WorksheetsWelding Process Quiz
Total questions: 50
Worksheet time: 50mins
Welding is a process of:
Mechanical fastening
Joining metals by pressure only
Permanent joining by heat with or without pressure
Temporary joining
The most commonly used welding process in industry is:
TIG welding
MIG welding
Shielded Metal Arc Welding (SMAW)
Laser welding
The electrode in SMAW is:
Non-consumable
Consumable
Carbon rod
Tungsten rod
Flux coating on an electrode is used to:
Increase arc voltage
Protect molten metal from atmosphere
Increase current
Cool the weld
Which gas is used for shielding in TIG welding?
Oxygen
Nitrogen
Argon
Hydrogen
TIG welding electrode is made of:
Copper
Aluminum
Tungsten
Iron
MIG welding uses:
Flux-coated electrode
Bare wire electrode with shielding gas
Carbon electrode
Tungsten electrode
Which current is commonly used for SMAW?
AC only
DC only
Both AC and DC
High frequency AC
The heat affected zone (HAZ) is:
Fully melted metal
Unaffected base metal
Area altered by heat but not melted
Flux region
The purpose of preheating is to:
Increase hardness
Reduce cooling rate
Increase weld speed
Improve arc stability
Porosity in welds is caused by:
Excess current
Trapped gases
Fast cooling
Thick electrode
Slag inclusion occurs due to:
Improper cleaning
High voltage
Low current
Excess shielding gas
Undercut is a defect that:
Adds metal to weld
Removes metal at weld toe
Cracks the weld
Causes porosity
Which welding process uses no flux?
SMAW
SAW
MIG
Flux-cored welding
Submerged Arc Welding (SAW) is best suited for:
Thin sheets
Outdoor welding
Thick plates
Aluminum welding
Welding current mainly affects:
Weld color
Penetration
Slag formation
Weld length
Arc length is the distance between:
Power source and electrode
Electrode tip and workpiece
Flux and weld pool
Two base metals
Excessive arc length causes:
Poor penetration
Stable arc
Deep penetration
No spatter
Distortion in welding is caused by:
Uniform heating
Uneven heating and cooling
Low current
Short weld length
The welding position 1G refers to:
Vertical
Horizontal
Flat
Overhead
Which joint is most common in welding?
Lap joint
Butt joint
Tee joint
Corner joint
Back gouging is done to:
Remove slag
Improve penetration
Reduce distortion
Clean flux
Which metal is difficult to weld due to oxidation?
Steel
Copper
Aluminum
Cast iron
Cast iron is usually welded using:
Mild steel electrode
Nickel electrode
Aluminum electrode
Tungsten electrode
Post-weld heat treatment is done to:
Increase weld speed
Reduce residual stress
Increase hardness
Improve appearance
Welding symbols are standardized by:
BIS / IS standards
ISO only
AWS only
ASME only
Root gap is:
Distance between weld passes
Space between two plates at root
Height of reinforcement
Depth of penetration
Penetration means:
Width of weld
Depth of fusion
Length of weld
Height of bead
Which defect is most dangerous?
Porosity
Crack
Spatter
Slag
The polarity DCEN means:
Electrode positive
Workpiece positive
Electrode negative
AC supply
Welding helmet protects against:
Heat only
UV and IR radiation
Spatter only
Noise
Which test is non-destructive?
Tensile test
Bend test
Radiographic test
Impact test
Dye penetrant test is used to detect:
Internal defects
Surface cracks
Porosity inside
Slag inclusion
Ultrasonic testing uses:
X-rays
Sound waves
Magnetic field
Heat
Hardness of weld increases with:
Slow cooling
Fast cooling
Preheating
PWHT
Welding of stainless steel requires:
Oxygen shielding
Proper control of heat
High carbon electrode
No shielding
Flux in welding helps to:
Conduct electricity
Remove impurities
Increase metal strength
Increase voltage
Which process gives the cleanest weld?
SMAW
MIG
TIG
SAW
The main cause of weld cracks is:
Residual stress
Low voltage
Long arc
Slag
Welding speed too high results in:
Excess penetration
Poor fusion
Wider bead
Better strength
Edge preparation is done to:
Improve appearance
Reduce welding time
Ensure proper penetration
Increase distortion
Which gas is commonly used in MIG welding of steel?
Argon
CO₂
Oxygen
Nitrogen
Overhead welding position is:
1G
2G
3G
4G
Weld reinforcement should be:
Excessive
Minimal and smooth
Sharp
Uneven
Which electrode is used for mild steel?
E6013
E308
E7018 stainless
Nickel rod
Spatter is caused by:
Correct current
Stable arc
Excessive current
Proper polarity
Welding fumes are hazardous because they contain:
Oxygen
Metal oxides
Water vapor
Nitrogen
Which joint requires least weld metal?
Lap
Butt
Tee
Corner
The primary function of shielding gas is to:
Increase heat
Protect weld pool
Cool electrode
Increase penetration
Indian Welding Society (IWS) mainly promotes:
Manufacturing
Welding education & technology
Steel production
Construction only
