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Workshop Technology

Workshop Technology
The operation of producing cup shaped parts from flat sheet metal blanks by bending and plastic flow of metal, is known as

Coining
Drawing
Squeezing
Planishing

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Workshop Technology
In welding copper alloys with TIG arc welding

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

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Workshop Technology
The tolerance produced by shell moulding process of casting is

±0.2 mm
+0.5 mm
±1 mm
+0.05 mm

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Workshop Technology
The advantage of Thermit welding is that

All parts of the weld section are molten at the same time
Results in a minimum problem with internal residual stresses
All of these
Weld cools almost uniformly

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Workshop Technology
The hot working of metals is carried out

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

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Workshop Technology
A hacksaw blade is specified by its

Length
Number of teeth
Width
Material

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