Welder ITI - 100 Technical MCQ

A. A gas flame

B. A mechanical contact

C. An electric arc ✓ Correct answer

D. A plasma jet only

A. Shielded Mechanical Arc Welding

B. Shielded Metal Arc Welding ✓ Correct answer

C. Submerged Metal Air Welding

D. Standard Metal Argon Welding

A. OAW

B. GMAW ✓ Correct answer

C. SMAW

D. Brazing

A. Resistance spot welding

B. GMAW

C. GTAW ✓ Correct answer

D. SMAW

A. MAG welding

B. Stick welding

C. MIG welding

D. TIG welding ✓ Correct answer

A. Stick welding

B. MIG/MAG welding ✓ Correct answer

C. Gas brazing

D. TIG welding

A. OAW

B. GTAW

C. SMAW

D. Resistance spot welding ✓ Correct answer

A. Cool the workpiece only

B. Protect the weld zone from atmospheric contamination ✓ Correct answer

C. Increase plate thickness

D. Remove all slag mechanically

A. Brazing

B. Resistance welding

C. Plasma arc cutting ✓ Correct answer

D. SMAW

A. GTAW

B. Oxy-acetylene welding ✓ Correct answer

C. GMAW

D. Resistance spot welding

A. It only supplies shielding gas

B. It only measures temperature

C. It clamps the workpiece

D. It carries current and provides filler metal ✓ Correct answer

A. To eliminate the need for inspection

B. To reduce electrical voltage to zero

C. To obtain suitable joint geometry and penetration ✓ Correct answer

D. To make the plate non-conductive

A. Holding parts in position before final welding ✓ Correct answer

B. Cooling the weld

C. Measuring current

D. Removing slag

A. Butt joint

B. T-joint ✓ Correct answer

C. Lap joint

D. Edge joint

A. Butt joint ✓ Correct answer

B. T-joint

C. Lap joint

D. Corner joint

A. Edge joint

B. Lap joint ✓ Correct answer

C. Butt joint

D. T-joint

A. Horizontal butt welding position

B. Overhead fillet welding position

C. Vertical fillet welding position

D. Flat fillet welding position ✓ Correct answer

A. Vertical fillet welding position

B. Horizontal fillet welding position

C. Overhead fillet welding position ✓ Correct answer

D. Flat fillet welding position

A. Horizontal groove welding position

B. Flat groove/butt welding position ✓ Correct answer

C. Overhead groove welding position

D. Vertical groove welding position

A. Vertical groove welding position ✓ Correct answer

B. Flat groove welding position

C. Horizontal groove welding position

D. Overhead groove welding position

A. The diameter of the gas hose

B. The resistance of the arc

C. The width of the electrode coating

D. The inclination of the weld axis from the horizontal reference ✓ Correct answer

A. The rotation of a gas cylinder

B. The rotation speed of a grinding wheel

C. The angular orientation of the workpiece around the weld axis/reference ✓ Correct answer

D. The frequency of AC supply

A. The distance between the electrode tip and the workpiece/weld pool ✓ Correct answer

B. The width of the weld bead

C. The length of the gas hose

D. The length of the welding cable

A. Weld quality problems and unstable welding conditions ✓ Correct answer

B. Automatic dimensional correction

C. Zero heat input

D. Permanent elimination of defects

A. The angle of a pipe joint

B. The electrical connection arrangement of positive and negative terminals ✓ Correct answer

C. The type of filler rod

D. The gas-cylinder color

A. To remove contaminants that can affect weld quality ✓ Correct answer

B. To change the material into plastic

C. To eliminate the need for filler metal

D. To increase plate weight

A. Generating welding current

B. Producing shielding gas

C. Cutting cylinders

D. Checking weld dimensions/profile ✓ Correct answer

A. Internal defects that are always invisible

B. Gas-cylinder pressure only

C. Visible surface defects and weld appearance issues ✓ Correct answer

D. Electrical resistance of the shop

A. Crater only

B. Undercut ✓ Correct answer

C. Slag inclusion only

D. Porosity

A. A welding position

