Civil Engineering Quiz | SOM MCQ | Strength of Materials MCQ
1 >>If two forces acting at a joint are not along the straight line, then for the equilibrium of the joint ?
(A) forces must be equal and of the same sign
(B) forces must be equal in magnitude but opposite in sign
(C) one of the forces must be zero
(D) each force must be zero
2 >>The minimum number of rivets for the connection of a gusset plate, is ?
(A) 1
(B) 3
(C) 2
(D) 4
3 >>If the width of a simply supported beam carrying an isolated load at its centre is doubled, the deflection of the beam at the centre is changed by ?
(A) 4
(B) 2
(C) 43313
(D) 43132
4 >>The weakest section of a diamond riveting, is the section which passes through ?
(A) second row
(B) one rivet hole of end row
(C) central raw
(D) first row
5 >>The ratio of elongations of a conical bar due to its own weight and that of a prismatic bar of the same length, is ?
(A) 43191
(B) 43221
(C) 43132
(D) 43160
6 >>A beam of length L is pinned at both ends and is subjected to a concentrated bending couple of moment M at its centre. The maximum bending moment in the beam is ?
(A) M/3
(B) M
(C) ML/2
(D) M/2
7 >>The shape of the bending moment diagram over the length of a beam, carrying a uniformly distributed load is always ?
(A) cubical
(B) circular
(C) linear
(D) parabolic
8 >>In a loaded beam, the point of con-traflexture occurs at a section where ?
(A) shearing force is maximum
(B) bending moment is minimum
(C) bending moment is maximum
(D) bending moment is zero or changes sign
9 >>If the shear force along a section of a beam is zero, the bending moment at the section is ?
(A) average of maximum-minimum
(B) maximum
(C) minimum
(D) zero
10 >>A three-hinged arch is said to be : ?
(A) a bent beam
(B) statically determinate structure
(C) none of these
(D) statically indeterminate structure
11 >>The deflection of any rectangular beam simply supported, is ?
(A) inversely proportional to the cube of its depth
(B) directly proportional to its weight
(C) directly proportional to the cube of its length
(D) inversely proportional to its width
12 >>The ratio of the maximum deflections of a beam simply supported at its ends with an isolated central load and that of with a uniformly distributed load over its entire length, is ?
(A) 43161
(B) 1
(C) 43160
(D) 43134
13 >>The ratio of strengths of solid to hollow shafts, both having outside diameter D and hollow having inside diameter D/2, in torsion, is ?
(A) 42370
(B) 15/16
(C) 43132
(D) 43191
14 >>For a simply supported beam with a central load, the bending moment is ?
(A) least at the centre
(B) maximum at the centre
(C) maximum at the supports
(D) least at the supports
15 >>The ratio of the moment of inertia of a circular plate and that of a square plate for equal depth, is ?
(A) more than one
(B) less than one
(C) equal to 3Ï€/16
(D) equal to one
16 >>The maximum twisting moment a shaft can resist, is the product of the permissible shear stress and ?
(A) modulus of rigidly
(B) polar modulus
(C) moment of inertia
(D) polar moment of inertia
17 >>As compared to uniaxial tension or compression, the strain energy stored in bending is only ?
(A) 43160
(B) 43132
(C) 43191
(D) 43221
18 >>The slenderness ratio of a vertical column of a square cross-section of 2.5 cm sides and 300 cm length, is ?
(A) 416
(B) 200
(C) 240
(D) 360
19 >>The shape of the bending moment diagram over the length of a beam, having no external load, is always ?
(A) circular
(B) parabolic
(C) cubical
(D) linear
20 >>Pick up the incorrect statement ?
(A) Welded joints provide rigidity
(B) Welding takes more time than riveting
(C) Welded joints have better finish
(D) A welded joint develops strength of its parent metal
