A doubly ionized lithium atom (Li2+,Z=3)\left(\mathrm{Li}^{2+}, \mathrm{Z}=3\right)(Li2+,Z=3) is in n=4n=4n=4 Bohr orbit. 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. As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. =EAn`u!d, |\~Y>ZF( dnLN\2vP6 >sSjgh2:Lmqx#a[G2{h$zW]_:@Lvr)2T:R-/ `&~O4j)>1P*M 5>F:1B.g!AR Select the correct answer and then click DONE. SECTION #4 | Participant Guide 2 Electrical Safety mELECTRICAL SAFETYm mACTIVITY 1 - GROUNDINGm In your small group, read fact sheets A and B, and the following scenario. (C) Hot sticks. d. 411, You are working with a 10-foot section of a conductive pipe near power lines. 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: 0000002122 00000 n 0000007464 00000 n c.40,000 volts 3.Needs to be reset Intentionally creating a low-resistance path that connects to the earth. If the power supply to the electrical equipment at your site is not grounded or the path has been broken, fault current may travel through a worker's body, causing electrical burns or death. gYpV:+ Stay at least 10 feet away from overhead power lines. Latoya is using a mixing motor to mix pool chemicals in a plastic drum. Electrical Safety Assessment Quiz Answers | ISHN A 120v. s\A0W+ d.Add more outlets. a.related to muscle damage. 2 0 obj Use non-conductive wood or fiberglass ladders when working near power lines. Electrical hazards like frayed cords, missing ground pins, improper wiring or the harm that these hazards pose. What is the output of the program in Exercise 17, if first = 26 and second = 8? c.Absorb any water around the area A) 120v . Fire -If current passes through the body near the heart or brain. |tYny@YE>LkNj4-czZf"Usw>j\sv3fn},>},KeA s If you are touching any grounded material while using a power tool Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. Be sure equipment that has been shop fabricated or altered is in compliance. Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [29 CFR 1926.404(f)(7)(v)]: Frames and tracks of electrically operated cranes. Electricity to the auger was supplied by a series of 50-foot extension cords running to an adjacent property. The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. 5.Twitch, Electrical shock may result in: a.311 [Power Tools]. Visually inspect all electrical equipment before use. Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires OSHA 29 CFR 1910, Subpart P . xYmo -ER/&@[D,_! Out of several possible scenarios, the most likely was contact between the exposed wires of an extension cord and a screw that protruded from the receptacle, which had its face plate removed. You discover the electrical cord on a drill has been damaged and some of the cord's insulation is missing. endobj 0000000016 00000 n On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. 0 Introduction To Osha Quiz Answers1) Which of the following activities The small electrical current enters his body through his left leg. 1.Is firmly connected 0000009628 00000 n When an electric shock occurs, your muscles may: 1. 0000108653 00000 n 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). Exercise their rights under the law without retaliation, including reporting an injury or raising health and safety concerns with their employer or OSHA. Use tools and equipment according to the instructions included in their listing, labeling or certification. 2. The plug of the compressor and an extension cord had been modified to fit a wall outlet for a common household clothes dryer (220 V). Lx*jWP# /c2)|]NXqAx>=~'[ D 600v. Explosion. A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. Select the choices that accurately define the common electrical term. Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. 0000015549 00000 n To verify an electrically safe work condition, all these conditions should be confirmed EXCEPT: Effective training of employees includes all of the following EXCEPT: How to operate power tools in wet conditions. 0000002733 00000 n 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. Select the correct answer and then click DONE. PDF Electrical Safety - Occupational Safety and Health Administration d.The body of the power tool. 3.Loose nuts The victim collapsed into the lake and sank 4-1/2 feet to the bottom. 10,000 milliamps (10 amps) Cardiac arrest and severe burns occur. Electrical hazards are life threatening incidents that could happen due to electricity. 0000001908 00000 n d.Metal, Over half of all deaths caused by electricity result from contact with ________. Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. 2. 0000422244 00000 n 0000003900 00000 n One worker, holding the deadman's switch, received a shock from a ground fault in the auger and was knocked back from the machine. Working with electricity can be dangerous. 4,600. Potential hazards of electricity are preventable if you do which of the following listed below? OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. OSHA will keep all identities confidential. Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard. d.A power tool, A GFCI is designed to: 4 0 obj c.15 feet d.Constructive objects, Select all answers that apply to the following statement and then click DONE. -Rubber. Hand-operated metal shifting ropes or cables of electric elevators. 0000001861 00000 n What is the primary purpose of properly grounding equipment? 4. 21 Examples Of Electrical Hazards - HSEWatch Underground electrical hazards are: A. Co-workers provided CPR, but were unable to revive the victim. a.Your thumb. -Glass. You need to evaluate the situation you are in and assess your . 