WorksheetsWelding Basics Quiz
Total questions: 20
Worksheet time: 10mins
What is the main purpose of PPE in welding?
Improve weld appearance
Increase welding speed
Protect the welder from hazards
Reduce material costs
Which welding process uses a continuously fed wire electrode and shielding gas?
MMA (Stick welding)
TIG welding
MIG welding
Oxy-acetylene welding
What does MMA stand for in welding?
Manual Metal Arc
Machine Metal Arc
Mechanical Metal Assembly
Manual Metal Application
Which gas is commonly used as a shielding gas in MIG welding mild steel?
Oxygen
Carbon dioxide
Nitrogen
Hydrogen
What tool is used to remove slag after welding?
Wire brush
Chipping hammer
Angle grinder
File
Which joint type joins two pieces of metal at right angles?
Butt joint
Lap joint
Tee joint
Edge joint
What is the correct unit for measuring welding current?
Volts
Ohms
Watts
Amps
Why is correct earth (ground) connection important?
Improves weld color
Prevents electrical shock and arc instability
Reduces noise
Increases electrode life
Which defect is caused by trapped gas in the weld metal?
Undercut
Cracking
Porosity
Lack of fusion
What position is welding carried out on a flat horizontal surface?
Vertical
Overhead
Horizontal
Flat
What does a welding procedure specify?
Welder’s name
Type of PPE only
How the weld should be made
Cost of materials
Which hand tool is used to measure internal and external dimensions accurately?
Steel rule
Tape measure
Vernier caliper
Try square
What is the main hazard of welding fumes?
Noise pollution
Skin irritation
Respiratory problems
Eye strain
What angle is commonly used for a fillet weld in a tee joint?
30°
45°
60°
90°
Which material is most commonly welded in basic fabrication training?
Aluminum
Stainless steel
Cast iron
Mild steel
What should be done before striking an arc?
Turn off ventilation
Check equipment and PPE
Remove earth clamp
Increase wire speed fully
Which process uses a non-consumable tungsten electrode?
MIG
MMA
TIG
Flux-cored
What causes lack of fusion in a weld?
Too much heat
Incorrect joint preparation or low heat
Excessive wire speed
Clean material
Which symbol on a drawing indicates a weld?
Circle
Triangle
Arrow with reference line
Square
Why is material preparation important before welding?
To improve paint adhesion
To reduce noise
To ensure good weld quality and strength
To increase cooling time
