Top 150+ Solved Structural Mechanics MCQ Questions Answer
Q. The materials having same elastic properties in all directions are called
a. ideal materials
b. uniform materials
c. isotropic materials
d. elastic materials.
Q. Modulus of rigidity is defined as the ratio of
a. longitudinal stress and longitudinal strain
b. volumetric stress and volumetric strain
c. lateral stress and lateral strain
d. shear stress and shear strain
Q. If the radius of wire stretched by a load is doubled, then its Young's modulus will be
a. Doubled
b. Halved
c. become four times
d. remain unaffected
Q. The intensity of stress which causes unit strain is called
a. unit stress
b. bulk modulus
c. modulus of rigidity
d. modulus of elasticity
Q. Which of the following has no unit
a. kinematic viscosity
b. surface tension
c. bulk modulus
d. strain
Q. Rankine-Golden formula accounts for direct as well as buckling stress and is applicable to
a. very long columns
b. long columns
c. short columns
d. intermediate columns
Q. Maximum deflection of a cantilever due to pure bending moment M at its freeend, is
a. ML2/3EI
b. ML2/4EI
c. ML2/6EI
d. ML2/2EI
Q. The ratio of the effective length of a column and minimum radius of gyration ofits cross-sectional area, is known
a. buckling factor
b. slenderness ratio
c. crippling factor
d. none of these
Q. A long vertical member, subjected to an axial compressive load, is called
a. a column
b. a strut
c. a tie
d. a stanchion
Q. Columns of given length, cross-section and material have different values of buckling loads for different end conditions. The strongest column is one whose
a. one end is fixed and other end is hinged
b. both ends are hinged or pin jointed
c. one end is fixed and the other end entirely free
d. both the ends are fixed
Q. The slenderness ratio of a vertical column of square cross- section of 10 cm side and 500 cm long, is
a. 117.2
b. 17.3
c. 173.2
d. 137.2
Q. The equivalent length of a column fixed at one end and free at the other end, is
a. 0.5L
b. 0.7L
c. L
d. 2L
Q. The radius of gyration of a squar section is not proportional to
a. square root of the moment of inertia
b. square root of the inverse of the area
c. square root of the moment of inertia divided by area of the section
d. side of squar
Q. A sudden increase or decrease in shear force diagram between any two points indicates that there is
a. No loading between the two points
b. Point loads between the two points
c. U.D.L. between the two points
d. None of these