B. Gas cavities or pores trapped in the solidified weld metal ✓ Correct answer

C. A type of electrode holder

D. A deliberate surface groove

A. Gas pressure inside a cylinder

B. Non-metallic material trapped in the weld metal ✓ Correct answer

C. A type of shielding gas

D. A pipe joint

A. A type of electrode coating

B. Unwanted deformation caused by uneven heating and cooling ✓ Correct answer

C. A welding gas

D. A weld gauge

A. Ignore preheating requirements

B. Avoid joint fit-up

C. Always increase current to maximum

D. Control heat input and use suitable welding sequence ✓ Correct answer

A. A grinding-wheel failure

B. A gas leak from a cylinder

C. A type of weld joint

D. Deflection of the welding arc by magnetic effects ✓ Correct answer

A. Adjust welding setup/polarity and work/earth connection as appropriate ✓ Correct answer

B. Use a damaged electrode

C. Remove the earth connection

D. Increase gas leakage

A. To make shielding gas unnecessary

B. To reduce the joint to zero thickness

C. To eliminate all inspection

D. To control cooling rate and reduce thermal problems ✓ Correct answer

A. The temperature of the electrode oven only

B. The temperature of the work/joint between welding passes ✓ Correct answer

C. The room temperature only

D. The temperature of the gas cylinder

A. To increase gas pressure

B. To modify/control the metallurgical and stress condition after welding ✓ Correct answer

C. To clean a welding helmet

D. To sharpen a welding nozzle

A. To measure gas flow directly

B. To measure electrical current

C. To help check whether a surface reaches a specified temperature range ✓ Correct answer

D. To mark welding symbols only

A. It eliminates electrical current

B. It makes the electrode non-consumable

C. It acts only as a measuring scale

D. It provides shielding and helps form/protect the weld during welding ✓ Correct answer

A. To change them into tungsten

B. To remove the core wire

C. To increase their physical length

D. To control moisture pickup and maintain electrode performance ✓ Correct answer

A. Weld-quality problems such as hydrogen-related cracking risk ✓ Correct answer

B. Improved gas-cylinder pressure

C. Higher plate thickness

D. Automatic distortion correction

A. The size of a welding table

B. The ability of a gas cylinder to hold pressure

C. The ability of a material to be welded under suitable conditions to obtain an acceptable joint ✓ Correct answer

D. The hardness of an electrode holder

A. It is a gas-cylinder defect

B. It is a type of welding position

C. It is a weld-related corrosion/metallurgical issue that can affect stainless-steel joints ✓ Correct answer

D. It is a grinding-wheel specification

A. Glass

B. Wood

C. Concrete

D. Aluminium ✓ Correct answer

A. Acetylene

B. Hydrogen peroxide

C. Oxygen

D. Argon ✓ Correct answer

A. Helium ✓ Correct answer

B. Oxygen

C. Acetylene

D. Chlorine

A. To cut the workpiece mechanically

B. To supply acetylene

C. To act as a gas regulator

D. To establish and maintain the arc without being consumed like a filler wire ✓ Correct answer

A. Measuring weld size only

B. Generating compressed air

C. Holding the tungsten electrode and directing shielding gas/arc to the joint ✓ Correct answer

D. Storing electrodes

A. To increase electrode moisture

B. To cool the gas cylinder

C. To protect the reverse/root side of the weld from atmospheric contamination ✓ Correct answer

D. To remove all current

A. It generates shielding gas

B. It replaces the tungsten electrode

C. It supplies additional filler metal to the weld pool when required ✓ Correct answer

D. It controls cylinder pressure

A. The rate at which the electrode wire is fed toward the weld zone ✓ Correct answer

B. The speed of a grinding wheel

C. The speed of the cooling fan

D. The speed of the gas cylinder valve

A. No power source

B. Constant-voltage power source ✓ Correct answer

