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Mechanical Metallurgy Mock Test 5


Correct Answer: 2 points | Wrong: -1 point
Grades: A* (100% score) | A (80%-99%) | B (60%-80%) | C (40%-60%) | D (0%-40%)
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Question 1 of 10

1. For calculating the modulus of rupture from the thin-walled hollow cylinder, the diameter to wall thickness ratio should be in the order of __________

Question 1 of 10

Question 2 of 10

2. As the temperature increases, the difference between the strength of a notched sample and un-notched sample ____________

Question 2 of 10

Question 3 of 10

3. The diameter of the steel ball used in Brinell hardness is ________

Question 3 of 10

Question 4 of 10

4. The stress concentration and notch sensitivity are the same phenomena in the material.

Question 4 of 10

Question 5 of 10

5. A screw-driven constant head velocity machine for tensile testing machine are _________

Question 5 of 10

Question 6 of 10

6. For measuring the hardness of the cementite and ferrite in a pearlite colony individually, the Knoop hardness measurement is the best method.

Question 6 of 10

Question 7 of 10

7. In the case of the FCC metal, the yield strength is more temperature-dependent than the tensile strength of the given metal.

Question 7 of 10

Question 8 of 10

8. The strain rate calculated from engineering strain and correct strain gives the same result.

Question 8 of 10

Question 9 of 10

9. The fracture stress according to Orowan’s theory of brittle fracture is __________ (where E is Yong’s modulus, ϒp is the plastic work required to extend the crack wall of the length 2a).

Question 9 of 10

Question 10 of 10

10. The following graph shows the change in hardness with the variation of the temperature of the material. There is an abrupt change in the slope of the line. This cannot be due to ____________
mechanical-metallurgy-questions-answers-relationship-hardness-flow-curve-q7

Question 10 of 10


 

Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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