Shear Force and Bending Moment MCQ Questions
1-For the shafts having square cross sections, the maximum shear stress occurs at a point
(A) on the edge of the cross section that is closest to the centre axis of the shaft.
(B) on the diagonal of the cross section that is far to the centre axis of the shaft.
(C) on the diagonal of the cross section, at half the edge length from the centre axis of the shaft.
(D) on the diagonal of the cross section, at one-fourth of diagonal length from the centre axis of the shaft.
2-Shear centre is the point in or outside a section through which the shear force applied produces____________
(A) only twisting
(B) only bending
(C) twisting and bending
(D) no twisting and no bending
3-Which of the following statements is not applicable to Unit Load Method?
(A) External and internal forces are in equilibrium
(B) The structure is determinate
(C) The material is strained well within elastic limit
(D) The structure is redundant
4-Theory of simple bending is derived for the condition when beam is subjected to _______ .
(A) Shear force and bending moment
(B) Shear force only
(C) Bending moment only
(D) Torsion only
5-Slope deflection method is suitable for analysis of
(A) Continuous beam
(B) Simply supported beam
(C) Fixed beam
(D) Cantilever beam
6- If a simply supported beam of span 4 m is subjected to terminal couple of 4 kN-m at both the ends, then the magnitude of the central deflection would be
(A) 4/EI
(B) 8/EI
(C) 2/EI
(D) 16/EI
7-Under uniaxial loading, the maximum shear stress is ____________ times the uniaxial stress
(A) 0.5
(B) 2
(C) 1.5
(D) 3
8-For a cantilever beam of span L carrying uniformly distributed load, w on its entire span, the maximum bending moment is ______.
(A) WL2/ 2
(B) WL /2
(C) WL4/ 2
(D) WL8/ 2
9-Macaulay’s method is particularly suitable for beams subjected to _______ loads.
(A) Point
(B) Distributed
(C) Varying
(D) None of the above
10- A fixed beam of uniform section is carrying a point load at its mid-span. If the moment of inertia of the middle half-length is reduced to half its previous value, then the fixed end moments will
(A) Increase
(B) Decrease
(C) Remain unchanged
(D) Change their direction
11-A doubly reinforced beam is considered as less economical as compared to a singly reinforced beam because
(A) The depth of section is small
(B) Concrete is under-stressed
(C) Compressive steel is under-stressed
(D) Tensile steel is under-stressed
ANSWERS:
1-(A), 2-(B), 3-(D), 4-(C), 5-(A), 6-(B), 7-(A), 8-(A), 9-(A), 10-(A), 11-(C)