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Workshop Technology

Workshop Technology
The recrystallisation temperature of steel is

400°C
600°C
None of these
800°C

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Workshop Technology
When a hole or cavity to be cored is not in line with the parting surface, then a ________ is used.

Horizontal core
Vertical core
Balanced core
Drop core

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Workshop Technology
Thread rolling is restricted to

Ferrous materials
Hard materials
None of these
Ductile materials

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Workshop Technology
The metal is subjected to mechanical working for

All of these
Reducing original block into desired shape
Controlling the direction of flow lines
Refining grain size

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Workshop Technology
Structural sections such as rails, angles, I-beams are made by

Hot drawing
Hot extrusion
Hot rolling
Hot piercing

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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)

1.5 t
6 t
√t
3 t

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