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Workshop Technology

Workshop Technology
The electrodes used in spot welding have a tip of

Copper
Stainless steel
Brass
Aluminium

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Workshop Technology
In a four high rolling mill, the diameter of backing up rolls is ________ the diameter of working rolls.

Larger than
Equal to
None of these
Smaller than

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Workshop Technology
The metal extrusion process is generally used for producing

Varying solid and hollow sections
Uniform solid and hollow sections
Uniform solid sections
Uniform hollow sections

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Workshop Technology
Seam welding is best adopted for metal thickness ranging from

0.025 to 3 mm
5 to 8 mm
3 to 5 mm
8 to 10 mm

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

1.5 t
√t
3 t
6 t

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Workshop Technology
The centrifugal casting method, is used for casting articles of

Irregular shape
Symmetrical shape about vertical axis
Symmetrical shape about horizontal axis
Nonferrous metal only

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