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Test: Mechanical Properties of Materials - 2 - Mechanical Engineering MCQ


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10 Questions MCQ Test - Test: Mechanical Properties of Materials - 2

Test: Mechanical Properties of Materials - 2 for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Test: Mechanical Properties of Materials - 2 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Mechanical Properties of Materials - 2 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Mechanical Properties of Materials - 2 below.
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Test: Mechanical Properties of Materials - 2 - Question 1

Flow stress corresponds to

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The stress required to cause the metal to flow plastically to any given strain.

Test: Mechanical Properties of Materials - 2 - Question 2

Plasticity must be considered in designing for processes except

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Chances of plastic deformation is negligible for a rotating shaft if the system is balanced.

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Test: Mechanical Properties of Materials - 2 - Question 3

The loss of strength in compression due to overloading is known as

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(Bauschinger effect and hysteresis loop) Due to stress loading unloading, the yield stress in tension gets increased and yield stress in compression gets decreased. This decreasing of yield stress in compression is the Bauschinger effect. 

Test: Mechanical Properties of Materials - 2 - Question 4

Rupture stress is

Test: Mechanical Properties of Materials - 2 - Question 5

The property of a material by virtue of which it can be beaten or rolled into plates is called

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it is a property of material allows it to expand in all directions without rupture. A malleable material has to be highly plastic, though it may not posses high stress. This property is of great use in processes such as forging, hot rolling, etc.

Test: Mechanical Properties of Materials - 2 - Question 6

Hardness is the resistance to

Test: Mechanical Properties of Materials - 2 - Question 7

Which of the following factors does not affect the mechanical properties of a material under applied loads?

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Contents of alloys improve or decrease the hardness and strength of materials. Finer grain sizes improve the strength of the material. Imperfection and defects reduce the strength of the material. Shape, however, has little or no effect on the material.

Test: Mechanical Properties of Materials - 2 - Question 8

The change in the unit volume of a material under tension with increase in its Poisson’s ratio will

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The poisson's ratio is related to modulus of elasticity as Y=3B (1 − 2σ).
Since stress is same for Y and B, we get, dL/L = dV/3V (1 − 2σ)
⟹dV = 3V(dL/L)(1 − 2σ)
As σ is increased, dV decreases. 

Test: Mechanical Properties of Materials - 2 - Question 9

True stress-strain curve for material is plotted between

Test: Mechanical Properties of Materials - 2 - Question 10

Consider the following statements about truestress-strain method/curve:
1. It is more sensitive to changes in both metallurgical and mechanical conditions.
2. It gives a more accurate picture of the ductility.
3. It can be correlated with stress-strain values in other tests like torsion, impact, combined stress tests etc.
4. It can be used for compression tests as well.

Which of the above statements are correct?

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