Prepare for your examinations with a set of multiple choice questions (MCQs) related to Gas Tungsten Arc Welding for Welder Trade. The questions are likely designed to test a user’s knowledge or understanding of Mechanic Diesel concepts and may be useful for exam preparation or self-assessment. The website may be a helpful resource for individuals studying to become Welder or seeking to improve their understanding of Welder principles.

Gas Tungsten Arc welding

What are the types of joints in friction welding? T joint Lap joint Butt joint Corner joint

What is the non-consumable electrode of high melting point used in TIG welding? Carbon electrode Copper electrode Tungsten electrode Aluminium electrode

What is also referred to as a GTAW? TIG welding MIG welding STUD welding GAS welding

What type of metals joined in friction welding? Similar metal Dissimilar metal Non metal group Any metal flat type

What is the name of the part marked as 'x' in the Laser beam welding?

Laser beam Ruby rod Cooling system Flash lamp

What crystal (rod) is used in laser beam welding? Iron Copper Ruby Stainless steel

What is the name of the part marked as 'X' in the Laser beam welding?

Laser beam Ruby rod Cooling system Flash lamp

What type of metal section can be welded by friction welding? Pipe and round rods Flats and square roof Think sheet Heavy sheet

What is the principle of friction welding? One member stationary and another rotating type Both members rotates Both members are heated One member is heated and another rotating

Which welding process does not require the supply of external heat? Seam welding Friction welding Flash butt welding Spot welding

What stage of the metal the friction welding is completed by applying high pressure? Fusion stage Non fusion stage Plastic stage Only heating stage

What is the full form of GTAW? Groove tungsten arc welding Grip tungsten arc welding Gas tungsten arc welding Galvanised tungsten arc welding

What is the angle of the electrode tip by setting DCEN for SS welding by TIG welding process? 50°C 40°C 45°C 60°C

What is the source of heat in the friction welding process? Chemical heating Electrical heating Mechanical friction Thread heating

Which of the following properties of metal will not allow the application of friction welding? Metals with high compressive strength Metals with low compressive strength Metals with high tensile strength Metals with low carbon content

Which welding process is effective for nickel and titanium? Arc welding TIG welding Gas welding MIG welding

Which is the welding process that maintains electric arc between non-consumable tungsten electrodes and the base metal? SAW MMAW MIG TIG

What is the name of the defect in which the weld metal did not melt with base metal in TIG process? Porosity Lack of penetration Lack of fusion Under cut

What is the bore dia of ceramic nozzle to avoid porosity while doing TIG welding? Small sized Large sized Correct sized Too small sized

How to avoid fast burning of tungsten in the TIG welding process? Long arc length By using DCEP By not using shielding By using contaminated base metal

Which part of the equipment in the electron beam is direct and controlled in an electron beam welding process? Electron gun Electron beam Vacuum chamber Atmosphere

What devices are provided to reflect the light coming to the ends of ruby rod in laser beam welding? Laser tube Reflecting mirrors Flash lamps Shutter

Which gas is generally used in gas laser type welding? Carbon - di - oxide Neon gas Argon gas Oxygen

In which welding process the work pieces are melted and jointed by a narrow beam of light source? Electron beam welding Laser beam welding Plasma arc welding Micro plasma arc welding

Which is adjusted in Electron beam welding to eliminate the defect of porosity? Spot size Deflection Weld penetration Focal position / focus current

What is the approximate revolution of the rotating member in the friction welding process, to affect the weld joint? 1500 rpm 2000 rpm 2500 rpm 3000 rpm

Which type of material friction welding is more suitable for joining? Similar metals Dissimilar metals Non metal group Any metal flat type

Which gas is inactive or deficient in active chemical properties in TIG welding? Argon Oxygen Hydrogen Acetylene

What is the purpose of inert gas used in TIG welding? Contamination in the weld metal To protect the molten metal from the atmospheric contamination To stabilize the Arc To get more spatters

Which gas is used as inert gas in GTAW for increased speed? Oxygen Helium Acetylene Hydrogen

How much temperature can the GTAW process produce? 3000°F 3500°F 4000°F 4500°F

What is the main source of heat to the workpiece in TIG welding? Cable current By Torch By tube By electrode

How is the heat affected zone covered and protected from atmospheric contaminants in GTAW? Argon gas Oxygen Fuel gas Active gas

What is the use of a little hydrogen added to argon for welding of stainless steel in GTAW process? Improves heat Improves heat transfer Improves good welding Improves metal property

How molten metal is shielded from the atmospheric contamination as a blanket in GTAW? By using inert gas By using fuel gas By using fuel gas By using fuel and supportable gas

How is the inert gas directed to flow over the weld pool, in TIG welding? Through copper nozzle Through brass nozzle Through ceramic nozzle Through metal nozzle

What is the name of the part of the TIG torch for holding tungsten electrodes? Collet Adaptor Ceramic nozzle Electrode cap

What is the purpose of the H.F. unit in TIG welding? To produce the AC To change AC to DC To produce power supply To initiate the arc without touching the electrode on the base metal

Which type of cooling system is used in heavy duty welding operations? Air cooled Oil cooled Gas cooled Water cooled

Which electrode is used in the TIG welding process? Zinc electrode Carbon electrode Tungsten Magnesium electrode

What is the device used to show the volume of the inert gas allowed to go to the welding torch in TIG welding? Flow meter CO2 regulator Pressure meter Argon regulator

Which gas is chemically inactive with any metals in hot or cold condition in TIG welding? Argon Oxygen Nitrogen Hydrogen

Which type of tungsten electrode is suitable for welding of SS by TIG process with DC? Pure tungsten electrode Cerium tungsten electrode Thoriated tungsten electrode Zirconium tungsten electrode

What is the process of replacing the air in a pipe with argon gas that will not react with the root of the weld? Pouring Purging Pre filling Pool weld

Which electrode is used to produce arcs in the GTAW process? M.S electrode Cast iron electrode Tungsten electrode Stainless steel electrode

Which will not be present on the weld bead due to use of shielding gas in the TIG welding process? Slag Over lap Under cut Penetration

Which process can easily weld thin metal? MIG welding Tungsten arc welding Submerged arc welding Manual metal arc welding

Why is argon gas used in welding of stainless steel in the TIG welding process? Inert gas protects the weld It helps in melting the electrode It prevents porosity It is cheap

Which welding machine is to be used for welding of aluminum by TIG welding process? AC welding machine DC welding machine AC DC transformer DC transformer

What is the defect caused by high current in TIG welding? Crack Porosity Under cut Lack of penetration

What is the defect while TIG welding if the current is too low? Crack Porosity Under cut Lack of fusion

What is right about DCRP electrode TIG welding ? Improper tungsten size Improper shielding gas flow Improperly prepared tungsten Weld circuit polarity is incorrect

What is the cause for poor weld bead colour in TIG welding process? Too much arc length Excessive heating in torch Tungsten melting into weld puddle Contaminated or improper filler metal

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