Engineering Materials Online Quiz


1. In normalizing process, the hypereutectoid steel is heated from 30° C to 50° C above the upper critical temperature and then cooled in still air.
True
False

2. An eutectoid steel consists of
Wholly pearlite
Wholly austenite

3. Cast iron is used in those parts which are subjected to shocks.
Correct
Incorrect

4. The upper critical point varies according to the carbon content in steel.
True
False

5. The acidic Bessemer process is suitable for producing steel from pig iron containing large quantities of phosphorus.
Correct
Incorrect

6. Phosphorus is added in low carbon steels to raise its yield point.
True
False

7. Pearlite is a combination of 87% ferrite and 13% cementite.
Yes
No

8. The aluminium alloy, mainly used, for anodized utensil manufacture, is
Duralumin
Hindalium

9. The alloy, mainly used for corrosion resistance in stainless steels is
Silicon
Chromium

10. Corrosion resistance of steel is increased by adding nickel and chromium.
Agree
Disagree

11. An aluminium alloy with 11% silicon is used for making engine pistons by die casting technique.
Yes
No

12. The toughness of a material _________ when it is heated.
Increases
Decreases

13. Grey cast iron is ________ than white cast iron.
Softer
Harder

14. The stiffness is the ability of a material to resist deformation under stress.
True
False

15. In a unit cell of close packed hexagonal space lattice, there are twenty four atoms.
Correct
Incorrect

16. The steel scrap added in the charge of cupola controls the grade of cast iron produced.
Correct
Incorrect

17. Iron-carbon alloys containing carbon ________ 4.3% are known as hyper-eutectic cast irons.
Less than
More than

18. Brass (alloy of copper and zinc) is an example of
Substitutional solid solution
Interstitial solid solution

19. The compressive strength of cast iron is ________ that of its tensile strength.
Less than
More than

20. Dislocations in materials refer to the following type of defect
Point defect
Line defect

     Score =

Correct answers:

Share on Google Plus

    FB Comments
    Comments

0 comments:

Post a Comment