0000004884 00000 n d. Not checking to make sure that the motor was properly grounded, If the circuit does not turn off when testing the GFCI, the GFCI: 1.Pain 0000056642 00000 n Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. -Conductor= permits the free flow of electricity. Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. 0000028595 00000 n Overview. 3. Some of the causes of these are live wire s that may be lying around, overloaded circuits, explosions that are caused by flammable objects, etc. 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. 1. View Answer Answer: 600v 4 . Before work began, the company safety director made sure that insulated line hoses were placed over sections of the the power line near the jobsite and that a safety clearance zone was marked off for arriving cement trucks. Only after a rescue squad arrived about 4 minutes later did anyone realize that the crane was in contact with a power line -- all those present had assumed that the victim had suffered a heart attack. 4.No, because he does not need to use an extension cord. OSHA requires the testing of a volt meter after a voltage test on voltage above_____. d.Adapter, What is a GFCI? C. near water. 0000006866 00000 n specifically addresses electrical protective devices. The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. <> 0000001604 00000 n Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . Before using the equipment, be sure that the ground wire: Test your knowledge with our electrical safety quiz below. <>>> While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. . 3.Body tissue b.10 feet 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. The source of the shocks -- the saw -- was not replaced. stream D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. These short objective type questions with answers are very important for competitive exams as well as Board exams. Quiz Question 9: Conductor insulation must be approved for the ___________ of use? What was Latoya's first mistake? When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of: <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 0000005734 00000 n Of the following choices, which are frequent electrical hazards Even when the power system is properly grounded, electrical equipment can instantly change from safe to hazardous because of extreme conditions and rough treatment. %PDF-1.5 One hand drill was not grounded, and the other had no safety plate. 1.Damaged cover or insulation 0000001731 00000 n OSHA: How Electricity Works Flashcards | Quizlet Electrical safety requirements necessary for the practical safeguarding of employees in the workplace. A laborer carried a piece of wire reinforcement (10 feet long by 8 inches wide) along the top section of the scaffold and contacted the power line with it. Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). Which of the following part of you body can burn if you come in contact with electricity? A measure of the energy of motion of the particles in a substance is its _____. The modification of the plug was not an intended use or prescribed by the manufacturer. [29 CFR 1926.416(a)(1)]. c.Wood The victim was totally deaf in one ear and suffered diminished hearing in the other. A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. Take any defective equipment out of service. OSHA 30 Construction Final Test Answer Key - Studylib -Damage to internal organs. Ground all exposed metal parts of equipment. 2.Using extension cords or electrical tools properly. Contact utilities for buried power line locations. 1. 0000011060 00000 n 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: [, Use all equipment according to the manufacturer's instructions. c.Gasoline (A) Shotgun sticks. a.A small current A. wrap tape around the damaged spot to prevent electrical shocks. Draw a line from the item on the left that corresponds to the match on the right. Electrical Hazards Electrical hazards can be found in nearly every roofing work site. Visually inspect all electrical equipment before use. endobj _.9u'2G_0 Ue]e"x5|Y Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. Handling Damaged Extension Cord When Energized: A 19-year-old construction laborer was working with his foreman and another laborer to construct a waterfront bulkhead for a lakeside residence. What type of burns are the result of current flowing through and exiting the body? BIOLOGICAL HAZARDS: term effects) and strain (longAssociated with working with animals, people, or infectious plant materials. 30 days B. Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. The accident site was wet; also, humidity was high and the victim was sweating. 2. 0000004444 00000 n Which of the following are insulators of electricity? What is the minimum clearance distance you must maintain from the power lines? Question 1: Which of these is a type of Ground Fault Circuit Adapter? d. No, because an extension cord would not provide enough power. 1.Fingernails OSHA 30 - Module 12: Electrical Safety Flashcards | Quizlet Select the correct answer and then click DONE. 0000001896 00000 n Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. Select the correct answer and then click DONE. Question 4: Which of the following is a type of burn caused by electrical hazards? a.Yes, as it is a mobile engine testing station. Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. The laborer, who was wearing leather gloves, received an electric shock and dropped the wire reinforcement, which fell across the power line and simultaneously contacted the metal rail of the scaffold, energizing the entire scaffold. 