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Workshop Technology

Workshop Technology
Structural sections such as rails, angles, I-beams are made by

Hot piercing
Hot rolling
Hot extrusion
Hot drawing

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Workshop Technology
Projection welding is a

Process used for joining round bars
Multi-spot welding process
Continuous spot welding process
Arc welding process

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Workshop Technology
The property of sand due to which the sand grains stick together is called

Permeability
Adhesiveness
Collapsibility
Cohesiveness

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Workshop Technology
A pattern maker's shrinkage rule considers

All pattern allowances
All materials to be cast
Only shrinkage allowance
All materials of the pattern

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

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

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Workshop Technology
The surface to be left unmachined is marked on the pattern by

Black colour
Blue colour
Yellow colour
Red colour

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