WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VER, Exams of Nursing

Download WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VER and more Exams Nursing in PDF only on Docsity! WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ Liquid oxygen is stored in a(n) ___________ . A) Dewar flask B) none of these, it can't be safely stored. C) large tankers D) compressed gas cylinder - CORRECT ANSWERS A) Dewar flask A(n) ________ is used to connect several cylinders to one delivery pipe. A) manifold B) flow meter C) gas cylinder D) regulator - CORRECT ANSWERS A) manifold Acetylene becomes unstable and explosive at or above _______ psig. if it is allowed to collect in large volume as a gas. A) 10 B) 15 C) 25 D) 20 - CORRECT ANSWERS B) 15 The recommended filter lens for oxy/fuel welding or cutting are #_______ to #_________. A) 8,9 WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ B) 12,14 C) 10,12 D) 3,5 - CORRECT ANSWERS D) 3,5 In the event of a fire, a safety disc will rupture in an oxygen cylinder valve to allow the pressurized gases to be released. A) True B) False - CORRECT ANSWERS A) True For extra protection, safety glasses should be worn under a welding helmet, face shield, or welding goggles. A) True B) False - CORRECT ANSWERS A) True A(n) ______ is used to reduce and control the pressure of the welding gases. A) cylinder B) regulator C) manifold D) flow meter - CORRECT ANSWERS B) regulator When the regulating adjusting screw is loose, the regulator is _______. WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ D. Push angle and drag angle - CORRECT ANSWERS B. Work angle and travel angle A lead with a larger diameter will have less voltage drop than a lead with a smaller diameter A) True B) False - CORRECT ANSWERS A) True A weld bead that is 5-6 times the electrode diameter is made using which of the following? A. A longer arc length B. A weaving motion C. A whip action to cool the weld pool D. An electrode at least 5/16″ (4.6 mm) in diameter - CORRECT ANSWERS B. A weaving motion Polarity or current changes are made when the welding machine is under load. A) True B) False - CORRECT ANSWERS B) False Current used for SMAW is constant. WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ A) True B) False - CORRECT ANSWERS A) True Current that travels in both directions is known as ____. A. DCEN B. DCEP C. AC D. Both A and B - CORRECT ANSWERS C. AC A pickup tube on a fume exhaust system should pull fumes away from the welder's face. A) True B) False - CORRECT ANSWERS A) True DCEP is the same as the old electron flow designation of direct current straight polarity. A) True B) False - CORRECT ANSWERS B) False 1) Workpiece lead - E 2) Workpiece - D 3) Electrode holder - B WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ 4) Electrode lead - A 5) Power supply - F 6) Electrode - C - CORRECT ANSWERS Identify parts of the SMAW station shown. 1) Workpiece lead 2) Workpiece 3) Electrode holder 4) Electrode lead 5) Power supply 6) Electrode Cuts and worn insulation on electrode and workpiece leads are not acceptable. A) True B) False - CORRECT ANSWERS A) True Current that travels from the base metal to the electrode is known as ____. A. DCEN B. DCEP C. AC D. Both A and B. - CORRECT ANSWERS B. DCEP WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ A. six B. three C. five D. four - CORRECT ANSWERS B. three The distance between the end of the electrode and the surface of the base metal is called ____. A. the arc distance B. the arc length C. the electrode distance D. the electrode length - CORRECT ANSWERS B. the arc length As the weld cools, a hard crust called ____ forms over the weld bead. A. sludge B. slurry C. flux D. slag - CORRECT ANSWERS D. slag Curtains are used to protect welding equipment and machinery from sparks and bright light from the arc. A) True B) false - CORRECT ANSWERS B) false WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ Coarse adjustments using the range switch must not be made while welding. A) True B) False - CORRECT ANSWERS A) True An electrode with thick coverings can be used for a technique called ____. A. weaving B. fillet welding C. stringer welding D. drag welding - CORRECT ANSWERS D. drag welding To counteract backward arc blow, place the workpiece lead near the start of the weld joint. A) True B) False - CORRECT ANSWERS A) True What are the characteristics of an oxidizing flame? A. The end of the inner flame is ragged or rough. B. The end of the inner cone is smooth and shaped like a bullet. WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ C. The end of the inner cone is smooth and pointed; the flame is loud and makes a hissing noise. D. Both A and B - CORRECT ANSWERS C. The end of the inner cone is smooth and pointed; the flame is loud and makes a hissing noise. What type of tool should be used to tighten or loosen the fittings on the regulator, torch, or hoses? A) slip-joint pliers B) box-end wrench C) open-end wrench D) pipe wrench - CORRECT ANSWERS C) open-end wrench The _____ must be closed before the cylinder valves are opened. A. regulators B. flashback arrestors C. oxygen cutting lever D. gauges - CORRECT ANSWERS A. regulators If a leak is suspected in a hose, nonpetroleum-based soapsuds can be used to help locate the leak. A) True B) False - CORRECT ANSWERS A) True WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ A(n) ____ flame has a smooth, bullet-shaped inner cone. A. carburizing B. neutral C. oxidizing D. cutting - CORRECT ANSWERS B. neutral When lighting a welding or cutting torch, a flint-and-steel spark lighter must be used to prevent burns. A) True B) False - CORRECT ANSWERS A) True Oxygen cylinder valves should always be opened slowly because the pressure inside an oxygen cylinder may be 2200 psig (15,200 kPa) and can rupture the regulator diaphragm or gauges. A) true B) false - CORRECT ANSWERS A) true The oxygen cutting lever should not be depressed when setting the correct oxygen working pressure on the regulator. A) true B) false - CORRECT ANSWERS B) false WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ A carburizing flame is produced when too little oxygen is present and three flame areas are visible. A) True B) False - CORRECT ANSWERS A) True The regulator is closed when the adjusting screw is turned ____ and feels ____. A) counterclockwise, loose B) clockwise, tight C) counterclockwise, tight D) clockwise, loose - CORRECT ANSWERS A) counterclockwise, loose What Color is steel at its Ignition temperature? A. Blue B. Yellow C. Purple D. Bright red (Orange-red) - CORRECT ANSWERS D. Bright red (Orange- red) What is the minimum number of preheating orifices that should line up with the cutting line? WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ A. 2 B. 3 C. 4 D. Number if holes does not matter - CORRECT ANSWERS A. 2 Name fuel gases that may be used in oxyfuel gas cutting. A. Natural gas B. Hydrogen C. Acetylene D. All the above - CORRECT ANSWERS D. All the above When cutting metal under 1/8" (3.0mm) thick, the torch should be lowered to _____ degree to _____ degree from horizontal. A. 10 , 20 B. 15 , 20 C. 20 , 25 D. 25 , 30 - CORRECT ANSWERS B. 15 , 20 As the thickness of the metal increases, the cutting tip should be angled further from perpendicular to the surface. A) true B) false - CORRECT ANSWERS B) false WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ 1 3/4" - CORRECT ANSWERS Use the ruler below to identify each of the measurements. G: _________ 2 3/8" - CORRECT ANSWERS Use the ruler below to identify each of the measurements. H: _________ 2 7/8" - CORRECT ANSWERS Use the ruler below to identify each of the measurements. I: _________ 3 7/16" - CORRECT ANSWERS Use the ruler below to identify each of the measurements. J: _________ 3 15/16" - CORRECT ANSWERS Use the ruler below to identify each of the measurements. K: _________ 4 9/16" - CORRECT ANSWERS Use the ruler below to identify each of the measurements. WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ L: _________ 5 1/16" - CORRECT ANSWERS Use the ruler below to identify each of the measurements. M: _________ 5 11/16" - CORRECT ANSWERS Use the ruler below to identify each of the measurements. N: _________ 5 7/8" - CORRECT ANSWERS Use the ruler below to identify each of the measurements. O: _________ A condition usually caused by allowing the end of the torch tip to touch the base metal or a clogged tip orifice