# MCE132 Basic Properties of Engineering Materials Quiz

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## 32 Questions

### What do mechanical properties of materials describe?

The behavior of materials under different types of loads

### What is stress in the context of mechanical properties of materials?

The intensity of internal forces

### What is strain in the context of mechanical properties of materials?

A dimensionless value representing the change in length relative to the original length

### What are the units for stress typically expressed in?

$N/mm^2$ (MPa)

### What is the definition of normal stress?

Stress normal to the section, could be tension or compression stress

### How is strength of a material measured?

By the maximum stress

### What is the point in the stress-strain curve where plastic deformation begins?

Yield or proof stress

### What is elasticity defined as?

Ability of a material to return to its original shape and dimensions after removing the applied load

### What is stiffness a measure of?

Resistance to deformations

### What is Poisson's ratio?

The ratio between lateral strain and axial strain

### What does ductility measure?

% Reduction in area in Tension test of steel

### What characterizes brittle materials?

Failure almost without deformations

### What does hardness measure?

Resistance to any indentation or scratch caused by any type of load

### What is shear stress?

Stress parallel to the section.

### What is the unit of stress typically expressed in?

$N/mm^2 (MPa)$

Stress

Strain

Strain

### What is the definition of ductility?

The maximum percentage of deformation a material can undergo

### What does Poisson's ratio measure?

The ratio between lateral strain and axial strain

Stress

### What does hardness measure?

The material's surface resistance to indentation or scratch

Poisson's ratio

### What characterizes brittle materials?

Failure without deformations

### 8

What type of loading involves a force applied repeatedly, causing variation in the magnitude and sometimes in the sense of the internal forces?

### What is elasticity defined as?

Ability of a material to return to its original shape and dimensions after removing the applied load

### What is strain in the context of mechanical properties of materials?

The ratio between lateral strain and axial strain

Test your understanding of the properties of engineering materials, with a focus on mechanical properties subjected to various types of loads such as static, dynamic, or repeated loads. This quiz covers topics taught by Dr. Engy Hany, Assistant Professor at the Faculty of Engineering, Ain Shams University.

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