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Workshop Technology

Workshop Technology
Most of the oxyacetylene welding is done with

Oxidizing flame
Carburising flame
All of these
Neutral flame

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Workshop Technology
In electric resistance welding, voltage required for heating is

1 to 5 volts
50 to 100 volts
11 to 20 volts
6 to 10 volts

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Workshop Technology
The parts of circular cross-section which are symmetrical about the axis of rotation are made by

Hot forging
Hot spinning
Hot extrusion
Hot drawing

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Workshop Technology
The material which can be best cut with oxygen cutting process is

Brass
Mild steel
Copper
Aluminium

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Workshop Technology
The sand used for making cores is

Dry sand
Green sand
Loam sand
Oil sand

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Workshop Technology
A two high rolling mill consists of two rolls which rotate

At different speeds and in the same direction
At the same speed and in the same direction
At different speeds and in the opposite direction
At the same speed but in opposite direction

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