Mechanical Engineering - Workshop Technology

26. 

The operation of giving impressions of figures, letters or designs on sheet metal parts, is known as embossing.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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27. 

In a gas welding of mild steel using an oxy-acetylene flame, the total amount of acetylene consumed is 10 litre. The oxygen consumption from the cylinder is

A. 5 litre
B. 10 litre
C. 15 litre
D. 20 litre

Answer: Option B

Explanation:

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28. 

The sand used for making cores is

A. green sand
B. dry sand
C. loam sand
D. oil sand

Answer: Option D

Explanation:

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29. 

Sand wash is a casting defect which

A. results in a mismatching of the top and bottom parts of a casting
B. results in general enlargement of the casting
C. occurs near the ingates as rough lumps on the surface of a casting
D. occurs as sand patches on the upper surface of a casting

Answer: Option C

Explanation:

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30. 

Cold working distorts grain structure and does not provide an appreciable reduction in size.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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