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Workshop Technology

Workshop Technology
Which one of the following material will require the largest size of riser for the same size of casting?

Copper
Aluminium
Cast iron
Steel

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Workshop Technology
Acetylene gas is stored in cylinders in

Gaseous form
Any one of the listed here
Solid form
Liquid form

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Workshop Technology
In submerged arc welding, an arc is produced between a

Two tungsten electrodes and the work
Carbon electrode and the work
Metal electrode and the work
Bare metal electrode and the work

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Workshop Technology
In electric resistance welding, pressure applied varies from

10 to 25 MPa
1 to 5 MPa
25 to 55 MPa
5 to 10 MPa

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Workshop Technology
In order to get uniform thickness of the plate by rolling process, one provides

Hardening of the rolls
Antifriction bearings
Offset on the rolls
Camber on the rolls

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Workshop Technology
Green sand is a mixture of

30% sand and 70% clay
70% sand and 30% clay
50% sand and 50% clay
90% sand and 10% clay

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