Explore topic-wise MCQs in Mechanical Metallurgy.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Metallurgy knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following factors change the value of the elastic constant of any material?

A. Heat treatment
B. Vacancy
C. Temperature
D. Dislocation
Answer» D. Dislocation
Discussion
2.

The elastic constant of a material is determined by the ________________ of potential energy vs interatomic distance curve.

A. slope
B. curvature
C. x-intercept
D. minimum
Answer» C. x-intercept
Discussion
3.

The variation of interatomic energy with atomic distance is given by the following equation V(r)=4 [( /r12) ( /r6)] Where V(r) is the potential energy, and r is interatomic distance. and are constant.
Find the value of energy at the point where the interatomic force is zero?

A.
B.
C. 0
D.
Answer» B.
Discussion
4.

Elastic constant of crystal does not vary with the orientation of the crystal.

A. True
B. False
Answer» C.
Discussion
5.

If the interatomic distance between 2 atoms is changed from the equilibrium position, then the nature of force will be _____________ when interatomic distance is decreased from equilibrium; and the nature of force will be _____________ when interatomic distance is increased.

A. attractive, repulsive
B. repulsive, attractive
C. attractive, attractive
D. repulsive, repulsive
Answer» C. attractive, attractive
Discussion
6.

In the universal testing machine for tension test, the output raw data are in the form of ________

A. Load vs. Elongation
B. Engineering stress vs. Engineering Strain
C. True Stress vs. True strain
D. Torque vs. Angle
Answer» B. Engineering stress vs. Engineering Strain
Discussion
7.

Elastic strain energy per unit volume or strain energy density is NOT equal to ________
Where x=stress in x direction, x=strain in x direction, E=young s modulus, P=load, =elongation.

A. ( frac{1}{2}( sigma x epsilon x) )
B. ( frac{1}{E}( sigma x^2) )
C. ( frac{1}{2}(E epsilon x^2) )
D. ( frac{1}{2}(p Delta) )
Answer» E.
Discussion
8.

The elastic strain energy is equal to the area under the stress-strain curve up (from origin to the elastic limit).

A. True
B. False
Answer» C.
Discussion