Description : The Point of contraflexure occurs in case of (a) Cantilever beams (b) Simply supported beams (c) Over hanging beams (d) All types of beams
Last Answer : c) Over hanging beams
Description : Which of the following are statically determinate beams? (a) Only simply supported beams (b) Cantilever, overhanging and simply supported (c) Fixed beams (d) Continuous beams
Last Answer : (b) Cantilever, overhanging and simply supported
Description : In a continuous bending moment curve the point where it changes sign, is called (A) Point of inflexion (B) Point of contraflexure (C) Point of virtual hinge (D) All the above
Last Answer : (D) All the above
Description : In a loaded beam, the point of contraflexure occurs at a section where (A) Bending moment is minimum (B) Bending moment is zero or changes sign (C) Bending moment is maximum (D) Shearing force is maximum
Last Answer : Answer: Option B
Description : Design of R.C.C. cantilever beams, is based on the resultant force at (A) Fixed end (B) Free end (C) Mid span (D) Mid span and fixed support
Last Answer : Answer: Option A
Description : .For a fixed beam with midpoint load point of contraflexure occurs at a. L/4 b. L/2 c. L/6 d. L/8
Last Answer : a. L/4
Description : For a continuous floor slab supported on beams, the ratio of end span length and intermediate span length, is (A) 0.6 (B) 0.7 (C) 0.8 (D) 0.9
Last Answer : Answer: Option D
Description : If the ratio of the span to the overall depth does not exceed 10, the stiffness of the beam will ordinarily be satisfactory in case of a (A) Simply supported beam (B) Continuous beam (C) Cantilever beam (D) None of these
Last Answer : Answer: Option C
Description : In counterfort type retaining walls (i) The vertical slab is designed as a continuous slab (ii) The heel slab is designed as a continuous slab (iii) The vertical slab is designed as a cantilever (iv) The heel slab is designed ... (ii) (B) (i)and(iv) (C) (ii) and (iii) (D) (iii) and (iv)
Description : The ‘transmission length’ requirement is to be satisfied in the design of (a) Pre-tensioned concrete beams (b) Post-tensioned concrete beam (c) Unbonded post-tensioned concrete (d) Post-tensioned continuous concrete beams
Last Answer : (a) Pre-tensioned concrete beams
Description : The point of contraflexure is the point where (A) B.M. changes sign (B) B.M. is maximum (C) B.M. is minimum (D) S.F. is zero
Last Answer : (A) B.M. changes sign
Description : Pre-stress loss due to friction occurs (A) Only in post-tensioned beams (B) Only in pre-tensioned beams (C) In both post-tensioned and pre-tensioned beams (D) None of the above
Description : In a simply supported beam carrying a uniformly distributed load over the left half span, the point of contraflexure will occur in (a) Left half span of the beam (b) Right half span of the beam. (c) Quarter points of the beam (d) Does not exist
Last Answer : (d) Does not exist
Description : The number of points of contraflexure in a simple supported beam carrying uniformly distributed load, is (A) 0 (B) 1 (C) 2 (D) 3
Last Answer : (A) 0
Description : Which one of the following statements is not correct with respect to PSC beams? (a) Loss due to shrinkage is proportional to water-cement ratio used in concrete (b) Loss due to creep is ... to the modulus of elasticity of concrete (d) Loss due to friction occurs in post tensioned concrete members
Last Answer : (c) Loss due to elastic deformation is directly proportionally to the modulus of elasticity of concrete
Description : In continuous beam, the intermediate beams are subjected to a. some bending moment b. no bending moment c. no slope d.no deflection
Last Answer : a. some bending moment
Description : If continuous beam is overhanging then overhanging acts as a a.propped cantilever b.cantilever c.supported cantilever d.extended supported beam
Last Answer : b.cantilever
Description : For a fixed beam with UDL,point of contraflexure is a.0.211L or 0.789L b. 0.365 L or 0.635 L c. 0.177 L or 0.823 L d.0.477 L or 0.523 L
Last Answer : a.0.211L or 0.789L
Description : At the point of contraflexure (a) B.M is mimimum (b) B.M is maximum (c) B.M is either zero or changes sign (d) None of these
Last Answer : c) B.M is either zero or changes sign
Description : A simply supported beam A carries a point load at its mid span. Another identical beam B carries the same load but uniformly distributed over the entire span. The ratio of the maximum deflections of the beams A and B, will be (A) 2/3 (B) 3/2 (C) 5/8 (D) 8/5
Last Answer : (D) 8/5
Description : A cantilever carrying a uniformly distributed load W over its full length is propped at its free end such that it is at the level of the fixed end. The bending moment will be zero at its free end also at ... point of the cantilever (C) 1/4th length from free end (D) 3/4th length from free end
Last Answer : (D) 3/4th length from free end
Description : The Castigliano's second theorem can be used to compute deflections (A) In statically determinate structures only (B) For any type of structure (C) At the point under the load only (D) For beams and frames only
Last Answer : (B) For any type of structure
Description : Explain the difference between the points of inflexion and contraflexure.
Last Answer : At points of inflexion in a loaded beam the bending moment is zero and at points of contraflexure in loaded beam the bending moment changes sign from increasing to decreasing.
