Boilermakers Questions And Answers With 100% Correct Answers

Second degree burn - A burn that causes the skin to blister is referred to as a: Flow meter - The amount of inert gas is controlled by the 7 3/4 - Subtract: 7 2/3 - 9 11/12 151' - A boilermaker mechanic needs 12 lengths of 1/4" membrane. Each length is to 12'7". What is the total length of membrane needed? 31' 2" - A welder needs tube sections (Dutchmen) in the following lengths: 8'10", 12' 5", and 9' 11". What is the total amount of tubing needed? 19" - Add: 1/4 +11/12+5/6+1/2= Hazardous - Vaporized metals such as zinc, cadmium, lead, chromium and beryllium are: Shielding gasses and deoxidizers, slag formers and ionizing agents - The coating on the electrodes provides: Is a low-hydrogen electrode, Has tensile strength of 110,000 PSI, Can be used in all positions - An E-11018 electrode: Amperage - When adjusting a SMAW power supply you set the: Red - Fuel gas hoses are usually colored: Class C - What type of fire extinguisher should be used on electrical fires?Compressive strength - ______________ of the metal indicates its ability to resist crushing. Oil - What should one NEVER use on gas cylinders, regulators, connection, and hoses? Metallurgically compatible with base metal - When it is necessary to use a backing strip to weld a joint, the backing must be: Straight and reverse - The two types of polarity of direct current flow are: Tensile Strength - _________ is the resistance of a metal to a force that is acting to pull it apart. A DC power source - Direction of current flow (polarity) can be chosen when using: Carburizing - Which acetylene flame has an excess of fuel: Welding Procedure - The step-by-step directions for making a specific weld are referred to as: Carbon steels - Acetylene torches can cut: constant current - The SMAW process uses what type of power supply? 7 - How many minutes can a 300 amp welder with a 70% duty rating be operated safely in a ten minute period if it is being operated at a 300 amp setting? Flammable gases - The oxyfuel cutting process using oxygen and what other types of gases? finger nailing - When an electrode burns off faster on one side than the other, it's known as: Tensile - The property of metal that resists forces acting to pull it apart is its _________ strength.Amount of welding current being used - The selection of a correct lens shade number depends on the: lack of fusion - The failure of a weld bead to fuse the groove walls on to another bead is called: Lack of fusion - The failure of a weld bead to fuse the groove walls on to another bead is called: Undercut - Burning away of the base metal at the toe of the weld is called: Alternating - The kind of electricity that reverses the direction of current flow regularly is called: Magnetic fields - The tendency of the arc to wander away from its intended path is caused by: 6G - A groove weld in the 45 degree position is: Joining by melting - Fusion is a term used in welding that means: Argon - The most commonly used shielding gas for most TIG welding is: Volts across the arc - The heat energy across the arc is produced by the: A change in arc length - Arc voltage can be changed by the operator by: A poor connection - When a hot spot is found around the electrode holder or ground clamp it indicates: Greater than the acetylene working pressure - While cutting with acetylene, the oxygen working pressure is:Electrode diameter - The arc length should about equal the: