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Workshop Technology

Workshop Technology
The temperature of oxy-hydrogen flame is ________ oxyacetylene flame.

None of these
More than
Same as
Less than

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Workshop Technology
For welding plates of thickness less than 5 mm, its edges

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

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Workshop Technology
In a four high rolling mill, the diameter of backing up rolls is ________ the diameter of working rolls.

Equal to
Smaller than
None of these
Larger than

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Workshop Technology
The hot working of metals is carried out

At any temperature
Above the recrystallisation temperature
Below the recrystallisation temperature
At the recrystallisation temperature

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Workshop Technology
In welding copper alloys with TIG arc welding

Any one of the listed here
Direct current with straight polarity is used
Direct current with reversed polarity is used
Alternating current is used

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Workshop Technology
In shielded arc welding

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

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