ARC AND GAS WELDING - Practice Mode

1) Which is the safety method for carry the oxy-acetylene gas cylinders?

Rolling Sliding Dragging Use a trolly

Correct Answer: Use a trolly

2) Which is the stage of heat treatment process?

Cooling the metal Heating the metal slowly Hold at a given temperature Heat and cool the metal as soon as possible

Correct Answer: Heating the metal slowly

3) What is the importance of case hardening?

To increase softness To with stand wear resistance To withstand heavy load To decrease the brittleness

Correct Answer: To with stand wear resistance

4) Which valve to be closed first while gas flame snaps out and back fire?

Oxygen valve in cylinder Oxygen valve at blow pipe Acetylene valve in cylinder Acetylene valve at blow pipe

Correct Answer: Oxygen valve at blow pipe

5) Which gas cutting process is suitable for all position, location and under water?

Gas cutting Plasma cutting Manual cutting Machine cutting

Correct Answer: Plasma cutting

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