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Workshop Technology

Workshop Technology
The surface to be left unmachined is marked on the pattern by

Blue colour
Black colour
Yellow colour
Red colour

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Workshop Technology
The recrystallisation temperature of steel is

400°C
None of these
600°C
800°C

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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
Two tungsten electrodes and the work
Carbon electrode and the work

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Workshop Technology
The temperature of the inner luminous cone of neutral flame is about

1000°C
3200°C
2100°C
1250°C

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Workshop Technology
The chisel used for cutting key ways is

Diamond pointed chisel
Round nose chisel
Flat chisel
Cape chisel

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Workshop Technology
Metal patterns are used for

Large castings
Small castings
Large scale production of castings
Complicated castings

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