Manual Metal Arc M.M.A (Leaving Cert Engineering): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What temperature can the electric arc reach in arc welding?
What temperature can the electric arc reach in arc welding?
Over 3,000°C
What voltage does the transformer reduce mains supply to in MMA welding?
What voltage does the transformer reduce mains supply to in MMA welding?
80-100V
What type of arc welding is MMA welding described as?
What type of arc welding is MMA welding described as?
Most basic & widely used type
What is the function of the work clamp in MMA welding?
What is the function of the work clamp in MMA welding?
Attaches to workpiece to complete circuit
What does the flux coating create to prevent atmospheric contamination?
What does the flux coating create to prevent atmospheric contamination?
Protective gas shield
What is the purpose of the slag layer formed by the flux coating?
What is the purpose of the slag layer formed by the flux coating?
Helps weld cool slowly & prevents brittleness
What tool is used to remove slag after welding?
What tool is used to remove slag after welding?
Chipping hammer
What condition must welding stations be kept in for electrical safety?
What condition must welding stations be kept in for electrical safety?
Completely free from dampness
What happens if any component is missing in the MMA welding circuit?
What happens if any component is missing in the MMA welding circuit?
No current flows & welding is impossible
What does the electrode holder allow the welder to do?
What does the electrode holder allow the welder to do?
Control electrode position
Which material is MMA welding particularly suitable for?
Which material is MMA welding particularly suitable for?
Mild steel plates
What two key things does the flux coating provide during and after welding?
What two key things does the flux coating provide during and after welding?
Gas shield & slag layer