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Workshop Technology

Workshop Technology
The draft or taper allowance on casting is generally

5 to 10 mm/m
1 to 2 mm/m
2 to 5 mm/m
10 to 15 mm/m

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Workshop Technology
The minimum size of a bloom is

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

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Workshop Technology
According to Indian standards, the total numbers of tolerance grades are

20
12
18
8

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Workshop Technology
The edge of a steel plate cut by oxygen cutting will get hardened when the carbon content is

Anywhere between 0.1 to 1 percent
Less than 0.3 percent
More than 0.3 percent
Less than 0.1 percent

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Workshop Technology
In a centrifugal casting method

No core is used
Core is made of sand
Core is made of ferrous metal
Core is made of nonferrous metal

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Workshop Technology
A casting defect which occurs due to improper venting of sand is known as

Blow holes
Shift
Cold shuts
Swell

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