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Workshop Technology

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

Induction hardening
Age hardening
Work hardening
Flame hardening

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Workshop Technology
In order to deliver molten metal from pouring basin to gate, a ________ is used.

Core
None of these
Riser
Sprue

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

3200°C
1800°C
2100°C
2400°C

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Workshop Technology
The blank diameter used in thread rolling will be

Equal to pitch diameter of the thread
A little larger than the pitch diameter of the thread
A little larger than the minor diameter of the thread
Equal to minor diameter of the thread

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Workshop Technology
Blanking and piercing operations can be performed simultaneously in a

Compound die
Progressive die
Combination die
Simple die

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

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

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