Test: Bending Stresses in Beams - Mechanical Engineering MCQ

100 MPa

200 MPa

400 MPa

800 MPa

be weakened 0.5 times

be weakened 0.6 times

be strengthened 0.6 times

have the same strength as the original beam because the cross-sectional area remains the same

section modulus

modulus of rupture

flexural rigidity

polar modulus

strain is uniform along the length of beam

bending stress is same at every section of the beam

bending stress is proportional to strain at all sections

strain is not proportional to distance from the neutral axis

maximum tensile stress

maximum compressive stress

zero bending stress

stress developed which depends upon type of loading

bending moment {M)

√M

M²

M^-1

top fibre

middle fibre

bottom fibre

every horizontal plane

bending moment is same throughout the beam

shear stress is same throughout the beam

deflection is same throughout the beam

bending stress is same at every section along its longitudinal axis

Young’s modulus

Shear modulus

Poisson’s ratio

Both Young’s modulus and shear modulus

bending moment remains constant

deflection remains constant

unit stress remains constant

all of the above remains constant