C. Constant-pressure gas cylinder only

D. Mechanical-only power source

A. Bench height

B. Helmet size

C. Wire feed speed ✓ Correct answer

D. Cylinder paint color

A. Carbon dioxide ✓ Correct answer

B. Oxygen

C. Acetylene

D. Nitrogen dioxide

A. A gas-cutting flame type

B. A mechanical pipe-cutting method

C. A GTAW electrode preparation method

D. A short-circuiting mode of metal transfer used for controlled transfer at suitable settings ✓ Correct answer

A. A solid tungsten rod

B. A tubular wire containing flux materials inside ✓ Correct answer

C. A gas hose

D. A copper pipe

A. To generate oxygen

B. To feed electrode wire continuously to the torch ✓ Correct answer

C. To cool the welding table

D. To measure weld penetration

A. No change in the workpiece

B. Automatic elimination of distortion

C. Greater thermal effects and possible distortion ✓ Correct answer

D. Zero penetration in every case

A. Only by changing the workbench

B. Only by changing helmet color

C. By controlling relevant welding parameters and technique ✓ Correct answer

D. Only by changing cylinder labels

A. An arc welding process in which the arc is submerged under granular flux ✓ Correct answer

B. A gas welding process using acetylene

C. A resistance process using spot electrodes

D. A manual plastic joining process

A. To replace the electrode

B. To measure arc voltage

C. To supply shielding gas

D. To support/control the root of a weld as required ✓ Correct answer

A. A tungsten arc under argon only

B. Mechanical riveting

C. A chemical reaction that produces intense heat for joining ✓ Correct answer

D. Electrical resistance between two spot electrodes

A. Measuring gas pressure

B. Removing metal to correct or modify a weld/joint area ✓ Correct answer

C. Checking cylinder color

D. Drying electrodes

A. Nick-break test

B. Dye penetrant test ✓ Correct answer

C. Free bend test

D. Fillet fracture test

A. Magnetic particle test ✓ Correct answer

B. Free bend test

C. Fillet fracture test

D. Nick-break test

A. Dye penetrant test

B. Nick-break test ✓ Correct answer

C. Magnetic particle test

D. Visual inspection

A. Visual inspection

B. Dye penetrant test

C. Free bend test ✓ Correct answer

D. Magnetic particle test

A. Plasma cutting speed

B. The quality/condition of a fillet weld by fracturing the specimen ✓ Correct answer

C. Electrode moisture

D. Gas-cylinder pressure

A. Destructive and non-destructive testing ✓ Correct answer

B. Hot and cold testing only

C. Manual and automatic testing only

D. Gas and electrical testing only

A. Using tungsten electrode shielding gas

B. Using only mechanical shearing

C. Using spot-welding electrodes

D. Heating the material with a gas flame and using oxygen for cutting action ✓ Correct answer

A. Gear hobbing

B. Thread cutting

C. Bevel cutting ✓ Correct answer

D. Milling

A. Plasma-only flame

B. Neutral flame ✓ Correct answer

C. Square flame

D. Magnetic flame

A. To help prevent flame/gas flashback from propagating through the gas system ✓ Correct answer

B. To increase electrode current

C. To hold a workpiece

D. To measure weld hardness

A. Generating electric current

B. Holding filler rods

C. Reducing and controlling gas pressure from the cylinder to the required working pressure ✓ Correct answer

D. Measuring weld size

A. A cutting blowpipe has no gas connection

B. They are identical in every function

C. A welding blowpipe always uses electricity

D. A cutting blowpipe provides the arrangement needed for the oxygen cutting jet ✓ Correct answer

A. Resistance spot welding parameters

B. GTAW tungsten grinding only

C. Plasma arc polarity only

D. Oxy-acetylene welding techniques ✓ Correct answer

A. Joining metals by heating and using a filler metal with suitable flux without melting the base metal as the primary joining mechanism ✓ Correct answer

