Intro Welding Test 1
What is the recommended filter shade number that should be used in the welding helmet when performing gas metal arc welding with an arc current between 60-160 amps? a.#14 b.#10 c.#12 d.#11
#10
What is the recommended filter shade number to be used in the welding helmet when performing plasma arc cutting with an arc current under 300 amps? a.#14 b.#10 c.#12 d.#9
#10
What shade number should be used in the welding helmet when performing shielded metal arc welding with an arc current of 200 amps? a.#9 b.#12 c.#10 d.#14
#12
Filter lenses for goggles come in shades from #1 to #14. What number lens should be worn for oxyfuel gas welding? a.#6-#8 b.#2-#4 c.#4-#6 d.#10-#12
#4-#6
Low-pressure acetylene gauges usually have a red-line to indicate dangerous pressure levels above ____. a.20 psig (206.8 kPa) b.5 psig (34.4 kPa) c.15 psig (103.4 kPa) d.10 psig (68.9 kPa)
15 psig (103.4 kPa)
In what year was the first all-welded building constructed? a.1920 b.1990 c.1900 d.1890
1920
A full oxygen cylinder has a pressure of approximately ____. a.4000 psig (27.576 MPa) b.212 psig (1.462 MPa) c.2200 psig (15.168 MPa) d.250 psig (1.724 MPa)
2200 psig (15.168 MPa)
Combustible material should be kept at least ____ feet away from a welding area. a.15 b.5 c.35 d.25
35 ft
Which of the following factors would not help when trying to gain employment? a.Good personal hygiene and appearance. b.A poor scholastic record. c.An outgoing personality. d.A neatly completed job application.
A poor scholastic record.
During a fire, what happens in an oxygen cylinder safety valve to prevent an explosion? a.The safety valve opens fully to allow the oxygen to quickly escape. 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 trips an alarm that sounds to make locating the cylinder easier. d.A metal plug in the safety valve at the top of the cylinder melts and allows the oxygen to escape slowly.
A safety disc within the valve ruptures when a certain pressure is reached, slowly releasing the oxygen from the cylinder.
Which of the following are pieces of protective clothing and safety gear that welders should wear? a.Safety goggles or 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.Welding gloves and an air-purifying respirator. e.All of the above.
All of the above
Which of the following attitudes could contribute to an employee being overlooked for promotion? a. Constantly making excuses. b.Lack of respect and insubordination toward a supervisor. c.Inability to work as a team member. d.All of the above.
All of the above
Which of the following factors can lead to rejection for employment? a.A poor scholastic record. b.Inability to communicate verbally. c.Lack of maturity. d.All of the above.
All of the above
Which of the following safety precautions should be taken to avoid burns from arc rays? a.Wear clothing that protects skin while welding. b.Always use a helmet with the proper filter lens when welding. c.Provide nonflammable shielding to protect others. d.All of the above.
All of the above
Which of the following is not a safety precaution that must be taken to avoid serious injury from a compressed gas cylinder leaking or exploding? a.Smoking and the use of flames in the vicinity of the cylinder storage area must be prohibited. b.All oxygen cylinders and fuel gas cylinders must be stored together and secured so they cannot topple or roll. c.Place hazard warning signs to clearly mark the cylinder storage area. d.The welding shop must have a safe, well-ventilated area for cylinder inventory and storage.
All oxygen cylinders and fuel gas cylinders must be stored together and secured so they cannot topple or roll.
Arc rays are very dangerous to the eyes, but not to the skin. True False
Arc rays are very dangerous to the eyes, but not to the skin
Which of the following jobs requires more than high school or technical school education? a.Arc welder. b.Solderer. c.Tool-and-die welder. d.Gas welder.
Arc welder.
To quench a small gasoline fire on a job site, use a Class ____ fire extinguisher. a.A b.B c.C d.D
B
Which of the following occupations could possibly best be learned at a military training school? a.Blacksmith. b.Metallurgist. c.Combination welder. d.Diver/welder.
