Ferrite and pearlite
Cementite and pearlite
Ferrite and bainite
Cementite and martensi
✅ The correct answer is option B.
Engineering Materials MCQs
2. The metal suitable for bearings subjected to heavy loads, is
silicon bronze
white metal
monel metal
phosphor bronze
✅ The correct answer is option B.
3. Hardness of steel is increased by adding sulphur, lead and phosphorus.
Yes
No
✅ The correct answer is option B.
4. Age hardening is related to
duralumin
brass
copper
silver
✅ The correct answer is option A.
5. Normalising of steel is done to
refine the grain structure
remove strains caused by cold working
remove dislocations caused in the internal structuure due to hot working
all of the above
✅ The correct answer is option D.
6. Which of the following gives the correct order of increasing hot hardness of cutting tool materials?
Diamond, Carbide, High speed steel
Carbide, Diamond, High speed steel
High speed steel, Carbide, Diamond
High speed steel, Diam
✅ The correct answer is option C.
7. The machine tool guide ways are usually hardened by
vacuum hardening
martempering
induction hardening
flame hardening
✅ The correct answer is option D.
8. In low carbon steels, presence of small quantities of sulphur improves
weldability
formability
machinability
hardenability
✅ The correct answer is option C.
9. Which of the following statements are true for annealing of steels?
Steels are heated to 500 to 700° C
Cooling is done slowly and steadily
Internal stresses are relieved
all of these
✅ The correct answer is option D.
10. Hindalium is an alloy of aluminium and magnesium with a small quantity of chromium.
Agree
Disagree
✅ The correct answer is option A.