B. Cutting metal with plasma

C. Joining by riveting only

D. Grinding two surfaces together

A. To generate arc voltage

B. To cool the torch

C. To help clean/protect the joint surfaces and promote proper filler-metal flow ✓ Correct answer

D. To replace the filler metal

A. Only tungsten

B. Only cast iron

C. Only aluminium

D. Copper, MS and stainless steel ✓ Correct answer

A. A type of SMAW electrode

B. Brazing that uses a silver-containing filler alloy ✓ Correct answer

C. A plasma cutting mode

D. A magnetic inspection method

A. Cold rolling

B. Mechanical pressure only

C. Heating produced by changing electromagnetic fields ✓ Correct answer

D. Heating only by an acetylene flame

A. To hold the electrode coating

B. To supply shielding gas

C. To complete the welding electrical circuit through the workpiece ✓ Correct answer

D. To measure plate thickness

A. To measure gas pressure

B. To supply oxygen

C. To inspect porosity

D. To securely hold the electrode and conduct welding current ✓ Correct answer

A. To increase arc voltage

B. To create shielding gas

C. To reduce adhesion of welding spatter to suitable surrounding surfaces ✓ Correct answer

D. To dry electrodes

A. Generating an arc

B. Controlling wire feed

C. Measuring gas flow

D. Removing slag from suitable weld surfaces ✓ Correct answer

A. Setting gas pressure

B. Measuring current

C. Cleaning surfaces and removing loose residue/slag ✓ Correct answer

D. Changing polarity

A. To protect the eyes/face from welding radiation and intense light while allowing a suitable viewing state ✓ Correct answer

B. To remove distortion

C. To regulate gas pressure

D. To increase welding current

A. To cool the weld pool

B. To increase cylinder pressure

C. To measure arc length

D. To control electrode moisture before use ✓ Correct answer

A. Testing welds magnetically

B. Joining plastics only

C. Removing all surface material

D. Depositing a wear-resistant layer on a component surface ✓ Correct answer

A. It changes steel into aluminium

B. It eliminates the need for an electrode

C. It prevents all heat generation

D. It helps obtain proper bonding and weld quality ✓ Correct answer

A. Only TIG with tungsten

B. Only spot welding

C. Only plasma cutting

D. OAW/SMAW with appropriate cast-iron or bronze filler/electrode options ✓ Correct answer

A. Cylinder gas purity only

B. Room temperature

C. Electrode chemical composition only

D. Weld dimensions/profile and related geometric features ✓ Correct answer

A. Welding Pressure System

B. Welding Procedure Specification ✓ Correct answer

C. Workpiece Position Standard

D. Wire Protection Schedule

A. Procedure Qualification Record ✓ Correct answer

B. Plate Quantity Report

C. Pressure Quality Regulation

D. Process Quick Reference

A. To replace inspection

B. To specify the controlled welding procedure and parameters for a job ✓ Correct answer

C. To identify a worker's attendance

D. To measure gas-cylinder weight

A. To store electrodes

B. To control helmet shade

C. To record qualification results supporting a welding procedure ✓ Correct answer

D. To measure plate thickness

A. Only the color of the workshop wall

B. Only machine serial numbers

C. Only employee names

D. Joint type, weld symbol, dimensions and required fabrication details ✓ Correct answer

A. WHO and IMF

B. BIS and AWS ✓ Correct answer

C. ISO only

D. UNESCO only

A. To increase gas-cylinder pressure

B. To remove the need for tack welds in every case

C. To establish correct alignment, gap and joint geometry before welding ✓ Correct answer

D. To measure electrode moisture

The questions follow the topics of the DGT CTS 2.0 curriculum for the trade. Always check the latest syllabus and your state or institute notices, because trade lists and weightage can change.

There are 100 multiple-choice questions with one correct option each. The quiz shows your score at the end; there is no negative marking on this practice page.

After each answer read the explanation, note the fact in your own words, and revisit the questions you missed in the answer key below. Repeating the set after a few days works better than reading it once.