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Workshop Technology

Workshop Technology
Which one of the following material will require the largest size of riser for the same size of casting?

Aluminium
Cast iron
Copper
Steel

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Workshop Technology
When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as

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

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Workshop Technology
In submerged arc welding, an arc is produced between a

Bare metal electrode and the work
Carbon electrode and the work
Metal electrode and the work
Two tungsten electrodes and the work

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Workshop Technology
A pattern maker's shrinkage rule considers

All pattern allowances
All materials to be cast
All materials of the pattern
Only shrinkage allowance

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Workshop Technology
In a centrifugal casting method

Core is made of sand
No core is used
Core is made of nonferrous metal
Core is made of ferrous metal

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Workshop Technology
When the dimension is expressed as, then the tolerance is

0.035 mm
0.06 mm
0.025 mm
0.01 mm

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