Top 1000+ Solved Strength of Materials MCQ Questions Answer
Q. If a material has identical properties in all directions, it is said to be
a. homogeneous
b. isotropic
c. elastic
d. orthotropic
Q. A prismatic bar of volume V is subjected to a tensile force in longitudinal direction. If Poisson's ratio of the material is u and longitudinal strain is e, then the final volume of the bar becomes
a. (l + e)(l-u)2V
b. (l-e)2(l + ue)V
c. (l + e)(l-ne)2V
d. (l-ue)3V
Q. If a composite bar of steel and copper is heated, then the copper bar will be under
a. tension
b. compression
c. shear
d. torsion
Q. Effective length of a weld is equal to
a. overall length - weld size
b. overall length - throat thickness
c. overall length - 2 x weld size
d. overall length - 2 x throat thickness
Q. Size of a right angled fillet weld is given by
a. 0.707 x throat thickness
b. 0.414 x throat thickness
c. 2.0 x throat thickness
d. throat thickness
Q. The effective length of a fillet weld designed to transmit axial load shall not be less than
a. 2 x size of weld
b. 4 x size of weld
c. 6 x size of weld
d. 10 x size of weld
Q. Size of fillet weld with unequal legs is equal to
a. smaller leg length
b. longer leg length
c. throat thickness
d. average of smaller and longer leg lengths
Q. Weakest section in a fillet weld is
a. throat of the fillet
b. smaller side
c. side parallel to force
d. side perpendicular to force
Q. Effective throat thickness of a fillet weld is
a. 0.707 x size of weld
b. 1.414 x size of weld
c. a function of the angle between fusion faces
d. equal to the side of the fillet
Q. According to Unwin's formula, the dia¬meter of rivet in mm to suit the t mm thickness ofplate is given by
a. 6t
b. 6Vt
c. 1.9-y/t
d. 1.5 t+ 4
Q. At a point in a strained body carrying two unequal unlike principal stresses pi and p2 (Pi >P2X the maximum shear stress is given by
a. p,/2
b. p2/2
c. (p,-p2)/2
d. (p, + p2)/2
Q. If a point in a strained material is subjected to equal normal and tangential stresses, then the angle of obliquity is
a. 0°
b. 45°
c. tan"1 (1/2)
d. tan"1 (2)