Question 1-10

Hello every one, here are the top best mechanical engineering interview questions with answers which are asked by HR and in technical rounds.


1)     What is stress?
Ans)  The force of resistance per unit area, offered by a body against deformation is known as stress.

                                           σ = P/ A
                where,
                                     σ = stress
                                     P = External force
                                     A = Cross sectional area 

2)     What is load?
Ans) The external force acting on a body is called the load.

3)     What is strain?
Ans) The ratio of change is dimension of the body to the original dimension is known as strain.

4)     What is tensile strain?
Ans) The ratio of increase in length to the original length of the body is known as tensile strain.

5)     What is compressive strain?
Ans) The ratio of decrease in length of the body to the original length is known as compressive strain.

6)     What is volumetric strain?
Ans) The ratio of change in volume of the body to the original volume is known as volumetric strain.

7)     What is the unit of stress?
Ans) kgf/m²

8)     What are the types of stresses?
Ans)  i. Normal stress
                * Tensile stress
                * Compressive stress
         ii. Shear stress.

9)     What is normal stress?
Ans) It is a stress which acts in a direction perpendicular to the area. It is represented by σ. It is further          divided into  
                  * Tensile stress
                  * Compressive stress

10)   What is tensile stress?
Ans) The stress induced in a body, when subjected to two equal and opposite pull as a result of which there is increase in length, is known as tensile stress.