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Workshop Technology

Workshop Technology
A casting defect which results in general enlargement of a casting is known as

Sand wash
Swell
Scab
Shift

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Workshop Technology
When filing soft metals, the file teeth are clogged with minute particles of metal. The file should be cleaned by

Washing it with water
Rubbing on wood
Using file card
Washing it with dilute acid

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Workshop Technology
The oxyacetylene gas used in gas welding produce a flame temperature of

2400°C
2100°C
3200°C
1800°C

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Workshop Technology
The blank diameter used in thread rolling will be

A little larger than the pitch diameter of the thread
A little larger than the minor diameter of the thread
Equal to minor diameter of the thread
Equal to pitch diameter of the thread

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Workshop Technology
The metal is subjected to mechanical working for

Reducing original block into desired shape
Refining grain size
All of these
Controlling the direction of flow lines

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

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

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