Electric current cannot exist without an unbroken path to and from the conductor. Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. The following hazards are the most frequent causes of electrical injuries Contact with power lines, Lack of ground-fault protection, Path to ground missing or discontinuous, Equipment not used in manner prescribed, and Improper use of extension and flexible cords. Other protective measures include guarding or insulating the lines. d.Alert workers of any water in the area, GFCI is an acronym for: c.Guaranteed Fault Circuit Interrupter OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. When does electricity become hazardous to humans? hbb``b``3N0 endstream endobj 183 0 obj <>/Metadata 28 0 R/Names 184 0 R/Outlines 23 0 R/Pages 27 0 R/StructTreeRoot 30 0 R/Type/Catalog/ViewerPreferences<>>> endobj 184 0 obj <> endobj 185 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text]/Properties<>>>/Rotate 0/StructParents 0/TrimBox[0.0 0.0 612.0 792.0]/Type/Page>> endobj 186 0 obj <> endobj 187 0 obj <> endobj 188 0 obj <>stream Water The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. a.Standing in water Due to the dynamic, rugged nature of construction work, normal use of electrical equipment at your site causes wear and tear that results in insulation breaks, short-circuits, and exposed wires. True. Using multi-receptacle boxes designed to be. If a worker has been retaliated against for using their rights, they Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. 5.Twitch, Electrical shock may result in: If a defective power tool gives you an electric shock, how might your muscles react? Explain the process that prevents the poles from steadily cooling off and the tropics from heating up over time. Quiz Question 3: Power cords can be damaged by which of the following? 3.Vapor A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. 0000055319 00000 n Which of the following are insulators of electricity? trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream % he most common shock-related injuries are: 0000414648 00000 n OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. 2.Something to transport the electrical current -- A conductor. a.Extension cords 0000001116 00000 n Select the correct answer and then click DONE. b.burns. b.The tool's power cord. 0000005734 00000 n 1452 25 0000024814 00000 n 3.Loose nuts Extension cords are used to: The ground wire was not attached on the male end of the cord's plug. Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. BE SAFE! Adapter For 3-Prong Cord Not Grounded To Outlet: On May 27, 1986, two workers were using a 110-volt auger to install tie-down rods for a manufactured home. Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. 1.Damaged cover or insulation When an electric shock occurs, your muscles may: 1.Using a fiberglass ladder when the possibility exists for contact with electricity. Electricity for power tools was supplied from an exterior 120-volt, grounded AC receptacle located at the back of the residence. Quiz: Electrical Hazards. How might this event affect the ability of animals to obtain energy to live? As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. -Wood. Look for overhead power lines and buried power line indicators. <>>> 0000001604 00000 n 0000006893 00000 n c.15 feet Arc Flash. Suppose you could convert the 525525525 Calories in the cheeseburger you ate for lunch into mechanical energy with 100%100 \%100% efficiency and you throw a 0.145kg0.145~\mathrm{kg}0.145kg baseball with the energy contained in the cheeseburger. The victim provided a path to ground and was electrocuted. c. Match the color of the tool to the color of the extension cord. gYpV:+ When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. Electricity to the auger was supplied by a series of 50-foot extension cords running to an adjacent property. c.Three-prong plug Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. Select the correct answer and then click DONE. The following hazards are the most frequent causes of electrical injuries Contact with Power Lines, Lack of Ground-fault Protection, Path to Ground Missing or Discontinuous, Equipment Not Used in Manner Prescribed, and Improper Use of Extension and Flexible Cords. a) Door or window edges 1. Freeze A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. 0000003254 00000 n 0000001495 00000 n 0000005050 00000 n Provides information about the hazards that electrical workers may experience as a part of their jobs. qnde>9!.,T2 :hw5 #OaPxkx=y7]J-yv*'H$jmVCq$ sx:R2$9SY+D!!LJ:n+.