This document discusses different types of stress and strain. It states that internal resistive force is a type of stress, and the basic types of stress are tensile, compressive, and shear, but not volumetric. When tensile stress is applied axially to a circular rod, its diameter decreases and length increases, decreasing the volume. Tensile strain is an increase in length over original length, while compressive strain is a decrease in length over original length. Volumetric strain is a change in volume over original volume. Hooke's law is applicable within the elastic limit. Young's modulus of elasticity is the ratio of tensile stress to tensile strain.

1. Stress is
a. External force
b. Internal resistive force
c. Axial force
d. Radial force
(Ans:b)
Following are the basic types of stress
except
a. Tensile stress
b. Compressive stress
c. Shear stress
d. Volumetric stress
(Ans:d)
When tensile stress is applied axially on a
circular rod its
i. diameter decreases
ii. length increases
iii. volume decreases
Which of the above are true?
a. Only i
b. Only ii
c. i & ii
d. All of the above
(Ans:c)
When tensile stress is applied axially on a
circular rod its
i. diameter increases
ii. length decreases
iii. volume decreases
Which of the above are true?
a. Only i
b. Only ii
c. i & ii
d. All of the above
(Ans:c)
Which of the following is not a basic type of
strain?
a. Compressive strain
b. Shear strain
c. Area strain
d. Volume strain
(Ans:c)
Tensile Strain is
a. Increase in length / original
length
b. Decrease in length / original
length
c. Change in volume / original
volume
d. All of the above
(Ans:a)
Compressive Strain is
a. Increase in length / original
length
b. Decrease in length / original
length
c. Change in volume / original
volume
d. All of the above
(Ans:b)
Volumetric Strain is
a. Increase in length / original
length
b. Decrease in length / original
length
c. Change in volume / original
volume
d. All of the above
(Ans:c)
Hooke’s law is applicable within
a. Elastic limit
b. Plastic limit
c. Fracture point
d. Ultimate strength

2. (Ans:a)
Young’s Modulus of elasticity is
a. Tensile stress / Tensile strain
b. Shear stress / Shear strain
c. Tensile stress / Shear strain
d. Shear stress / Tensile strain
(Ans:a)