Description : The maximum deflection due to a uniformly distributed load w/unit length over entire span of a cantilever of length l and of flexural rigidly EI, is (A) wl3 /3EI (B) wl4 /3EI (C) wl4 /8EI (D) wl4 /12E
Last Answer : (C) wl4 /8EI
Description : The ratio of the maximum deflection of a cantilever beam with an isolated load at its free end and with a uniformly distributed load over its entire length, is (A) 1 (B) 24/15 (C) 3/8 (D) 8/3
Last Answer : (D) 8/3
Description : Shear force for a cantilever carrying a uniformly distributed load over its length, is (A) Triangle (B) Rectangle (C) Parabola (D) Cubic parabola
Last Answer : (B) Rectangle
Description : A cantilever carries is uniformly distributed load W over its whole length and a force W acts at its free end upward. The net deflection of the free end will be (A) Zero (B) (5/24) (WL3 /EI) upward (C) (5/24) (WL3 /EI) downward (D) None of these
Last Answer : (B) (5/24) (WL3 /EI) upward
Description : Maximum deflection of a (A) Cantilever beam carrying a concentrated load W at its free end is WL3 /3EI (B) Simply supported beam carrying a concentrated load W at mid-span is WL3 /48EI (C) Cantilever beam, carrying a uniformly distributed load over span is WL3 /8EI (D) All the above
Description : Under normal conditions using an ordinary cement, the period of removal of the form work, is: (A) 7 days for beam soffits (B) 14 days for bottom slabs of spans 4.6 m and more (C) 21 days for bottom beams over 6 m spans (D) All the above
Description : Muller Breslau's principle for obtaining influence lines is applicable to (i) Trusses (ii) Statically determinate beams and frames (iii) Statically indeterminate structures, the material of which is elastic and follows Hooke's law (iv ... B) (i), (ii) and (iv) (C) (i) and (ii) (D) Only (i)
Last Answer : (A) (i), (ii) and (iii)
Description : The form work from the sides of beams can be removed only after (A) 1 day (B) 4 days (C) 7 days (D) 14 days
Description : The form Work including the props can be removed from beams, only after (A) 3 day (B) 7 days (C) 14 days (D) 21 days
Description : The deep beams are designed for (a) Shear force only (b) Bending moment only (c) Both S.F & B.M (d) Bearing
Last Answer : (b) Bending moment only
Description : The ratio of the deflections of the free end of a cantilever due to an isolated load at 1/3rd and 2/3rd of the span, is (A) 1/7 (B) 2/7 (C) 3/7 (D) 2/5
Last Answer : (B) 2/7
Description : For beams of uniform strength, if depth is constant, (A) Width b M (B) Width b M (C) Width b 3 M (D) Width b 1/M
Last Answer : (A) Width b M
Description : A cantilever of length 2 cm and depth 10 cm tapers in plan from a width 24 cm to zero at its free end. If the modulus of elasticity of the material is 0.2 × 106 N/mm2 , the deflection of the free end, is (A) 2 mm (B) 3 mm (C) 4 mm (D) 5 mm
Last Answer : (D) 5 mm
Description : The ratio of the maximum deflections of a simply supported beam with a central load W and of a cantilever of same length and with a load W at its free end, is (A) 1/8 (B) 1/10 (C) 1/12 (D) 1/16
Last Answer : (D) 1/16
Description : 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
Last Answer : (D) Composite beams
Description : The maximum deflection due to a load W at the free end of a cantilever of length L and having flexural rigidity EI, is (A) WL²/2EI (B) WL²/3EI (C) WL3 /2EI (D) WL3 /3EI
Last Answer : (D) WL3 /3EI
Description : The assumption in the theory of bending of beams is: (A) Material is homogeneous (B) Material is isotropic (C) Young's modulus is same in tension as well as in compression (D) All the above
Description : A cantilever of length is subjected to a bending moment at its free end. If EI is the flexural rigidity of the section, the deflection of the free end, is (A) ML/EI (B) ML/2EI (C) ML²/2EI (D) ML²/3EI
Last Answer : (D) ML²/3EI
Description : If the length of a cantilever carrying an isolated load at its free end is doubled, the deflection of the free end will increase by (A) 8 (B) 1/8 (C) 1/3 (D) 2
Last Answer : (B) 1/8
Description : Maximum deflection of a cantilever due to pure bending moment M at its free end, is (A) ML²/3EI (B) ML²/4EI (C) ML²/6EI (D) ML²/2EI
Last Answer : (D) ML²/2EI
Description : The moment diagram for a cantilever carrying linearly varying load from zero at its free end and to maximum at the fixed end will be a (A) Triangle (B) Rectangle (C) Parabola (D) Cubic parabola
Last Answer : (D) Cubic parabola
Description : The cross sections of the beams of equal length are a circle and a square whose permissible bending stress is same under same maximum bending. The ratio of their flexural weights is, (A) 1.118 (B) 1.338 (C) 1.228 (D) 1.108
Last Answer : (A) 1.118
Description : The moment diagram for a cantilever which is subjected to a uniformly distributed load will be a (A) Triangle (B) Rectangle (C) Parabola (D) Cubic parabola
Last Answer : (C) Parabola
Description : The deflection due to couple M at the free end of a cantilever length L is (A) ML/EI (B) 2ML/EI (C) ML²/2E (D) M²L/2EI
Last Answer : (C) ML²/2EI
Description : The moment diagram for a cantilever carrying a concentrated load at its free end, will be (A) Triangle (B) Rectangle (C) Parabola (D) Cubic parabola
Last Answer : (A) Triangle
Description : The areas of cross-section of a square beam and a circular beam subjected to equal bending moments, are same. (A) Circular beam is more economical (B) Square beam is more economical (C) Both the beams are equally strong (D) Both the beams are equally economical
Last Answer : (B) Square beam is more economical
Description : The moment diagram for a cantilever whose free end is subjected to a bending moment, will be a (A) Triangle (B) Rectangle (C) Parabola (D) Cubic parabola