\#Hu~2VI O? The workers had removed their shirts and were sweating. c.The outlet. 0000009628 00000 n 2.Using an aluminum ladder when the possibility exists for contact with electricity. (E) a, b, and c. 2. 3. 1.Missing Question 1: Each year, approximately __________ workers suffer from electricity related injuries. 0000056642 00000 n Hand-operated metal shifting ropes or cables of electric elevators. 3.Tears Electricity will form a "path" or "loop". Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. Additionally, the ground prong was missing and there was no GFCI protection. [29 CFR 1926.416(a)(1)]. Safe operation of hand and portable powered tools and other hand-held equipment. Lockout/tagout procedures. Which one of these methods MOST effectively protects machines, tools, and operators against damage from electrical current? c.A measurement of electricity Latoya is using a mixing motor to mix pool chemicals in a plastic drum. 4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. Is not painted over 4 0 obj 0000089142 00000 n Contact utilities for buried power line locations. OSHA 10-Hour Safety Course - Electrical Safety Page 5 of 5 Use the three-stage safety model to stay safe: recognize, evaluate, and control hazards. Electrical hazards like frayed cords, missing ground pins, improper wiring or the harm that these hazards pose. 182 0 obj <> endobj xref 182 41 0000000016 00000 n One hand drill was not grounded, and the other had no safety plate. OSHA 29 CFR 1910, Subpart S . Frequently inspect electrical systems to insure that the path to ground is continuous. 1.When you are using electricity near water 0000108920 00000 n d.A power tool, A GFCI is designed to: 2.Loose screws Is split No GFCI's were used. d.The body of the power tool. The workers administered CPR to the victim, but to no avail. a. Gaseous matter <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. This caused him to fall from the ladder and land in a puddle of water, still holding the saw. 0000003603 00000 n Select the correct answer and then click DONE. endobj 1.Fingernails Besides personal bodily injury, what other electrical hazards can be found in the workplace? Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. 3 0 obj 3.The length of time the body is in contact with electricity The victim signaled the operator of the crane to extend the boom and lower the hoist cable. A measure of the energy of motion of the particles in a substance is its _____. a.Two-prong plug When you plug in a device (e.g., a power tool), the electricity takes the easiest path from the plug-in, to the tool, and back to the power source. a.Ground Fault Circuit Insulator These short objective type questions with answers are very important for competitive exams as well as Board exams. What factors determine the severity of Dirk's injuries? How fast would the ball be moving at the moment of release? What is the minimum clearance distance you must maintain from the power lines? %PDF-1.4 % Select the correct answer and then click DONE. c.falls. The floor is covered in water and she is barefoot. An 18-year-old worker at a construction site was electrocuted when he touched a light fixture while descending from a scaffold for his afternoon break. 0000028595 00000 n d.Metal, Over half of all deaths caused by electricity result from contact with ________. OSHA 29 CFR 1910, Subpart P . d.50,000 volts. ( 0000001861 00000 n There were no eyewitnesses to the accident, but evidence suggests that while the victim was handling the damaged and energized extension cord, he provided a "path to ground" and was electrocuted. 1476 0 obj <>stream Select the correct answer and then click DONE. 2.Flooding 0000422244 00000 n b.Electrical tools [Power Tools]. Quiz Question 9: Conductor insulation must be approved for the ___________ of use? Then answer the questions below. OSHA: Air Monitoring & Medical Surveillance, 5 ANO - RETOMANDO ARTIGO, SUBSTANTIVO E ADJE. d. 20 feet. Electrocution. -Rubber. xYmo -ER/&@[D,_! Using tools and equipment that can contact power lines increases the risk. A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. 2. Computers d. 411, You are working with a 10-foot section of a conductive pipe near power lines. There are many types of hazards - chemical, ergonomic, physical, and psychosocial, to name a few - which can cause harm or adverse effects in the workplace. H\n@0vj@/R#tnvihavopnS1>v8Z6zLpOCRU.O^6pImjgk{xv6%zp\,{|7_WqNfhu09$U?kW}: }y}]OIL5~W*8D~%W-yww;sORYbfspA.