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Workshop Technology

Workshop Technology
A sand employed on the faces of the pattern before moulding, is called

Parting sand
Green sand
Dry sand
Loam sand

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Workshop Technology
A ring gauge is used to

Test the accuracy of holes
Check the diameter of shafts or studs
Check the clearance between two mating surfaces
All of these

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Workshop Technology
For gas welding, the pressure desired at the welding torch for oxygen 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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Workshop Technology
The tolerance produced by shell moulding process of casting is

+0.05 mm
±1 mm
+0.5 mm
±0.2 mm

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Workshop Technology
The surface to be left unmachined is marked on the pattern by

Yellow colour
Black colour
Red colour
Blue colour

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Workshop Technology
In piercing operation, the clearance is provided on

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

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