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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 forging
Hot extrusion

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Workshop Technology
Green sand is a mixture of

50% sand and 50% clay
90% sand and 10% clay
70% sand and 30% clay
30% sand and 70% clay

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Workshop Technology
Thread rolling is restricted to

Hard materials
None of these
Ductile materials
Ferrous materials

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Workshop Technology
A file removes the metal during

Both forward and return strokes
Forward stroke
Return stroke
None of these

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Workshop Technology
In average work, the tolerance produced by investment casting method is

+05 mm
+1 mm
±0.05 mm
+0.2 mm

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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

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

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