%YJV L%=Kx&0W+ 3.Draped over equipment. I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. Co-workers provided CPR, but were unable to revive the victim. Whether the hazard is posed by worn or damaged power tools or cords, improperly grounded tools or equipment, or the presence of standing water, it is the responsibility of the contractor to make sure the tools and equipment 0000002122 00000 n Visually inspect all electrical equipment before use. d.Adapter, What is a GFCI? lb MKS Use only cords, connection devices, and fittings that are equipped with strain relief. The accident site was wet; also, humidity was high and the victim was sweating. To be safe, you must think about your job and plan for hazards. [, Use all equipment according to the manufacturer's instructions. Question 2: Which of the following are ways . NFPA 70E defines those special circumstances and sets rigid electrical safety limits on voltage exposures, work zone boundary requirements and necessary personal protective equipment (PPE). Question 1: Employers must ensure that every electric utilization system and all utilization equipment installed, majorly modified, or replaced after March 15, 1972, complies with the standards for electricity set by the National Fire Protection Association, which have been adopted by OSHA. (b) The same reaction can also be classified as a redox reaction. <>>> Which of the following factors determine how severe an electrical injury might be? What is the output of the program in Exercise 17, if first = 26 and second = 8? The driver stopped the truck under the power line, and the victim, not realizing that the truck had moved, swung the boom to position the bucket behind the truck. . What three things must be present for a current to flow through a conductor. @*@;z}IAH@3MsgU1Dnf@agLahpCn@&b|-^;b0k*!3VYy,jy%( Z%|\Jg"dRp-Wbz3QJS%k9p_WtZ He yelled for his co-workers to disconnect the power, which they did. (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) True. What was Latoya's first mistake? As she is adding in the chemicals, her hand touches the motor and it becomes energized. Electrical Safety Multiple Choice Questions and Answers for competitive exams. endobj Electrical current travels through insulated ________. 1. b.30,000 volts Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. c) Age Supply power for tools or equipment on a long-term basis. The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. Is not broken, Question Text: Electrical tools should be grounded with a(n)________. 2. The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. 4. -Current= the movement of electrical charge. Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? Improper Use of Extension and Flexible Cords. 0000015549 00000 n The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. (See NFPA 70E-2021 Article 130 and OSHA subpart S part . Question 2: Which of the following are ways employers must protect their employees on the workplace? 0000010155 00000 n Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? 12 months C. 6 months D. Never Q23. -Voltage= a measure of electrical force. b. Deductive objects 2.Using extension cords or electrical tools properly. You should? 4.No, because he does not need to use an extension cord. 0000068035 00000 n 0000002557 00000 n Explosion b.Ground Fault Critical Interrupter 128 0 obj <> endobj xref 128 26 0000000016 00000 n 0000001896 00000 n d.Ground Fault Circuit Interrupter, : Another electrical hazard that can cause injury or death in the workplace is a ________ path to ground. c. No, because the electricity is needed on a long-term basis. 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: What is the most common, non-fatal, electrical shock-related injury? C. near water. <> 2.Grease 0000002150 00000 n Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. b.Match the thickness of the extension cord to the thickness of the nail gun's power cord. c) Establish and enact an assured equipment grounding conductor program (AEGCP) Ground all power supply systems, electrical circuits, and electrical equipment. The auger then fell across the other worker, the 24-year-old victim. 1.Is faulty 1.Flammable liquids 3.Loss of eyesight 0000420564 00000 n 0000108653 00000 n Electricity becomes hazardous when it takes an unintended path to complete the ________. 3.When you are using portable power tools OSHA 10 General Industry Test Answer Key WALKING. When used on the moon? Select the choices that accurately define the common electrical term. 4.The amount of current, An electrical burn may affect: Outlets Short Confined spaces Machinery-related hazards (lockout/tagout, boiler safety, forklifts, etc.)
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