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Workshop Technology

Workshop Technology
A casting defect which results in general enlargement of a casting is known as

Scab
Shift
Swell
Sand wash

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

Work hardening
Induction hardening
Age hardening
Flame hardening

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Workshop Technology
During drawing operation, the states of stress in cup would include

Tensile stress in the wall
None of these
Both (A) and (B)
Compressive stress in the flange

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Workshop Technology
The edge of a steel plate cut by oxygen cutting will get hardened when the carbon content is

Less than 0.3 percent
Anywhere between 0.1 to 1 percent
Less than 0.1 percent
More than 0.3 percent

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Workshop Technology
The electrode tip diameter (d) in spot welding should be equal to (where t = Thickness of plate to be welded)

√t
6 t
1.5 t
3 t

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

Red colour
Yellow colour
Black colour
Blue colour

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