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Workshop Technology

Workshop Technology
The electron beam welding can be carried out in

Open air
A pressurized inert gas chamber
Vacuum
A shielded gas environment

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Workshop Technology
In backhand welding, the angle between the welding rod and the work is ___ as compared to forehand welding.

None of the listed here
Same
Less
More

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Workshop Technology
In shielded arc welding

None of the listed here
Welding rod coated with fluxing material is used
Welding rod coated with slag is used
Large electrode is used

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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 directional solidification in casting can be improved by using

Chills and padding
Chaplets and padding
Chills and chaplets
Chills, chaplets and padding

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Workshop Technology
For welding plates of thickness more than 12.5 mm, its edges

Should have a double-V or U-groove on one side
Should be bevelled to a single-V or U-groove
Do not require bevelling
Should have a double-V or U-groove on both sides

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