing, someone is working! Signboard?

Answer: 1) Switches and knives that can send electricity to the workplace once closed. 2) Once the equipment has stopped, there is a danger of personal electric shock caused by switches and knife switches, and the equipment is damaged or the total leakage protector acts. 3) Once closed, the two power supply systems will be connected in parallel or power transmission will be reversed.

2. What are the basic measures to prevent AC and DC electric shock?

Answer: Electrified equipment should provide necessary protection, and it is required to ensure that accidental contact and accidental approach are prevented, making contact impossible; For occasionally charged equipment, measures such as protective grounding and protective grounding or installation of leakage circuit breakers should be taken; In addition, it is necessary to inspect, repair or test circuits or electrical equipment. However, when live maintenance is required, appropriate personal protective equipment should be used.

3. What safety issues should be paid attention to when using electric drills or hand-held power tools?

Answer: (1) All conductive parts must be well insulated. (2) All wires must be tough and durable soft rubber wires. When the wire enters the motor housing, it should be protected by rubber ring to prevent the wire insulation layer from being worn. (3) The incoming line of the motor shall be equipped with grounding or zero connection device. (4) Insulating shoes must be worn when using; Wear protective equipment such as insulating gloves. (5) Every time a tool is used, it must be strictly checked.

Verb (abbreviation of verb) essay questions (each question is marked with lo, *** 10).

What is the difference between protective grounding and protective grounding?

Answer: Protective grounding and protective grounding are two technical measures to maintain personal safety. Their differences are as follows:

First, the protection principle is different. The basic principle of low-voltage system protective grounding is to limit the voltage of leakage equipment to the ground so that it does not exceed a certain safety range; The protective grounding of high voltage system not only limits the voltage to the ground, but also promotes the action of protective devices in the system in some cases. The main function of protection zero connection is to make the equipment form a single-phase short circuit by connecting the zero line, and promote the rapid action of the protection device on the line.

Second, the scope of application is different. Protective grounding is suitable for general low-voltage ungrounded power grids and low-voltage grounded power grids with other safety measures; Protective grounding can also be used in high voltage ungrounded power grid. The ungrounded power grid does not need to adopt protective zero connection.

Third, the line structure is different. In addition to the phase line, the protective grounding system only has protective ground wire. In addition to the phase line, the zero protection system must have a zero line; When necessary, the protective zero line should be separated from the working zero line; Its important devices should also be grounded.

Agricultural electrician safety test questions and answers (2)

1. Fill in the blanks (30 questions, each question 1 minute)

1. Low-voltage electrical equipment refers to equipment with grounding voltage below (1000) V.

2. The second working ticket, for the same (voltage level) and (same type) work, you can use a working ticket on (several) lines.

3. Switching operation shall be carried out by (two persons), (one person for operation) and (one person for supervision), and the system of (duplicate ticket) shall be seriously implemented.

4. The operation ticket should be filled in item by item (pen) or ballpoint pen. The operation ticket issued by the computer shall be uniformly in handwritten format. The face of the operation ticket shall be clear and tidy, and shall not be altered at will.

5. Line patrol work should be carried out by personnel with power lines (work experience).

6, all kinds of homework personnel should accept the corresponding (safety) education and job skills training after passing the examination.

7. The so-called electrical equipment in use refers to (all live, some with voltage) or electrical equipment with voltage once it is operated.

8. The (indicating board) on any electrical equipment shall not be moved by any other personnel except the original operator or the personnel on duty.

9. When constructing near underground cables, pipelines and buried objects, tools such as picks, crowbars or iron wedges are not allowed to be used for excavation, and mechanical excavation is not allowed.

10. Fire fighting equipment should be inspected and tested regularly to ensure its availability at any time. Fire fighting tools are not allowed to be used for other purposes.

1 1. Work leaders and work permit holders are not allowed to issue work tickets.

12. The working ticket is filled in by the work (person in charge) and signed by the working ticket issuer.

14. The person in charge of the work shall be appointed by the written (approved) person in charge of the work area (company) (production) after passing the examination.

15. After the work (licensor) gives the order to start the work, the person in charge of the work is responsible for leading all the staff to complete the work task.

16. All low-voltage power outages should use (low-voltage priority) working tickets.

17. The person in charge of the work and the holder of the work permit shall be two persons (respectively).

18. Low-voltage indirect live working refers to the indirect contact of operators with live equipment, that is, holding insulating tools to work on live equipment.

19. Electrical operation must be carried out according to the order of the person in charge on duty, and the operation shall be carried out by (two people), and the low-voltage operation ticket shall be filled out by (the operator).

