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Workshop Technology

Workshop Technology
Lap joints are employed on plates having thickness

12.5 mm
5 to 10 mm
Less than 3 mm
Above 25 mm

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Workshop Technology
Thread rolling is restricted to

Ductile materials
Hard materials
Ferrous materials
None of these

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Workshop Technology
Which of the following welding method uses a pool of molten metal?

Submerged arc welding
Carbon arc welding
MIG arc welding
TIG arc welding

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Workshop Technology
In welding copper alloys with TIG arc welding

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

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Workshop Technology
The material which can be best cut with oxygen cutting process is

Copper
Mild steel
Brass
Aluminium

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Workshop Technology
Tandem drawing of wires and tubes is necessary because

Annealing is needed between stages
It is not possible to reduce at one stage
Surface finish improves after every drawing stage
Accuracy in dimensions is not possible otherwise

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