For gas welding, the pressure desired at the welding torch for acetylene is

A 7 to 103 kN/m<sup>2</sup>
B 70 to 280 kN/m<sup>2</sup>
C 280 to 560 kN/m<sup>2</sup>
D 560 to 840 kN/m<sup>2</sup>

Correct Answer: 7 to 103 kN/m<sup>2</sup>

A welding torch head is used to weld metals those are difficult to weld by using electrode. It can be identified by having only one or two pipes running to the nozzle, no oxygen-blast trigger, and two valve knobs at the bottom of the handle letting the operator adjust the oxygen and fuel flow respectively.
For gas welding, the pressure desired at the welding torch for acetylene is 7 to 103 kN/m2.
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Related Questions

For gas welding, the pressure desired at the welding torch for oxygen is
A 7 to 103 kN/m2
B 70 to 280 kN/m2
C 280 to 560 kN/m2
D 560 to 840 kN/m2
In forehand welding, the angle between the welding torch and the work is ________ as compared to backhand welding.
A Same
B Less
C More
D None of these
If the flame of the welding torch is directed towards the progress of welding, then what will you call the welding technique?
A Forehand welding
B Flux cored ARC welding
C Electro slag welding
D Pulsed spray welding
In backhand welding, the angle between the welding torch and the work is kept as
A 30° - 40°
B 40° - 50°
C 50° - 60°
D 60° - 70°
A type of welding flows, which is the result of a perfect proportion and mixture of acetylene and oxygen and is used for fusion welding of steel and cast iron, is
A Carburizing flame
B Oxidizing flame
C Oxy-acetylene flame
D Neutral flame
A friction lighter is normally used for lighting gas welding torch, because of the reason that
A Its initial cost is very low
B Duration of spark created is very small
C Safety of welder is ensured
D It is easier to operate & maintain
Most of the oxy-acetylene welding is done with
A oxidizing flame
B neutral flame
C carburizing flame
D all of these
In backhand welding, the angle between the welding rod and the work is ________ as compared to forehand welding.
A Same
B Less
C More
D None of these
In DC arc welding, if leads are arranged in work as Negative pole of the welding arc and electrode as Positive pole of the welding arc, the arrangement is known as
A Fusion
B Reverse polarity
C Forward welding
D Direct polarity
What is the chemical symbol of acetylene gas?
A CH2
B CH3
C C3H2
D C2H2

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