#1
What is the primary function of a welding helmet?
To protect the eyes from harmful light
ExplanationEye protection from harmful light.
#2
Which welding position involves welding on the upper side of a horizontal joint?
Flat position
ExplanationFlat position involves upper side welding.
#3
What does the term 'welding position' refer to in welding?
The orientation of the weld joint in relation to gravity
ExplanationOrientation of weld joint in relation to gravity.
#4
What is the purpose of a welding positioner in arc welding?
To rotate and tilt the workpiece for optimal welding angles
ExplanationPositioner rotates workpiece for optimal angles.
#5
What is the purpose of a welding blanket?
To protect the work area from sparks and heat
ExplanationBlanket protects from sparks and heat.
#6
Which type of current is commonly used in arc welding?
Direct current (DC)
ExplanationDirect current (DC) is commonly used.
#7
What is the purpose of flux in welding?
To protect the weld pool from atmospheric contamination
ExplanationFlux protects weld pool from contamination.
#8
What is the purpose of a filler metal in welding?
To fill gaps in the base metal
ExplanationFiller metal fills gaps in base metal.
#9
Which welding process uses a non-consumable tungsten electrode?
Gas Tungsten Arc Welding (GTAW)
ExplanationGTAW uses non-consumable tungsten electrode.
#10
Which welding process is also known as 'stick welding'?
Shielded Metal Arc Welding (SMAW)
ExplanationSMAW is known as stick welding.
#11
What is the purpose of a backing strip in welding?
To prevent distortion of the base metal
ExplanationBacking strip prevents base metal distortion.
#12
Which welding process uses a consumable electrode and a continuous wire feed?
Gas Metal Arc Welding (GMAW)
ExplanationGMAW uses consumable electrode and wire feed.
#13
What is the purpose of preheating in welding?
To reduce the risk of hydrogen cracking
ExplanationPreheating reduces hydrogen cracking risk.
#14
What is the purpose of post-weld heat treatment (PWHT) in welding?
To relieve residual stresses and improve mechanical properties
ExplanationPWHT relieves stresses and improves properties.
#15
In which welding process is a shielding gas not required?
Submerged Arc Welding (SAW)
ExplanationSAW doesn't require shielding gas.
#16
What is the primary advantage of pulsed gas metal arc welding (GMAW-P) over traditional GMAW?
Improved control of heat input
ExplanationGMAW-P offers improved heat input control.
#17
In which welding process is a flux used instead of shielding gas?
Submerged Arc Welding (SAW)
ExplanationSAW uses flux instead of shielding gas.