Virtual Labs

Principles of Gas Welding and Gas Cutting Processes

Frequently used fuel gas in oxy-fuel welding is

a: Acetylene Explanation

Explanation

b: Biogas Explanation

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c: Coal gas Explanation

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d: Both (a) and (b) Explanation

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Which of the following flame types has more oxygen than acetylene?

a: Balanced flame Explanation

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b: Oxygen-rich flame Explanation

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c: Carbon-rich flame Explanation

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d: None Explanation

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How many different kinds of flames are used in gas welding?

a: 1 Explanation

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b: 2 Explanation

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c: 3 Explanation

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d: 4 Explanation

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Which of the following flames is used to weld brass??

a: Oxygen-rich flame Explanation

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b: Carbon-rich flame Explanation

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c: Balanced flame Explanation

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d: None of the above Explanation

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Which gas cylinder has a permeable interior?

a: Acetylene Cylinder Explanation

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b: Oxygen Cylinder Explanation

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c: Both Explanation

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d: None of the above Explanation

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In the Oxyacetylene welding assembly, the colour of the acetylene cylinder is

a: Blue Explanation

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b: Black Explanation

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c: Maroon Explanation

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d: None of the above Explanation

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Which of the following flames has three zones?

a: Balanced flame Explanation

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b: Carbon-rich flame Explanation

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c: Oxygen-rich flame Explanation

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d: None of the above Explanation

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For joining and cutting, a neutral flame is used in

a: All ferrous materials Explanation

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b: All nonferrous materials Explanation

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c: Both (a) and (b) Explanation

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d: Brass Explanation

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Disadvantage of oxyacetylene welding is

a: Costly and extremely unstable Explanation

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b: Easy to handle Explanation

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c: the maximum temperature is produced Explanation

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d: None Explanation

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What is the colour of the oxygen cylinder in the Oxyacetylene assembly?

a: Green Explanation

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b: Black Explanation

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c: Red Explanation

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d: White Explanation

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A carburizing flame is suitable for welding

a: Mild steel Explanation

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b: high carbon steel Explanation

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c: stainless steel Explanation

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d: Cast iron Explanation

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The hottest part of the oxyacetylene flame is located in the

a: Outer cone Explanation

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b: Inner cone Explanation

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c: Mixing zone Explanation

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d: None of the above Explanation

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An oxidizing flame is suitable for welding

a: Low carbon steel Explanation

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b: high carbon steel Explanation

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c: Aluminium Explanation

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d: Copper Explanation

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