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Workshop Technology

Workshop Technology
In average work, the tolerance produced by investment casting method is

+05 mm
+0.2 mm
±0.05 mm
+1 mm

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Workshop Technology
The cold working of metals is carried out

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

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Workshop Technology
For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should be approximately

42 mm
48 mm
44 mm
46 mm

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Workshop Technology
The instrument used to measure external and internal diameter of shafts, thickness of parts and depth of holes, is

Depth gauge micrometer
Outside micrometer
Inside micrometer
Vernier caliper

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Workshop Technology
The directional solidification in casting can be improved by using

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

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Workshop Technology
In welding copper alloys with TIG arc welding

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

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