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Workshop Technology

Workshop Technology
In order to deliver molten metal from pouring basin to gate, a ________ is used.

Sprue
Core
Riser
None of these

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Workshop Technology
In welding copper alloys with TIG arc welding

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

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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)

3 t
6 t
1.5 t
√t

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Workshop Technology
In arc welding, the electric arc is produced between the work and the electrode by

Voltage
Flow of current
Contact resistance
All of these

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Workshop Technology
The material which can be best cut with oxygen cutting process is

Copper
Mild steel
Aluminium
Brass

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Workshop Technology
When a pattern is made in three parts, the ________ is known as a drag.

None of these
Bottom part
Middle part
Top part

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