Strength of Materials Multiple Choice Questions (MCQ)
1-In a cantilever with uniformly distributed load, the variation of a bending moment is according to
(A) Linear Law
(B) Parabolic Law
(C) Cubic Law
(D) Horizontal Law
2-In which of the following beams, the supports are not situated at the ends
(A) Cantilever beam
(B) Overhanging beam
(C) Simply supported beam
(D) Fixed beam
3-The value of shear force at A for a simply supported beam AB of span 10 m with point load 25 kN at centre of span is
(A) 2.5 kN
(B) 12.5 kN
(C) 25 kN
(D) 50 kN
4-If I and δl are the length and change in length respectively, the strain is equal to
(A) δl/l
(B) l/δl
(C) l x δl
(D) l2 x δl
5-A perfect frame should satisfy the following relation
(A) m = 2j – 3
(B) m = 2j – 2
(C) m = 3j – 3
(D) m = 3j – 4
6- The property of certain materials of returning. back completely to its original shape and size, after the removal of external forces, then it is said to be
(A) Perfectly Plastic
(B) Perfectly Elastic
(C) Partially Plastic
(D) Partially Elastic
7- The deflection at the free end of a cantilever of length (l) carrying a point load (W) at its’ free end is given as
(A) Wl3/2EI
(B) Wl2/2EI
(C) Wl/2EI
(D) Wl3/3EI
8- Algebraic sum of the moments of the forces, to the right (or) left of the beam section is known as
(A) Bending moment
(B) Uniformly distributed load
(C) Shear force
(D) Point load
9- The difference between number of unknown reaction components and the number of available equilibrium equations is
(A) degree of displacement
(B) degree of determinacy
(C) degree of indeterminacy
(D) degree of freedom
10- A column of length is one end fixed and other pin jointed. Its equivalent length will be equal to
(A) 0.707l
(B) 0.5l
(C) l
(D) 2l
11- What is the critical load (P) value of a column with one end fixed and other end hinged?
(A) P = π2EI/4L2
(B) P = 2π2EI/L2
(C) P = 4π2EI/L2
(D) P = π2EI/L2
12- A propped cantilever beam of span ‘l’ propped at free end is subjected to UDL of w/m run over its entire length then in bending moment diagram, the point of contra flexure occur at a distance of
(A) l/2 from proposed end
(B) l/4 from proposed end
(C) 3l/4 from proposed end
(D) 2l/4 from proposed end
ANSWERS:
1-(B), 2-(B), 3-(B), 4-(A), 5-(A), 6-(B), 7-(D), 8-(A), 9-(C), 10-(A), 11-(B), 12-(C)