20. The main components of electrical equipment should be in the same color (marking).

2 1. When patrolling and checking the power distribution equipment, it is convenient to enter and leave the power distribution room (close the door) and must be locked after patrolling.

22. Before electrical operation, check the (name) and serial number of field equipment, as well as the opening and closing (position) of switch and knife switch. After the operation, a comprehensive inspection should be conducted.

23 "Rural Low-voltage Electrical Safety Work Regulations" is applicable to people engaged in low-voltage electrical work at or below the county level.

24. The distribution room should be equipped with necessary safety (electrical) and (fire-fighting) equipment.

25. Electrical personnel should be familiar with the electrical equipment within their jurisdiction.

26. Each operation ticket can only perform one operation task.

28. Emergency treatment refers to the treatment of accidents that may cause (personal electric shock), expand equipment accidents, cause system failures and (lead to electrical fires).

29. The work permit must be held by the electrical operator of this (power supply station) or (power user).

30. The working ticket issuer shall not (and) be the person in charge of the work and the licensor.

Second, multiple-choice questions (20 questions, each question 1 point)

1. The work of filling in the first working ticket of power cable shall be (a) allowed.

A. Dispatched B. Irregular C. Operator

2. During explosive pressure welding, the distance between the explosion point and the insulator should be greater than (a) meters.

A.0.6 B.0.8 C. 1.0

3. The braking operation should be carried out by (b) people.

A. 1 B.2 C.3

4. For towers without grounding downlead, temporary grounding body can be used. The depth of grounding body under the ground shall not be less than (c) meters.

A. 1

5. Patrol in remote mountainous areas and at night should be conducted by (b) people.

A. 1 B.2 C.3

6. Operators should take the exam of "Electrical Safety Work Regulations" (power line part) once a year.

A. 1 B.2 C.3

7. The distribution equipment maintenance, should use (b).

A. The second working ticket for power line B. The first working ticket for power line C. Low voltage working ticket

8. Power line workers who have interrupted their electrical work for more than (a) months for any reason should re-learn the electrical safety work regulations and can resume their work only after passing the examination.

A.3 B.6 C. 12

9. A person in charge of work can only issue one work ticket.

Three generations under one roof.

10. The executed working ticket shall be kept by the power supply station for (a) months.

A.3 B.6 C. 12

1 1. The setting of safety measures and the power-off operation of equipment shall be carried out by (b) personnel.

A. 1 B.2 C.3

12. When defects that threaten personal safety are found during patrol inspection, (c) or other temporary safety measures should be taken.

A. report to the leader B. all power outages C. all power outages, local power outages

13. The work guardian shall be the person in charge of the work. When the construction site is grouped into different locations with a working ticket, the guardians of each group can be designated by (c).

A. Work permit holder B. Work ticket issuer C. Work supervisor

14. Before the person in charge of the work receives the work permit order, (b).

A.you can work. You are forbidden to work. C.you can do some appropriate work.

15. If there is any doubt or abnormal fault during operation, it should be (b).

A. Continue the operation B. Stop the operation C. Ask the leader to handle it again.

16. The working ticket shall be filled in duplicate with pen or ballpoint pen.

A.2 B.3 C.4

17. At work, (a) the contents not filled in the work ticket were supplemented.

A. impermissible B. permissible C. may be appropriate

18. For large or complex work, (b) before filling in the work ticket, you should go to the site to investigate and formulate safety, technical and organizational measures according to the actual situation.

A. Work ticket issuer B. Work person in charge C. Work permit holder

19. Electrical workers who have been interrupted for more than (a) months must re-learn this procedure and can only resume their work after passing the examination.

A.3 B.6 C. 12

20.(b) During the work, you must always be at the work site, carefully supervise the work of the staff, and promptly correct the violations of safety.

A. Work ticket issuer B. Work guardian C. Work permit holder

III. True or false questions (20 questions, each question 1 minute)

1. Fill in the first working ticket that is valid in a few days. Dismantle the grounding wire installed in the workplace when the work is over, and recheck the grounding wire before returning to work the next day. ( √ )

2. The effective time of the first and second working tickets and live working tickets shall be limited to the approved maintenance period. ( √ )

3. The operation ticket should fill in the dual name of the equipment, namely the equipment name and number. ( √ )

4. The person in charge of the work shall be informed of the permission to start the work. Other methods are not allowed. ( × )

5. Working ticket must be filled in for emergency treatment of accidents. ( × )

6. When filling in the second working ticket for power lines, it is not necessary to perform the work permit procedures. ( √ )

