131. The compressive strength of brittle materials is __________ its tensile strength.
equal to
less than
greater than
✅ The correct answer is option C.
Strength of Materials MCQs
132. In a beam subjected to pure bending, the intensity of stress in any fibre is __________ the distance of the fibre from the neutral axis.
equal to
less than
more than
directly proportional
✅ The correct answer is option D.
133. When a bar is subjected to a change of temperature and its deformation is prevented, the stress induced in the bar is
tensile stress
compressive stress
shear stress
thermal stress
✅ The correct answer is option D.
134. If percentage elongation of a certain specimen made of a material ‘A’ under tensile test is 30% and the percentage elongation of a specimen with same dimensions made of another material ‘B’ is 40%, then material ‘B’ is more ductile than material ‘A’.
Correct
Incorrect
✅ The correct answer is option A.
135. When a bar of length l, width b and thickness t is subjected to a push of P, its
length, width and thickness increases
length, width and thickness decreases
length increases, width and thickness decreases
length decreases, widt
✅ The correct answer is option D.
136. The deformation of the bar per unit length in the direction of the force is known as
linear strain
lateral strain
volumetric strain
shear strain
✅ The correct answer is option A.
137. Poisson’s ratio is the ratio of linear stein to the volumetric strain.
TRUE
FALSE
✅ The correct answer is option B.
138. The maximum shear stress is equal to the radius of Mohr’s circle.
Correct
Incorrect
✅ The correct answer is option A.
139. The maximum shear stress, in the given figure, is equal to __________ of the Mohr’s circle.
radius
diameter
circumference
area
✅ The correct answer is option A.
140. Every direct stress is always accompanied by a strain in its own direction and an opposite kind of strain in every direction, at right angles to it. Such a strain is known as
linear strain
lateral strain
volumetric strain
shear strain
✅ The correct answer is option B.