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Workshop Technology

Workshop Technology
The operation of cutting a cylindrical hole in a sheet of metal by the punch and die is called

Piercing
Shearing
Blanking
Punching

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Workshop Technology
The cross-section of a chisel is usually

Octagonal
Rectangular
Hexagonal
Square

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Workshop Technology
The cold chisels are made from

High speed steel
Cast iron
Mild steel
Cast tool steel

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Workshop Technology
When filing soft metals, the file teeth are clogged with minute particles of metal. The file should be cleaned by

Rubbing on wood
Washing it with dilute acid
Using file card
Washing it with water

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Workshop Technology
For welding plates of thickness less than 5 mm, its edges

Do not require bevelling
Should have a double-V or U-groove on one side
Should be bevelled to a single-V or U-groove
Should have a double-V or U-groove on both sides

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

Blue colour
Red colour
Black colour
Yellow colour

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