Arc & Oxy-Acetylene Welding is one of 9 topics in the Grade 11 Agricultural Technology CAPS syllabus, covered across 3 lessons on Study Vault. Below are real practice questions from this topic with full worked answers.
Sample practice questions
Easy
1. What creates the intense heat used to melt metal during arc welding?
An electric arc between the electrode and the workpiece
A controlled oxygen and acetylene gas flame
Friction between two moving metal surfaces
Compressed air passing through a nozzle
Answer: An electric arc between the electrode and the workpiece — Arc welding works by passing a high electrical current between an electrode and the workpiece, creating an intense electric arc that generates enough heat to melt the metal.
Easy
2. Which arc welding component completes the electrical circuit by connecting to the workpiece?
The earth clamp
The welding helmet
The flux coating
The striker
Answer: The earth clamp — The earth clamp completes the electrical circuit by connecting the welding machine to the workpiece being welded.
Medium
3. Name the modern, compact, lightweight arc welding machine type that uses electronic circuitry for a more stable arc and greater portability.
Answer: inverter welder — An inverter welder is a modern, compact, lightweight welding machine using electronic circuitry to convert and control welding current more efficiently, offering a more stable arc and greater portability.
