Mechanical Engineering Multiple Choice Questions

Engineering Materials

5 Objective Type Questions

1) Ductility of a material can be defined as
     (a) ability to undergo large permanent deformations in
     compression
     (b) ability to recover its original form
     (c) ability to undergo large permanent deformations in tension
     (d) all of the above
     (e) none of the above.
     Ans: c

2. Malleability of a material can be defined as
     (a) ability to undergo large permanent deformations in
     compression
     (b) ability to recover its original form
     (c) ability to undergo large permanent deformations in tension
     (d) all of the above
     (e) none of the above.
     Ans: a

3. In compression, a prism of brittle material will break
     (a) by forming a bulge (l>) by shearing along oblique plane
     (c) in direction perpendicular to application of load
     (d) by crushing into thousands of pieces
     (e) none of the above.
     Ans: b

4. The ability of a material to resist softening at high
temperature is known as
     (a) creep
     (b) hot tempering
     (c) hot hardness
     (d) fatigue
     (e) super hardening.
     Ans: c

5. Mild steel belongs to the following category
     (a) low carbon steel
     (b) medium carbon steel
     (c) high carbon steel
     (d) alloy steel
     (e) special steel.
     Ans: a

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