18 Questions
What is the minimum size of metal that arc welding is best suited for?
4 mm
What is the primary purpose of the electrode in the arc welding process?
To serve as a filler rod
What is the primary factor in determining the heat input in arc welding?
Current or amperage
What is the correct orientation of the plates and axis of the weld in the overhead position?
Plates and axis vertical, but welding from the underside
What is the process of fusing metals using the heat of an electric arc?
Arc welding
What is the essential factor in proper welding procedures that affects the condition of the weld?
All of the above
What is the primary advantage of using small electrodes in welding?
To achieve low heat input in especial alloy or castings
In what type of welding is a flux shield used to protect against weather elements?
FLUX-CORED ARC WELDING (FCAW)
What is the recommended size of electrodes for overhead welding?
Less than 5.0 mm in diameter
What is the primary application of flux-cored arc welding?
Welding thicker metals
Why may a small electrode be necessary for the first pass or stringer bead?
To assure complete fusion at the roots of the joint
In what position of welding are electrodes smaller by one size than those used for flat position recommended?
Horizontal
What is the consequence of using too high current in welding?
Harmful overheating of the base metal with undercutting
How does too low current affect welding?
Little or no penetration
What is the relationship between the diameter of the core wire and the current required?
The greater the diameter, the higher the current required
When welding thick and heavy pieces, what amount of current is generally needed?
Less current compared to light, thin sections
Which type of welding position generally requires less current?
Vertical and overhead positions
Why is it recommended to use the largest size electrode applicable?
Economic reasons
Test your knowledge on arc welding, specifically SMAW (Shielded Metal Arc Welding), which is commonly used in heavy equipment repair, steel erection, pipeline welding, manufacturing, and construction. Learn about how metals are fused using the heat of an electric arc and the role of electrodes in the process.
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