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Workshop Technology

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

All of these
Flow of current
Voltage
Contact resistance

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Workshop Technology
The welding process used in joining mild steel shanks to high speed drills, is

Seam welding
Upset butt welding
Flash butt welding
Spot welding

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Workshop Technology
In backhand welding, the angle between the welding torch and the work is kept as

50°-60°
60°-70°
40°-50°
30°-40°

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Workshop Technology
In electric resistance welding, voltage required for heating is

50 to 100 volts
1 to 5 volts
11 to 20 volts
6 to 10 volts

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Workshop Technology
The metal is subjected to mechanical working for

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

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

Yellow colour
Red colour
Black colour
Blue colour

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