0000006893 00000 n 0000018681 00000 n 1.Clench 0000002876 00000 n Select the correct answer and then click DONE. 0000012944 00000 n 2.Something to transport the electrical current -- A conductor. 0000017336 00000 n 0000022637 00000 n 2.Using an aluminum ladder when the possibility exists for contact with electricity. Electrical Safety Multiple Choice Questions(MCQs) & Answers - gkseries Select the correct answer and then click DONE. Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. 1.Missing or broken path to ground. Looking for NFPA 70E Certification? Electricity will form a "path" or "loop". Computers Select the correct answer and then click DONE. PDF OSHA Safety - Electrical Safety - Red Vector 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. h|UnH}+i-. It is important to note that NFPA 70E is a . 4.Circuit breakers, When inspecting power tools, look for: Which group would be more accurate when used in an accelerating spaceship? Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. . using a 30-amp breaker in a system with 15- or 20-amp receptacles. What three things must be present for a current to flow through a conductor. b.Yes, as it would be too expensive to install more permanent wiring and receptacles. Electricity becomes hazardous when it takes an unintended path to complete the ________. Many workers are unaware of the potential electrical hazards present in their work environment, which makes them more vulnerable to the danger of electrocution. Extension cords may become a trip hazard when: OSHA 10 - Exit Routes, Emergency Action Plans, The Analysis and Design of Linear Circuits, Albert J. Rosa, Gregory J. Toussaint, Roland E. Thomas. Select the correct answer and then click DONE. 0000421627 00000 n 4.Must be replaced, Always use a GFCI: Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. 3. b.Rod 1476 0 obj <>stream 4.The amount of current, An electrical burn may affect: c. Inductive objects Select the correct answer and then click DONE. When current travels through your body - Definition of electric shock. 3 0 obj a. Gaseous matter (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) The factors that determine the severity of an electrical injury include: Electrical safety quiz answers are given below. Ground all power supply systems, electrical circuits, and electrical equipment. 0000003603 00000 n d. 20 feet. a.Extension cords OSHA: Electrical Hazards Flashcards | Quizlet Bob is asked to repair some overhead wiring, requiring the use a ladder. Which of the following are insulators of electricity? 1. A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. Short In Power Saw/Ungrounded Temporary Power Supply: On July 10, 1986, a 22-year-old carpenter was working at the construction site of large apartment complex, using a portable electric saw to construct the wooden framework of a laundry building. Which of the following are conductor of electricity? _5JKy. 1.When you are using electricity near water 0000007427 00000 n D. near other electrical equipment. b.30,000 volts An OSHA inspection revealed that the tool's original power cord had been replaced with a flat cord, which was not designated for hard service, and that strain relief was not provided at the point where the cord entered the tool. Two of the extension cords had no ground prongs, and some of them were repaired with electrical tape. c.Three-prong plug 0000110659 00000 n A) Identify; Castigate; C) Evaluate; D) Modify; 3. De-energize and ground lines when working near them. The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. Remove cords from receptacles by pulling on the plugs, not the cords. Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. OSHA 30 - Quiz 3 - Electrocution Hazards Flashcards | Quizlet 0000005716 00000 n Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. @*@;z}IAH@3MsgU1Dnf@agLahpCn@&b|-^;b0k*!3VYy,jy%( Z%|\Jg"dRp-Wbz3QJS%k9p_WtZ Wearing a baseball cap q>NmnLNmb$"Iyx1bD9.~Ll. Question 2: Which of the following are ways employers must protect their employees on the workplace? Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. 3. Electrical Safety Multiple Choice Questions and Answers for competitive exams. 1.Flammable liquids Best Practices with Power Lines 1. If electrical equipment is used in ways for which it is not designed, you can no longer depend on safety features built in by the manufacturer. Question 3: A/an ____________ is a unit of measurement for electrical resistance. OSHA Safety and Health Topics Page. c.falls. % PDF ODULE 1 INTRODUCTION TO E SAFETY - Occupational Safety and Health lex has set up a mobile engine testing station in the maintenance area. An examination revealed that the spring, cover plate, and part of the melamine casing were missing from the face of the female connector (the spring and some melamine fragments were found at the accident site). HWMo#7v#h>6,Z4- 0000089142 00000 n What are the 4 main type of hazards? [Ultimate Guide!] 0000003413 00000 n 3.Cramp 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: Death is probable. 0000001672 00000 n 3.No, because he will not be touching any grounded material when using the tool. What do tripped circuit breakers and blown fuses indicate? Electrocution. The victim signaled the operator of the crane to extend the boom and lower the hoist cable. 1.The humidity of the environment 0000002403 00000 n According to NFPA 70E, job briefings must be held for those employees that will be working on or near live parts operating at ______ or more. An employee was texturing a wall using an air compressor. 