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Fitter Set-1
Welding
22

Welding MCQ with Answers

22) The top edge is melted round and the cut face is not smooth in gas cutting. This is due to

extremely slow cutting speed

insufficient acetylene pressure

the tip being hold too high

too much cutting oxygen pressure

Answer is:

the tip being hold too high

Welding MCQ with Answers

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23) In a gas cut plate, the cut shows grooves and has deep drag lines. This is due to

tip too close to the cut surface

too much travel speed

less oxygen pressure

smaller size cutting nozzle

Answer is:

tip too close to the cut surface

24) In a gas cut plate, the cut is high quality although there is some surface roughness caused by vertical drag lines. This is due to

less preheating flame

impure cutting oxygen

too slow cutting speed

smaller size cutting nozzle

Answer is:

too slow cutting speed

25) The size of the cutting nozzle used in oxy-acetylene cutting process depends mainly on

thickness of metal to be cut

purity of oxygen

duration of cut

type of cutting blowpipe

Answer is:

thickness of metal to be cut

26) The size of a welding machine is determined by

Input amperage

Output amperage

Open circuit voltage

Closed circuit voltage

Answer is:

Output amperage

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