Combination welder
Fire extinguishers should be displayed on a bright red surface to increase visibility. True False
False
First, second, and third degree burns can all be immediately treated with cold water. True False
False
Helium gas is heavier than air. True False
False
If a gas cylinder is empty, it is not dangerous to touch the cylinder with an electrode. True False
False
It is a safety hazard for welders to wear trousers or coveralls with cuffs. True False
False
It is safe to use engine-driven equipment in confined spaces. True False
False
Riveting is commonly used to construct buildings, ships, and pipelines. True False
False
The pedestal grinder is not considered as dangerous a piece of machinery as a punch press or a gas metal arc welding gun. True False
False
Water does not effectively conduct electricity; therefore, welders need not take special precautions when welding in wet or damp conditions. True False
False
Welders can assume that the ventilation systems in welding shops are adequate to properly remove all toxic fumes, dust, and dirt from the air. True False
False
Forge welding has been used since approximately 1000 AD. True False
False Forge welding has been used since approximately 2000 AD.
Fusion welding is the process of joining materials by applying heat until the areas of the weld joint reach their melting points. True False
False Fusion welding is a generic term for welding processes that rely upon melting to join materials of similar compositions and melting points
In 1912, the Titanic became the first all-welded ship to be launched. True False
False In 1912, the Fullagar became the first all-welded ship to be launched.
Pressing the cutting lever on a cutting torch releases a stream of pure acetylene that burns through the preheated metal. True False
False Oxyen
Permanent safety hazards or obstacles in the shop should be painted with red and green stripes to create high visibility. True False
False Permanent safety hazards or obstacles in the shop should be painted with YELLOW and BLACK stripes to create high visibility.
Steel barrels were first produced commercially in the mid-1900s, using carbon arc welding. True False
False Steel barrels were first produced commercially in the mid-1894, using carbon arc welding.
Underwater arc welding was first developed in the United States in 1940. True False
False Underwater arc welding was first developed in Russia in 1940.
Thicker metal is used for riveted parts to compensate for strength lost due to rivet holes. True False
Falsh
Which of the following welding or cutting processes was developed most recently? a.Gas metal arc welding. b.Oxyfuel gas welding. c.Submerged arc welding. d.Friction stir welding.
Friction stir welding.
Which of the following materials is least dangerous to welders who may breathe the gaseous fumes produced when the material is welded? a.Beryllium. b.Iron. c. Lead. d.Cadmium.
Iron
What is the AWS abbreviation used for oxyacetylene cutting? a.OAC. b.OFC-P. c.OC-F. d.OFC-A.
OFC-A
What is the AWS abbreviation used for oxyacetylene welding? a.OFW. b.AAW. c.AOW. d.OAW.
OFW
Which of the following is not a safety precaution that should be followed when using electrical equipment? a.Use only double-insulated equipment. b.Always disconnect power to equipment before servicing. c.Be sure electrical equipment is properly grounded. d.Only use 110 volt electrical equipment.
Only use 110 volt electrical equipment.
Which of the following cutting processes can be done with air, inert gas, or oxygen? a.Plasma arc cutting. b.Laser beam cutting. c.Shielded metal arc cutting. d.Oxyfuel gas cutting.
Oxyfuel gas cutting
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.Tilt the cylinder, keeping one hand on the safety cap, and roll the cylinder along its bottom edge with your other hand. d.Any of the above.
Tilt the cylinder, keeping one hand on the safety cap, and roll the cylinder along its bottom edge with your other hand.
Which of the following is not a reason why aisles should be kept clear of hoses and electric cables? a.To prevent hot slag from falling on them. b.To protect hoses and cables from being damaged. c.To reduce the possibility of tripping accidents. d.To keep the work area clutter-free.
To prevent hot slag from falling on them.
What level of education is needed to work as a pipefitter or steamfitter? a.Technical school. b.College or university. c.Community college. d.Trade apprenticeship.
Trade apprenticeship.