A) Flashback B) Reverse Flow C) Tip fire D) Backfire - CORRECT ANSWERS D) Backfire For SMAW, some machines offer a "dig" setting, which is _________. WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ A) Hot start B) Arc force C) Excessive amperage - CORRECT ANSWERS B) Arc force Check all that apply: During SMAW, the welder controls each of the following: A) Travel speed B) Electrode travel angle C) Electrode work angle D) Open circuit voltage E) Arc length - CORRECT ANSWERS A) Travel speed B) Electrode travel angle C) Electrode work angle E) Arc length The type of light radiation associated with Oxy/fuel cutting or welding is: A) UV B) Ultraviolet C) Infrared D) X-ray - CORRECT ANSWERS C) Infrared WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ C. 2G D. 1G - CORRECT ANSWERS B. 3G 1) Butt joint-Horizontal - F 2) T-joint-Overhead - R 3) Corner joint-Flat position - B 4) Edge joint-Vertical position - O 5) T-joint-Flat position - C 6) Butt joint-Overhead position - P 7) Lap joint-Horizontal position - I 8) Corner joint-Vertical position - L 9) Lap joint-Flat position - D - CORRECT ANSWERS Match the name of the weld joint and the welding position with the correct corresponding illustration. 1) Butt joint-Horizontal 2) T-joint-Overhead 3) Corner joint-Flat position 4) Edge joint-Vertical position 5) T-joint-Flat position 6) Butt joint-Overhead position 7) Lap joint-Horizontal position WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ 8) Corner joint-Vertical position 9) Lap joint-Flat position A tack weld is a small weld used to hold the base metal pieces in alignment. A) True B) False - CORRECT ANSWERS A) True 1) Weld root - E 2) Groove face - G 3) Electrode - A 4) Bevel angle - C 5) Root reinforcement - L 6) Root opening - F 7) Root face - D 8) Groove angle - B 9) Face reinforcement - H 10) Weld toe - I 11) Weld face - J 12) Joint penetration or weld size - K - CORRECT ANSWERS Match the name of each of the parts of a single-V-grooved butt joint with the location of that part on the corresponding illustration. WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ 1) Weld root 2) Groove face 3) Electrode 4) Bevel angle 5) Root reinforcement 6) Root opening 7) Root face 8) Groove angle 9) Face reinforcement 10) Weld toe 11) Weld face 12) Joint penetration or weld size Which number and letter combination does the American Welding Society assign to a groove weld in the flat welding position? A. 4G B. 1G C. 2G D. 3G - CORRECT ANSWERS B. 1G WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ A. Stringer B. weave C. root D. cap - CORRECT ANSWERS B. weave The metal to be welded is called the ____. A. base metal B. filler metal C. weld metal D. face metal - CORRECT ANSWERS A. base metal Which number and letter combination does the American Welding Society assign to a groove weld in the overhead welding position? A. 1G B. 4G C. 2G D. 3G - CORRECT ANSWERS B. 4G In a multiple-pass weld, the first pass is called the cover pass and the last pass is called the filler pass. A) true B) false - CORRECT ANSWERS B) false WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ List five factors that may keep a person from being hired for a job. - CORRECT ANSWERS any five of the following answers: A poorly completed job application, a poor scholastic record, poor personality, lack of goals, lack of enthusiasm, difficulty expressing yourself, demanding starting pay that is too high, poor personal appearance, lack of maturity, excessive interest in security and benefits, failing a drug test. List six factors that may result in termination or lack of promotion on a job - CORRECT ANSWERS any six of the following: Poor attendance without cause, habitually arriving late, alcoholism, illegal drug use, inability to perform the task assigned, inability to work as a team member, fighting and threatening peers, refusing to follow directions from a supervisor, talking with others too much and too often, lack of respect for others, lack of respect for others' property, always making excuses, constant complaining When filling out a job application, why should you write "N/A" or "Not Applicable" in answer blanks that do not apply to you? - CORRECT ANSWERS If you