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WORKSHOP TECHNOLOGY

Workshop Technology
For gas welding, the pressure desired at the welding torch for oxygen is

70 to 280 kN/m²
280 to 560 kN/m²
7 to 103 kN/m²
560 to 840 kN/m²

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Workshop Technology
Aluminium is the best material for making patterns because it is

Light in weight
All of the listed here
Easy to work
Corrosion resistant

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Workshop Technology
An oxidising process used for aluminium and magnesium articles is called

Parkerising
Anodizing
Galvanizing
Sherardizing

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Workshop Technology
Cast iron and steel pipes are produced by

Die casting
Investment casting
True centrifugal casting
Slush casting

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Workshop Technology
In arc welding, the temperature of heat produced by the electric arc is of the order of

6000°C to 7000°C
4000°C to 5000°C
5000°C to 6000°C
3000°C to 4000°C

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