Top 1000+ Solved Strength of Materials MCQ Questions Answer
Q. Four wires of same material are applied the same load. In which of the following cases, the elongation will be maximum (length, diameter)?
a. 2m, 1mm
b. 4m, 2mm
c. 8m, 4mm
d. 12m, 6mm
Q. The modulus of elasticity in terms of bulk modulus and modulus of rigidity is given by
a. 9kg/(3k+g)
b. 9kg/(k+3g)
c. (3k+g)/9kg
d. (k+3g)/9kg
Q. For a Poisson's ratio of 0.4 for a material the ratio of shear modulus of elasticity to modulus of rigidity is
a. 14/5
b. 5/7
c. 7/5
d. 5/14
Q. A bar of 30 mm diameter is subjected to an axial force 280 KN length of bar is 400 m and E= 200GPa. Determine volumetric strain if m=4.
a. 1.46x10-3
b. 9.9 x 10-4
c. 2.9 x 10-3
d. 1.48 x 10-4
Q. 10. A tensile material is having Young’s modulus 2.1 x105 N/mm2 and modulus of Rigidity is 0.82 x105 N/mm2. The value of Bulk Modulus is ..
a. 1.4 x105 n/mm2
b. 1.6 x105 n/mm2
c. 1.81 x105 n/mm2
d. 1.5 x105 n/mm2
Q. The axial force in the portion AB of the member shown in Fig. 1.1 is kN.
a. 50
b. -50
c. 40
d. -40
Q. If the member shown in Fig. 1.1 has a square cross section of 25 mm25 mm and E = 200 GPa, the change in length of portion AB is mm.
a. 0.24
b. -0.24
c. 0.32
d. -0.32
Q. The materials which exhibit the same elastic properties in all directions are called
a. Visco-elastic
b. Isentropic
c. Isotropic
d. Inelastic
e. Homogeneous
Q. The size of hole drilled in plates for rivetting is
a. Equal to the diameter of rivet shank
b. Slightly smaller than the diameter of river shank
c. 1.5 to 2 mm smaller than the diameter of rivet for revets of 25 mm and above size
d. 1.5 to 2 mm large than the diameter of the rivet for rivets of 25 mm and above size
e. None of the above
Q. The potential energy stored up in a deformed body is known as
a. Strain energy
b. Potential energy
c. Resilience
d. Deformation energy
e. None of the above