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Workshop Technology

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

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

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Workshop Technology
Green sand is a mixture of

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

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Workshop Technology
The minimum size of a bloom is

15 cm × 15 cm
20 cm × 20 cm
10 cm × 10 cm
5 cm × 5 cm

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Workshop Technology
A hacksaw blade cuts on the

Both forward and return strokes
Forward stroke
Cutting depends upon the direction of force
Return stroke

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

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

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Workshop Technology
In forehand welding, the angle between the welding rod and the work is kept as

60°-70°
40°-50°
50°-60°
30°-40°

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