WELDABILITY OF STEEL - Practice Mode

1) Which gauging nozzle is selected for rivet head cutting?

Bent nozzle with three pre-heating holes Straight nozzle with six pre-heating holes Bent nozzle with six holes Flute cutting straight with six holes

Correct Answer: Bent nozzle with three pre-heating holes

2) What benefit we get out of a carburising flame?

Suitable for brass, copper welding Suitable for stellite, flame cleaning Suitable for mildsteel, stainless steel Suitable for pure aluminium, cast iron & brass welding

Correct Answer: Suitable for stellite, flame cleaning

3) What are the defects in generated acetylene gas?

Oxygen, hydrogen & carbon Carbon monoxide unburit ash Hydrogen, dust particles, ash Hydrogen, lime dust, ammonia & water vapour

Correct Answer: Hydrogen, lime dust, ammonia & water vapour

4) What is the range of pressure used in an oxygen cylinder used in gas welding?

120 to 150 Kg/cm2 110 to 150 Kg/cm2 100 to 150 Kg/cm2 90 to 150 Kg/cm2

Correct Answer: 120 to 150 Kg/cm2

5) What should be the angle of filler rod, by rightward welding?

30 Degree - 40 Degree 40 Degree - 50 Degree 50 Degree - 60 Degree 60 Degree - 70 Degree

Correct Answer: 30 Degree - 40 Degree

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