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Workshop Technology

Workshop Technology
Cold working of metal increases

Tensile strength
All of these
Hardness
Yield strength

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Workshop Technology
Cast iron and steel pipes are produced by

Slush casting
Die casting
Investment casting
True centrifugal casting

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Workshop Technology
The advantage of Thermit welding is that

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
All of these

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Workshop Technology
A moving mandrel is used in

Tube drawing
Forging
Wire drawing
Metal cutting

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

Shearing
Piercing
Blanking
Punching

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Workshop Technology
In welding magnesium with TIG arc welding, direct current with ________ is used.

Straight polarity
Both (A) and (B)
Reversed polarity
None of these

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