Top 250+ Solved Metallurgy MCQ Questions Answer

a. Channels

b. Die blocks

c. Hammers

d. Solid drawn tubes

e. Angle iron

a. Melting point

b. Tensile strength

c. Fluidity

d. Machinability

e. Rapid heating

a. 0.2 percent selenium is added

b. 0.35 percent sulphur is added

c. 0.5 percent manganese is added

d. (A) and (B) above

e. (B) or (C) above

a. metre second

b. Presence of cementite

c. metre2 second-1

d. metre second-1

e. metre-2 second-1

a. Filling the stem with nitrogen under pressure

b. Increasing tube diameter

c. Taking into account expansion of tube

d. Range cannot be increased

e. Providing steel tube

a. Size of specimen

b. Hardenability of steel

c. Quenching medium

d. All of the above

e. Low specific heat of quenching oil

a. 7A

b. 170 A

c. 70 A

d. 0.7 A

e. 0.07 A

a. using a more effective cooling medium

b. protecting against decarburization in heating

c. obtaining a more homogeneous structure employing annealing or normalising before hardening

d. Any of the above

e. Low specific heat of quenching oil

a. T 55 Ni Cr 65 Mo 30

b. T 75 W 18 Co 6 Cr 4

c. T 10 Cr 5 Mo 75 V 23

d. T 75 W 18 Co 6 Cr 4 V 1 Mo 75

e. None of the above

a. 95%

b. 80%

c. 90%

d. 99.90%

e. 78%

a. Endurance failure

b. Proof deformation

c. Creep

d. Gradual deformation

e. Fatigue

a. FeC3

b. Fe2C3

c. FeC

d. Fe3C2

e. Fe3C

a. Low specific heat of quenching oil

b. Tempering

c. Softness

d. Toughness

e. Hardness

a. tempering temperature too low

b. tempering temperature too high

c. oxidising atmosphere in the furnace

d. Any of the above

e. Low specific heat of quenching oil

a. Molybdenum

b. Cadmium

c. Chromium

d. Lead

e. Aluminium