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Workshop Technology

Workshop Technology
The electron beam welding can be carried out in

Open air
A shielded gas environment
Vacuum
A pressurized inert gas chamber

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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
Die casting method
Centrifugal casting method

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Workshop Technology
the most preferred process for casting gas turbine blades is

Investment moulding
Sand casting
Shell moulding
Die casting

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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

15 litres
10 litres
20 litres
5 litres

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Workshop Technology
In arc welding, the electric arc is produced between the work and the electrode by

Contact resistance
Flow of current
Voltage
All of these

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Workshop Technology
The electrodes used in spot welding have a tip of

Brass
Stainless steel
Copper
Aluminium

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