do not write "N/A", a potential employer might think that you had overlooked the question and are not a careful worker. The most basic requirement for a job in welding is the ability to do work ______ and accurately. - CORRECT ANSWERS safely WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ In most cases, a pipefitter's education includes a trade _______. - CORRECT ANSWERS apprenticeship If you decided you wanted to become a welding inspector, what level of education would you expect to be required? A. High School B. Technical school or community college C. Trade Apprenticeship D. College or university - CORRECT ANSWERS B. Technical school or community college List two reasons why receiving training on new welding methods or new welding equipment is beneficial. - CORRECT ANSWERS any two of the following: Keeps skills up to date, makes the trainee a better welder, allows the trainee to make better welds, makes the trainee more employable, maybe gets the trainee a promotion Briefly describe the advantage and disadvantage of becoming an entrepreneur - CORRECT ANSWERS advantages include being your own boss, having control over decisions, having control over work schedule, satisfaction of working with subjects you understand or enjoy, a sense of accomplishment, opportunity for profit. WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ As a metal is cooled, it will always try to expand. A) true B) false - CORRECT ANSWERS B) false Current flow, or the number of electrons flowing in a closed electric circuit, is measured in amperes. A) True B) False - CORRECT ANSWERS A) True Open-circuit voltage is measured while the circuit is closed and current is flowing. A) True B) False - CORRECT ANSWERS B) False The definition of hardness is the ability to ____. A. resist high heat B. resist penetration or scratching C. resist compression pressures D. stretch - CORRECT ANSWERS B. resist penetration or scratching WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ The arc gap between the electrode and the base metal offers no resistance to the flow of electrons while welding. A) true B) false - CORRECT ANSWERS B) false A material is said to be tough if it can resist scratching and indenting A) true B) false - CORRECT ANSWERS B) false The definition for ductility is the ability to ____. A. withstand high heat B. not break C. resist penetration D. stretch or bend without breaking - CORRECT ANSWERS D. stretch or bend without breaking A weld can be achieved through heat, pressure, or a combination of heat and pressure. A) True B) False - CORRECT ANSWERS A) True A weld cannot be made with pressure alone. WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ A) true B) false - CORRECT ANSWERS B) false A correctly made weld has better physical properties than the base metals. A) True B) False - CORRECT ANSWERS A) True A material with very low ductility is brittle. A) true B) false - CORRECT ANSWERS A) true What causes a bell-mouthed kerf? A. Too much acetylene pressure. B. Moving too slowly. C. Too much oxygen pressure. D. Moving too fast. - CORRECT ANSWERS C. Too much oxygen pressure. It is a safety hazard for welders to wear trousers or coveralls with cuffs. A) True B) False - CORRECT ANSWERS A) True WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ When oxygen and fuel gas cylinders are in storage, what safety feature should be securely in place on top of the cylinder? A. Fusible plugs. B. Safety cap. C. Reinforced threaded valves. D. All of the above. - CORRECT ANSWERS B. Safety cap. A(n) ____ is used to connect several cylinders to one supply pipe, which then distributes gas to several workstations. A. manifold B. check valve C. distributor valve D. cylinder regulator - CORRECT ANSWERS A. manifold Which are the two most commonly used fuel gases in industry? A. Acetylene and MPS. B. Propane and natural gas. C. Hydrogen and propane. D. MPS and hydrogen. - CORRECT ANSWERS A. Acetylene and MPS. A ____ is used to reduce and control the pressure of the welding gases. A. manifold WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ B. bypass valve C. regulator D. flowmeter - CORRECT ANSWERS C. regulator The slot that is produced during cutting is called the ____. A. bead B. tracer C. arc D. kerf - CORRECT ANSWERS D. kerf The threaded fittings of an oxyfuel gas welding outfit are made of hardened steel and must be firmly tightened to avoid any leaks. A) true B) false - CORRECT ANSWERS B) false What shade number should be used in the welding helmet when performing OFC? A. #12 B. #14 C. #4-6 D. #10 - CORRECT ANSWERS C. #4-6 WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ When lighting a welding or cutting torch, a flint-and-steel spark lighter must be used to prevent burns. A) True B) False - CORRECT ANSWERS A) True Acetylene becomes very unstable and may burn rapidly or explode at pressures above 15 psig (103.4 kPa). A) true B) false - CORRECT ANSWERS A) true A ____ valve keeps oxygen from leaking around the valve stem. A. positive pressure B. backflow C. pressure-releasing D. backseating - CORRECT ANSWERS D. backseating As the thickness of the metal ____, the cutting tip should be held closer to ____. A. decreases, perpendicular B. increases, horizontal C. increases, vertical D. decreases, vertical - CORRECT ANSWERS C. increases, vertical WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ A) true B) false - CORRECT ANSWERS A) true Low-pressure acetylene gauges usually have a red-line to indicate dangerous pressure levels above ____. A. 10 psig (68.9 kPa) B. 5 psig (34.4 kPa) C. 15 psig (103.4 kPa) D. 20 psig (206.8 kPa) - CORRECT ANSWERS C. 15 psig (103.4 kPa) Housekeeping is an important factor in shop safety. A) true B) false - CORRECT ANSWERS A) true If a positive-pressure torch is equipped with a cutting torch attachment, what additional step must be taken when shutting it down? A. The oxygen valve on the cutting attachment must be open. B. The oxygen valve on the cutting attachment must be closed. C. The acetylene valve on the cutting attachment must be open. D. The acetylene valve on the cutting attachment must be closed. - CORRECT ANSWERS B. The oxygen valve on the cutting attachment must be closed. WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ Cutting torch tips are generally made of ____ and are sometimes chrome-plated to reflect heat. A. copper B. titanium C. aluminum D. steel - CORRECT ANSWERS A. copper Which of the following is an acceptable method of moving an oxygen cylinder? A. Lift the cylinder by the safety cap and cradle it in your arms as you carry it to its new location. B. Lay the cylinder flat on the ground and roll it with your foot. C. Secure the cylinder in a hand truck D. Any of the above. - CORRECT ANSWERS C. Secure the cylinder in a hand truck By filling the cylinders with a porous material and storing the acetylene gas in a liquid called ____, acetylene can be safely stored at pressures above the danger point. A. carbon dioxide B. acetone C. calcium carbide WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ D. calcium - CORRECT ANSWERS B. acetone In a flashback arrestor, a stainless steel filter prevents the flame from entering the hose. Flashback arrestors are installed between the torch and the hose. A) true B) false - CORRECT ANSWERS A) true Why are spark lighters or economizers used instead of matches to light the gases at the torch? A. They prevent the welder from burning his/her fingers. B. They are cheaper to operate. C. They are cleaner. D. They are faster. - CORRECT ANSWERS A. They prevent the welder from burning his/her fingers. Oxyfuel gas cutting is also known as ____ in the trade. A. burning B. magnetic cutting C. electric motor cutting D. manual cutting - CORRECT ANSWERS A. burning WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ A) True B) False - CORRECT ANSWERS A) True The regulator is closed when the adjusting screw is turned ____ and feels ____. A. counterclockwise, loose B. counterclockwise, tight C. clockwise, loose D. clockwise, tight - CORRECT ANSWERS A. counterclockwise, loose The ____ must be closed before the cylinder valves are opened. A. gauges B. flashback arrestors C. regulators D. oxygen cutting lever - CORRECT ANSWERS C. regulators Which type of cylinder uses a fusible plug? A. Oxygen. B. Acetylene. C. Both A and B. D. None of the above. - CORRECT ANSWERS B. Acetylene. WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ An unthreaded cutting torch tip is usually connected to the cutting torch head by ____. A. accurately machined mating surfaces B. a silver-soldered joint C. a threaded tip nut D. a slip joint using an O-ring seal - CORRECT ANSWERS C. a threaded tip nut During a fire, what happens in an oxygen cylinder safety valve to prevent an explosion? A. The safety valve trips an alarm that sounds to make locating the cylinder easier. B. A safety disc within the valve ruptures when a certain pressure is reached, slowly releasing the oxygen from the cylinder. C. The safety valve opens fully to allow the oxygen to quickly escape. D. A metal plug in the safety valve at the top of the cylinder melts and allows the oxygen to escape slowly. - CORRECT ANSWERS B. A safety disc within the valve ruptures when a certain pressure is reached, slowly releasing the oxygen from the cylinder. Pressing the cutting lever on a cutting torch releases a stream of pure acetylene that burns through the preheated metal. WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ A) true B) false - CORRECT ANSWERS B) false Oxyfuel gas cutting (OFC) is a process used to cut metal by rapidly oxidizing or burning it. A) True B) False - CORRECT ANSWERS A) True What type of tool should be used to tighten or loosen the fittings on the regulator, torch, or hoses? A. Slip-joint pliers. B. Pipe wrench. C. Open-end wrench. D. Box-end wrench. - CORRECT ANSWERS C. Open-end wrench. A motor-driven carriage is adjustable for flame height, cutting speed, and torch angle. A) True B) False - CORRECT ANSWERS A) True Arc rays are very dangerous to the eyes, but not to the skin. A) true WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ A. Safety goggles or safety glasses with side shields. B. Welding helmet with correct filter lens. C. Earmuffs, steel-toed shoes, trousers without cuffs, and a welder's cap. D. All of the above. - CORRECT ANSWERS D. All of the above. A(n) ____ flame has a smooth, bullet-shaped inner cone. A. cutting B. carburizing C. neutral D. oxidizing - CORRECT ANSWERS C. neutral Oxygen cylinder valves should always be opened slowly because the pressure inside an oxygen cylinder may be 2200 psig (15,200 kPa) and can rupture the regulator diaphragm or gauges. A) true B) false - CORRECT ANSWERS A) true How far should the oxygen cylinder valve be opened for welding and cutting? A. 1/8-1/4 turn. B. 1/2-5/8 turn. WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ C. 1/4-1/2 turn. D. All the way. - CORRECT ANSWERS D. All the way. How is an acetylene hose nut different from an oxygen hose nut? A. Acetylene hose nuts and oxygen hose nuts are the same. B. Oxygen hose nuts are used for GTAW and acetylene hose nuts are used for SMAW. C. Acetylene hose nuts have left-hand threads and oxygen hose nuts have right-hand threads; a groove is machined around the acetylene hose nut. D. Oxygen hose nuts have left-hand threads and acetylene hose nuts have right-hand threads; a groove is machined around the oxygen hose nut. - CORRECT ANSWERS C. Acetylene hose nuts have left-hand threads and oxygen hose nuts have right-hand threads; a groove is machined around the acetylene hose nut. A piece of ____ clamped to the work may be used to achieve straighter kerf line when cutting manually. A. PVC B. angle iron C. aluminum tubing D. hardened brass - CORRECT ANSWERS B. angle iron WELDING FINAL EXAM - ALL SETS COMBINED OF 215QUESTIONS WITH ALL ANSWERS 100% CORRECTLY VERIFIED LATEST UPDATE 2023/2024 RATED A+ Both the acetylene and the oxygen regulator adjusting screws must be turned counterclockwise until they feel loose before the cylinder valves are opened. A) true B) false - CORRECT ANSWERS A) true When an oxyacetylene cutting torch is being lit, the oxygen torch valve is turned on first, the flame is lit, and then the acetylene torch valve is opened and adjusted. A) true B) false - CORRECT ANSWERS B) false What is the ignition temperature of mild steel? A. 816°F (435.6°C) B. 2470°F (1343°C) C. 1500°F (815.6°C) D. 2732°F (1500°C) - CORRECT ANSWERS C. 1500°F (815.6°C) A full oxygen cylinder has a pressure of approximately ____. A. 4000 psig (28,000 kPa) B. 2200 psig (15,200 kPa) C. 212 psig (1500 kPa)