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Workshop Technology

Workshop Technology
The electrode tip diameter (d) in spot welding should be equal to (where t = Thickness of plate to be welded)

6 t
√t
1.5 t
3 t

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Workshop Technology
When a hole or cavity to be cored is not in line with the parting surface, then a ________ is used.

Horizontal core
Drop core
Vertical core
Balanced core

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Workshop Technology
A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as

Shift
Swell
Sand wash
Scab

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Workshop Technology
The current in electric resistance welding can be regulated by

Any one of the listed here
Changing the secondary turns of the transformer
Varying the input supply
Changing the primary turns of the transformer

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Workshop Technology
The process of decreasing the cross-section of a bar and increasing its length, is called

Spinning
Drawing down
Upsetting
Peening

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Workshop Technology
In forehand welding, the angle between the welding rod and the work is kept as

30°-40°
60°-70°
40°-50°
50°-60°

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