WELDING - Practice Mode

1) What colour is painted on oxygen cylinder?

Maroon colour Red colour Black colour Yellow colour

Correct Answer: Black colour

2) What is the pressure range between the oxygen cylinder?

90 to 120 kg/cm<sup>2</sup> 120 to 150 kg/cm<sup>2</sup> 15 to 16 kg/cm<sup>2</sup> 14 to 15 kg/cm<sup>2</sup>

Correct Answer: 120 to 150 kg/cm<sup>2</sup>

3) What is the pressure range between the dissolved acetylene gas cylinder?

14 to 15 kg/cm<sup>2</sup> 15 to 16 kg/cm<sup>2</sup> 120 to 150 kg/cm<sup>2</sup> 110 to 120 kg/cm<sup>2</sup>

Correct Answer: 15 to 16 kg/cm<sup>2</sup>

Explanation:

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4) What is the root gap provided in pipe of wall thickness 3 mm for leftward welding technique?

1.5-2.5 mm 2.5-3.0 mm 3.0-4.0 mm 4.0-5.0 mm

Correct Answer: 2.5-3.0 mm

5) What are the weld positions for pipes by gas welding?

1G, 2G and 5G 1G, 2G and 6G 1G, 2G and 3G 1G, 2G and 4G

Correct Answer: 1G, 2G and 5G

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