7. When working on a live line tower, you should fill in the first working ticket. ( × )

8. A person in charge of work can only issue one work ticket. ( √ )

9. "Electric Power Safety Work Regulations" (power line part) is applicable to the staff of power generation, transmission, substation, distribution and user electrical equipment (including infrastructure installation and rural power personnel), and other units and relevant personnel refer to it. ( √ )

10. Anyone who finds any violation of safety regulations should immediately stop it and correct it before returning to work. ( √ )

1 1. The site investigation shall check the site conditions, environment and other dangerous points of the site construction (maintenance) operation line. ( × )

12. The work task list shall specify the work tasks, starting and ending pole numbers of the work area and supplementary safety measures. ( × )

13. Accident handling does not require a working ticket, but work permit procedures should be performed, safety measures should be taken, and a guardianship system should be implemented. ( × )

14. Dry powder fire extinguishers, carbon dioxide fire extinguishers or foam extinguisher should be used to extinguish electrical equipment, generators and motors that may be charged. ( × )

15. Welding on containers filled with flammable materials or on structures or other objects with wet paint is prohibited. ( √ )

16. Work permit holders can participate in this kind of work as team members or as work leaders when the team is short of staff. ( × )

17. The person in charge of the work should not be changed during the work. If the person in charge of the work needs to leave the site temporarily, a temporary person in charge of the work shall be appointed and the working ticket issuer and all members shall be informed. ( × )

18. During work, in case of lightning, rainstorm, strong wind or other situations that threaten the safety of staff, the person in charge of the work may order the temporary suspension of work. ( √ )

19. After the work ticket ends, the work permit holder can remove all safety measures and then resume power transmission. ( √ )

20. Can maintain the running motor. ( × )

(4) Question and answer (10 questions, 3 points for each question)

1. What are the rules for filling in the operation ticket?

Answer: The operation ticket should be filled in item by item with pen or ballpoint pen. The operation ticket issued by the computer shall be uniformly in handwritten format. The face of the operation ticket shall be clear and tidy, and shall not be altered at will. The operation ticket should fill in the dual name of the equipment, that is, the equipment name and number. The operator and guardian shall check the filled operation items according to the simulation diagram or wiring diagram and sign them respectively.

2, electrical workers should have what conditions?

Answer: (1) According to the doctor's appraisal, there is no disease that hinders work (physical examination at least once every two years).

(2) Have the necessary electrical knowledge and business skills, be familiar with the relevant parts of "Electric Power Safety Work Regulations" according to the nature of work, and pass the examination.

(3) Have the necessary knowledge of production safety and learn emergency rescue methods, especially electric shock first aid.

3. Among the personnel listed in the working ticket, what safety responsibilities should the person in charge bear?

Answer (1) the correct safety organization;

(2) Responsible for checking whether the safety measures listed in the working ticket are correct and complete, and whether the safety measures taken in the work permit are in line with the actual situation on site, and supplementing them when necessary;

(3) Before work, inform the members of the working class of the dangerous points, explain the safety measures and technical measures, and ensure that every member of the working class knows.

(4) Supervise and urge the members of the working class to abide by this regulation, use labor protection articles correctly and implement on-site safety measures.

(5) Whether the working class members are in good mental state.

(6) Whether it is appropriate to change the members of the working class.

4. Among the persons listed in the work ticket, what safety responsibilities should the work permit holder bear?

Answer (1) the necessity of review;

(2) Stop line, power transmission and work permit orders are correct;

(3) Whether the allowed safety measures such as grounding are correct and complete.

5. What are the specific requirements for the on-site investigation system in the Organizational Measures for Power Line Safety Work?

Answer (1) For the power line construction operation or construction (maintenance) operation that the working ticket issuer and the person in charge think it necessary to conduct on-site investigation, the construction and maintenance unit shall organize on-site investigation according to the work tasks and make records.

(2) On-site investigation shall check the power outage range required for on-site construction (maintenance) operation, the reserved live parts, the conditions, environment and other dangerous points of the job site, etc. According to the results of field investigation, organizational measures, technical measures and safety measures should be prepared for the operation projects with high risk, complexity and difficulty, and implemented after being approved by the competent production leader (chief engineer) of the unit.

6. What is the safety responsibility of the work permit holder?

Answer (1) Check whether the safety measures listed in the working ticket are correct and complete, and whether they conform to the actual situation on site;

(2) Correctly complete the safety measures listed in the working ticket;

(3) Before work, explain the safety measures taken to the person in charge of the work;

(4) Give the order to start work correctly.

7. What are the technical measures to ensure safety?

Answer: The following technical measures must be completed when working on the lines with total power failure and partial power failure:

(1) power failure; (2) check the power; (3) Installation of grounding wire; (4) Use personal safety line; (5) Hang signs and install fences (fences).