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Workshop Technology

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

Hot extrusion
Hot drawing
Hot rolling
Hot piercing

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

Cast iron
Steel
Aluminium
Copper

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Workshop Technology
Cutting and forming operations can be performed in a single operation in a

Combination die
Progressive die
Compound die
Simple die

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Workshop Technology
The current in electric resistance welding can be regulated by

Changing the secondary turns of the transformer
Varying the input supply
Any one of the listed here
Changing the primary turns of the transformer

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Workshop Technology
Most of the oxyacetylene welding is done with

Neutral flame
Oxidizing flame
All of these
Carburising flame

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Workshop Technology
The oxyacetylene gas used in gas welding produce a flame temperature of

2100°C
1800°C
2400°C
3200°C

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