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Workshop Technology

Workshop Technology
The cold chisels are made from

Cast iron
Cast tool steel
High speed steel
Mild steel

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Workshop Technology
In sheet metal blanking, shear is provided on punches and dies so that

Warping of sheet is minimized
Cut blanks is straight
Good cut edge is obtained
Press load is reduced

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Workshop Technology
The operation of cutting of a flat sheet to the desired shape is called

Piercing
Punching
Blanking
Shearing

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Workshop Technology
Scribing block is used to

Locate the centres of round bars
Check the trueness of flat surfaces
Hold the round bars during marking
Check the surface roughness

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Workshop Technology
In forehand welding, the angle between the welding rod and the work is kept as

40°-50°
60°-70°
50°-60°
30°-40°

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

Shift
Sand wash
Scab
Swell

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