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Workshop Technology

Workshop Technology
Cold working of metal increases

Tensile strength
Hardness
All of these
Yield strength

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Workshop Technology
Cores are used to

Form internal cavities in the casting
Improve mould surface
Form a part of a green sand mould
All of these

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Workshop Technology
The maximum flame temperature occurs

At the inner cone
Between the outer and inner cone
At the outer cone
At the torch tip

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Workshop Technology
In a gas welding of mild steel using an oxyacetylene flame, the total amount of acetylene consumed is 10 litres. The oxygen consumption from the cylinder is

20 litres
15 litres
5 litres
10 litres

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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
In a ___, the molten metal is poured and allowed to solidify while the mould is revolving.

Permanent mould casting method
Slush casting method
Centrifugal casting method
Die casting method

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