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Workshop Technology

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

Hot spinning
Hot drawing
Hot extrusion
Hot forging

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Workshop Technology
In piercing operation, the clearance is provided on

Die
Punch
Either on punch or die depending upon designer's choice
Half on the punch and half on the die

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Workshop Technology
When filing soft metals, the file teeth are clogged with minute particles of metal. The file should be cleaned by

Using file card
Washing it with dilute acid
Washing it with water
Rubbing on wood

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Workshop Technology
The centrifugal casting method, is used for casting articles of

Irregular shape
Nonferrous metal only
Symmetrical shape about vertical axis
Symmetrical shape about horizontal axis

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Workshop Technology
In a bilateral system of tolerance, the tolerance is allowed on

Both sides of the nominal size
One side of the actual size
One side of the nominal size
Both sides of the actual size

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Workshop Technology
For gas welding, the pressure desired at the welding torch for acetylene is

7 to 103 kN/m²
280 to 560 kN/m²
70 to 280 kN/m²
560 to 840 kN/m²

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