Mechanical Engineering - Engineering Materials

26. 

Brittle materials when subjected to tensile loads, snap off without giving any sensible elongation.

A. Yes
B. No

Answer: Option A

Explanation:

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27. 

The property of a material necessary for forgings, in stamping images on coins and in ornamental work, is

A. elasticity
B. plasticity
C. ductility
D. malleability

Answer: Option B

Explanation:

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28. 

The portion of the blast furnace above its widest cross-section is called

A. hearth
B. stack
C. bosh
D. throat

Answer: Option B

Explanation:

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29. 

The phosphorus and sulphur in steel making can be removed by using basic bessemer process.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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30. 

The heat treatment process used for castings is

A. carburising
B. normalising
C. annealing
D. tempering

Answer: Option B

Explanation:

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