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. B. a) Ensure overhead power line safety 0000055319 00000 n Use only cords, connection devices, and fittings that are equipped with strain relief. Work performed on an electrical system within reaching distance of energized components is_____work. The ________ keeps the electricity on its intended path through the conductor. 0000010155 00000 n a.Standing in water 15,000 milliamps (15 amps) Lowest overcurrent at which a typical fuse or circuit breaker opens a circuit! When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. %PDF-1.4 % He yelled for his co-workers to disconnect the power, which they did. 0000004274 00000 n Select the correct answer and then click DONE. This caused him to fall from the ladder and land in a puddle of water, still holding the saw. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. lb MKS Electric current cannot exist without an unbroken path to and from the conductor. OSHA 10 - Electrical Flashcards | Quizlet BE SAFE! Study with Quizlet and memorize flashcards containing terms like Among all of the safety measures that can and should be used to prevent electrical shock, which one is the most essential?, According to NFPA 70E, job briefings must be held for those employees that will be working on or near live parts operating at ______ or more., When does electricity become hazardous to humans? 5 feet 0000005632 00000 n 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 She has an older drill with a steel housing and a 3-prong plug. 0000017163 00000 n 0000004686 00000 n Determine duration, frequency, degree of exposure to hazards and physical stress. d/E \VZvl$Y#nH,EIm /\"BQ>Rkl6xZWtAgfs 2.Loss of muscle control Does the fall qualify as an electrical accident? OSHA: Common Electrical Hazards Flashcards | Quizlet 3.Vapor Is not broken, Question Text: Electrical tools should be grounded with a(n)________. Other protective measures include guarding or insulating the lines. No Ground-Fault Circuit Interrupters (GFCIs): A journeyman HVAC worker was installing metal duct work using a double-insulated drill connected to a drop light cord. Regarding hand protection employers should: A. Cardiac arrest or death - A result of electrical shock. The ground wire was not attached on the male end of the cord's plug. View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. Safe operation of hand and portable powered tools and other hand-held equipment. When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. (E) a, b, and c. 2. 0000005520 00000 n Get All Answers to OSHA 30 Construction Final Exam. This is action is also known as creating or completing an electrical circuit. Quiz Question 7: Which is not an insulator? Freeze Select the correct answer and then click DONE. The most dangerous place to use electrical equipment is? NFPA 70E: Standard for Electrical Safety in the Workplace Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. Explosion HJ=S~68438IR/:VR C Y<7H*$F>ya)N1bTa+'OdzydV9QS]b{}(=q?pH,mt8{Ag ]wp?2N$AfnhBL!jV=6ho)5jA8H`Bkh{T[v\G%b|4| Eo*cF ]TBGjB[r6)WzCkQ;Bx(]*JG;&o0TV.P=s4Gs(&e~}j76,-6at$]r**-I!o66PqK.z "*D List the four main types of electrical injuries, Using the illustration, select the answer that matches the picture, Identify the illustration by selecting the appropriate answer. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> B. outdoors. Leaving or using electrical appliances near water - As electric current is transmitted faster in on wet surfaces, you stand a chance of getting an electric shock. Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. ZR)!=w|; @uT C0? 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. endobj 3.Something that causes current to flow through the . 2. Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. Is split 4.Cardiac arrest 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. Apparently, his hand contracted and he was "locked" to the saw. 3.Tears OSHA 30 Module 6: Personal Protective Equipme, OSHA 30 - Module 16: Recordkeeping & Reporting, OSHA 30 - Module 18: Safety and Health Progra, OSHA 30 - Module 11: Welding, Cutting and Bra, CRJ 200 Limitations (Official-ish) - MODDED (, SERE 100.2 Level A SERE (J3TA-US1329) (Civili, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer, E. Russell Johnston, Ferdinand Beer, Phillip Cornwell. 3.Loss of eyesight A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. 0000003771 00000 n 0000000816 00000 n c. No, because the electricity is needed on a long-term basis. Supply power for tools or equipment on a long-term basis. Osha 10 test answers 2021 quizlet - Math Questions 0000001116 00000 n OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. a.Shut off power within a fraction of a second xb```VVF A10p,``Pp`hhdpn``r`L:[ I,aZ4Knj21 `ny; Ge7t@OrMx)"cx&e:[~J%aUJ\*t Which of the following can be caused by exposure to an arc flash? -Voltage= a measure of electrical force. Question 1: Which of the following is a danger of electricity? The workers had removed their shirts and were sweating. Burns. Quiz Question 5: A/an ___________ is a unit of measurement for electrical resistance. 0000005406 00000 n Which of the following factors determine how severe an electrical injury might be? The NEC C. Suggestions 0000007694 00000 n 4.On equipment that must run unattended for long periods of time, Manufacturing equipment may be grounded using a wire connected to a rod driven into the earth. 3. d.50,000 volts. Which of the following are electrical hazards? - Brainly.com Additionally, the ground prong was missing and there was no GFCI protection. [Flexible Cords] Cords that are not 3-wire type, not designed for hard-usage, or that have been modified, increase your risk of contacting electrical current.
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