In permanent mould casting method

Workshop Technology
In permanent mould casting method

None of these

Molten metal is poured in a metallic mould, retained in the mould long enough for the outer skin to solidify and finally mould is turned over to remove molten metal still in molten condition

Molten metal is poured and allowed to solidify while the mould is revolving

Molten metal is forced into mould under high pressure

None of these

Molten metal is poured in a metallic mould, retained in the mould long enough for the outer skin to solidify and finally mould is turned over to remove molten metal still in molten condition

Molten metal is poured and allowed to solidify while the mould is revolving

Molten metal is forced into mould under high pressure

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Workshop Technology
The shrinkage allowance for cast iron pattern is

16 mm/m

20 mm/m

26 mm/m

10 mm/m

16 mm/m

20 mm/m

26 mm/m

10 mm/m

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Workshop Technology
The adhesiveness is the property of sand due to which

It clings to the sides of a moulding box

The sand grains stick together

It evolves a great amount of steam and other gases

None of these

It clings to the sides of a moulding box

The sand grains stick together

It evolves a great amount of steam and other gases

None of these

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Workshop Technology
In piercing operation, the clearance is provided on

Punch

Half on the punch and half on the die

Die

Either on punch or die depending upon designer's choice

Punch

Half on the punch and half on the die

Die

Either on punch or die depending upon designer's choice

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Workshop Technology
If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be

20 mm/m

10 mm/m

16 mm/m

26 mm/m

20 mm/m

10 mm/m

16 mm/m

26 mm/m

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Workshop Technology
During hot working of metals

Grain structure of the metal is refined

Mechanical properties are improved due to refinement of grains

Porosity of the metal is largely eliminated

All of the listed here

Grain structure of the metal is refined

Mechanical properties are improved due to refinement of grains

Porosity of the metal is largely eliminated

All of the listed here

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Workshop Technology

Workshop Technology In permanent mould casting method

Workshop Technology The shrinkage allowance for cast iron pattern is

Workshop Technology The adhesiveness is the property of sand due to which

Workshop Technology In piercing operation, the clearance is provided on

Workshop Technology If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be

Workshop Technology During hot working of metals

Workshop Technology
In permanent mould casting method

Workshop Technology
The shrinkage allowance for cast iron pattern is

Workshop Technology
The adhesiveness is the property of sand due to which

Workshop Technology
In piercing operation, the clearance is provided on

Workshop Technology
If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be

Workshop Technology
During hot working of metals