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Workshop Technology

Workshop Technology
Cold working of metal increases

Hardness
Tensile strength
Yield strength
All of these

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Workshop Technology
If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be

10 mm/m
16 mm/m
26 mm/m
20 mm/m

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Workshop Technology
In arc welding, the electric arc is produced between the work and the electrode by

All of these
Flow of current
Contact resistance
Voltage

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Workshop Technology
A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as

Swell
Shift
Scab
Sand wash

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Workshop Technology
The binder commonly used in making oil sand, is

Any one of the listed here
Organic type binder
Inorganic type binder
Clay type binder

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Workshop Technology
The temperature produced by oxy-hydrogen flame is about

2400°C
1800°C
3200°C
2100°C

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