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Study MCQ
Mechanic Diesel
ARC AND GAS WELDING
Set 5
Set 5
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Q8580
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Which is the safety method for carry the oxy-acetylene gas cylinders?
A
Rolling
B
Sliding
C
Dragging
D
Use a trolly
Q8581
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Which is the stage of heat treatment process?
A
Cooling the metal
B
Heating the metal slowly
C
Hold at a given temperature
D
Heat and cool the metal as soon as possible
Q8582
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What is the importance of case hardening?
A
To increase softness
B
To with stand wear resistance
C
To withstand heavy load
D
To decrease the brittleness
Q8583
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Which valve to be closed first while gas flame snaps out and back fire?
A
Oxygen valve in cylinder
B
Oxygen valve at blow pipe
C
Acetylene valve in cylinder
D
Acetylene valve at blow pipe
Q8584
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Which gas cutting process is suitable for all position, location and under water?
A
Gas cutting
B
Plasma cutting
C
Manual cutting
D
Machine cutting
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