A device that is added to a welding torch to permit oxyfuel gas cutting is called a cutting torch attachment. True False
True
A fire watch must know how to use a fire extinguisher, how to operate a job site fire alarm, and how to notify workers of job site fires. True False
True
A flashback occurs when the flame moves into or beyond the mixing chamber of the torch. It is possible for a flashback to move all the way to the hoses, regulator, and into the cylinder. True False
True
A siamese welding hose is a dual hose used to transport oxygen and fuel gas from the pressure regulators to the cylinders. True False
True
Acetylene becomes very unstable and may burn rapidly or explode at pressures above 15 psig (103.4 kPa). True False
True
Argon and carbon dioxide are heavier than air. True False
True
Engaging in horseplay in the shop is dangerous and considered a foolish breach of safety rules. True False
True
Fire-retardant clothing and hat should be worn when welding. True False
True
Housekeeping is an important factor in shop safety. True False
True
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. True False
True
In some shops, workers are required to wear a lifting belt or back brace to protect against lifting injuries. True False
True
In the forge welding process, parts are heated until they are molten. True False
True
Many gases are colorless and odorless and will displace the oxygen in a closed space, which can cause asphyxiation. True False
True
Oil, grease, kerosene, cloth, tar, wood, and coal dust must be kept away from all oxygen fittings to prevent fires or explosions. True False
True
Oxygen flowing through an acetylene hose could cause an explosion. True False
True
Periodic fire drills should be performed in the shop. True False
True
Prior to starting any hot work, a welder does not need to obtain permission from the shop supervisor if he or she has received proper training. True False
True
Prototype parts are usually handcrafted and serve as the first models of parts that may later be mass-produced. True False
True
Since welders often need to handle heavy pieces of steel, steel-toed shoes should be worn to protect the feet. True False
True
The name of the document that covers the safety precautions and procedures for working with containers that have held hazardous or flammable materials is: American Welding Society (AWS) Standard F4.1, Safe Practices for the Preparation of Containers and Piping for Welding and Cutting. True False
True
To avoid an explosion, welders must never attempt to weld or cut a container that has held a flammable or hazardous material. True False
True
Today, most automobile and truck chassis are built using rivets. True False
True
Trouser cuffs and pockets are not recommended on welding clothing, because they might get caught on welding shop equipment and cause an accident. True False
True
Ventilation pickups should be located so that fumes are captured above the welder's head. True False
True
Welders must be careful to never look directly at a welding arc without wearing proper eye protection; otherwise, arc flash may result. True False
True
Welding and cutting equipment should not be operated inside boilers, furnaces, large containers, or pipes to make repairs. True False
True
Welding helmets with filter lenses are designed to protect welders from most hazards, including arc rays, weld sparks, slag chips, and grinding fragments. True False
True
Welding is performed on both metallic and nonmetallic materials. True False
True
Welds can be made with the metal at room temperature using processes such as cold welding. True False
True
When welding or cutting, the area must be cleared of all combustible materials. True False
True
Electric resistance welding was developed in the late 1800s and used to weld the ends of wires together. True False
True 1883-1885 Electric resistance welding was developed by Elihu Thomas
What precautions should be taken to ensure the air that welders breathe is clean and safe? a.Use a ventilation or exhaust system. b.Wear the proper respiratory protection. c.Take frequent breaks to get fresh air. d.Both A and B.
Use a ventilation or exhaust system & Wear the proper respiratory protection.
When opening or closing torch valves, how much force should be applied? a.Use only finger force. b.Use a strong hand grip and tighten firmly. c.Use a wrench, but be careful to not over tighten. d.None of the above.
Use only finger force
Which of the following is not a reason why welding is a more efficient process than riveting and machining? a.Less machining time is required to produce a weldment. b.Less material is usually needed to produce a weldment. c.Welding produces parts that are always stronger than riveted or machined parts. d.Both A and B.
Welding produces parts that are always stronger than riveted or machined parts
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. acetone b.calcium carbide c.carbon dioxide d.calcium
acetone
When the hole, or orifice, in the end of the torch tip becomes dirty, it may be cleaned using a proper size drill bit or a(n) ____. a.chemical cleaner b.wire cleaner c.reamer d.broaching wire
broaching wire
A(n) ____ is a tool used to make the end of a worn cutting tip flat again. a.facing file b.broaching wire c.tip reformer d.cutting tip refacer
facing file
Oxygen and fuel gas are combined in the ____ chamber, then flow to the tip of the torch where they are burned. a.blending b.mixing c.reducing d.preheating
mixing
A(n) ____ is used to reduce and control the pressure of the welding gases. a.flowmeter b.regulator c.manifold d.bypass valve
regulator
A(n) ____ is a one-way valve that prevents the reverse flow of gases through the torch, hoses, and regulators. a.flashback arrestor b.reverse-flow valve c.check valve d.pressure valve
reverse-flow valve
A single-stage or two-stage fuel gas ____ is used on a cutting outfit. a.cutting torch b.torch attachment c.siamese hose d.regulator
siamese hose