121. For a strongest rectangular beam cut from a circular log, the ratio of the width and depth, is________________?
A. 0.303
B. 0.404
C. 0.505
D. 0.707
✅ The correct answer is option D.
Theory of Structures MCQs
122. The horizontal deflection of a parabolic curved beam of span 10 m and rise 3 m when loaded with a uniformly distributed load l t per horizontal length is (where Ic is the M.I. at the crown, which varies as the slope of the arch)___________________?
A. 50/EIc
B. 100/EIc
C. 150/EIc
D. 200/EIc
✅ The correct answer is option D.
123. The eccentricity (e) of a hollow circular column, external diameter 25 cm, internal diameter 15 cm for an eccentric load 100 t for non-development of tension, is__________________?
A. 2.75 cm
B. 3.00 cm
C. 3.50 cm
D. 4.25 cm
✅ The correct answer is option D.
124. The forces in the members of simple trusses, may be analysed by________________?
A. Graphical method
B. Method of joints
C. Method of sections
D. All the above
✅ The correct answer is option D.
125. H V are the algebraic sums of the forces resolved horizontally and vertically respectively, M is the algebraic sum of the moments of forces about any point, for the equilibrium of the body acted upon____________________?
A. H = 0
B. V = 0
C. M = 0
D. All the above
✅ The correct answer is option D.
126. The S.F. diagram of a loaded beam shown in the given figure is that of________________?
A. A simply supported beam with isolated central load
B. A simply supported beam with uniformly distributed load
C. A cantilever with an isolated load at the free end
D. A cantilever with a uniformly distributed load
✅ The correct answer is option D.
127. Beams composed of more than one material, rigidly connected together so as to behave as one piece, are known as________________?
A. Compound beams
B. Indeterminate beams
C. Determinate beams
D. Composite beams
✅ The correct answer is option D.
128. length of a column of length L, having one end fixed and other end hinged, is The equivalent_____________?
A. 2 L
B. L
C. L/2
D. L
✅ The correct answer is option D.
129. The ratio of the stresses produced by a suddenly applied load and by a gradually applied load on a bar, is__________________?
A. 1/4
B. 1/2
C. 1
D. 2
✅ The correct answer is option D.
130. A simply supported rolled steel joist 8 m long carries a uniformly distributed load over it span so that the maximum bending stress is 75 N/mm². If the slope at the ends is 0.005 radian and the value of E = 0.2 × 106 N/mm2, the depth of the joist, is________________?
A. 200 mm
B. 250 mm
C. 300 mm
D. 400 mm
✅ The correct answer is option D.