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Workshop Technology

Workshop Technology
The increase in hardness due to cold working, is called

Age hardening
Work hardening
Flame hardening
Induction hardening

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Workshop Technology
Cold working of metal increases

Hardness
Tensile strength
All of these
Yield strength

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Workshop Technology
If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be

20 mm/m
10 mm/m
26 mm/m
16 mm/m

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Workshop Technology
The advantage of Thermit welding is that

All of these
All parts of the weld section are molten at the same time
Results in a minimum problem with internal residual stresses
Weld cools almost uniformly

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Workshop Technology
When a pattern is made in three parts, the ________ is known as a drag.

Middle part
None of these
Bottom part
Top part

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

Sherardizing
Galvanizing
Parkerising
Anodizing

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