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Workshop Technology

Workshop Technology
In electric resistance welding, voltage required for heating is

11 to 20 volts
6 to 10 volts
1 to 5 volts
50 to 100 volts

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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

48 mm
44 mm
46 mm
42 mm

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Workshop Technology
The welding process used to join the ends of two pipes of uniform cross-section, is

Upset butt welding
Spot welding
Seam welding
Projection welding

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Workshop Technology
In welding magnesium with TIG arc welding, direct current with ________ is used.

Straight polarity
Reversed polarity
None of these
Both (A) and (B)

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Workshop Technology
Thread rolling is restricted to

None of these
Hard materials
Ductile materials
Ferrous materials

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Workshop Technology
The maximum flame temperature occurs

Between the outer and inner cone
At the outer cone
At the torch tip
At the inner cone

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