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Workshop Technology

Workshop Technology
The increase in hardness due to cold working, is called

Work hardening
Flame hardening
Induction hardening
Age hardening

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

Yellow colour
Blue colour
Red colour
Black colour

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

2100°C
1800°C
3200°C
2400°C

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Workshop Technology
The current in electric resistance welding can be regulated by

Changing the primary turns of the transformer
Changing the secondary turns of the transformer
Varying the input supply
Any one of the listed here

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Workshop Technology
A mortise gauge is a

Boring tool
Marking tool
Planing tool
Striking tool

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Workshop Technology
The sand used for making cores is

Dry sand
Oil sand
Loam sand
Green sand

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