If a constant section beam is subjected to a uniform bending moment throughout, its length bends
to
(A) A circular arc
(B) A parabolic arc
(C) A catenary
(D) None of these
Description : The shape of the bending moment diagram over the length of a beam, having no external load, is always (A) Linear (B) Parabolic (C) Cubical (D) Circular
Last Answer : (A) Linear
Description : The shape of the bending moment diagram over the length of a beam, carrying a uniformly distributed load is always (A) Linear (B) Parabolic (C) Cubical (D) Circular
Last Answer : (B) Parabolic
Description : The shape of the bending moment diagram over the length of a beam, carrying a uniformly increasing load, is always (A) Linear (B) Parabolic (C) Cubical (D) Circular
Last Answer : (C) Cubical
Description : The base of a column is subjected to moment. If the intensity of bearing pressure due to axial load is equal to stress due to moment, then the bearing pressure between the base and the concrete ... Tension at one end and compression at the other end (d) Compression, verying as a parabolic profile
Last Answer : (b) Zero at one end and compression at the other end
Description : A beam of uniform strength has a. same cross-section throughout the beam b. same bending stress at every section c. same bending moment at every section d. same shear stress at every section
Last Answer : b. same bending stress at every section
Description : A beam is said to be of uniform strength, if (A) B.M. is same throughout the beam (B) Shear stress is same throughout the beam (C) Deflection is same throughout the beam (D) Bending stress is same at every section along its longitudinal axis
Last Answer : (D) Bending stress is same at every section along its longitudinal axis
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 : is the pre-stressed force applied to the tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is . The maximum stress in the beam, subjected to a maximum bending moment , is (A) f = (P/A) + (Z/M) ... ) + (M/Z) (C) f = (P/A) + (M/Z) (D) f = (P/A) + (M/6Z)
Last Answer : Answer: Option C
Description : is the pre-stressed force applied to tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is . The minimum stress on the beam subjected to a maximum bending moment is (A) f = (P/A) - (Z/M) (B) f = (A/P) - (M/Z) (C) f = (P/A) - (M/Z) (D) f = (P/A) - (M/6Z)
Description : 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 (B) M/2 (C) M/3 (D) ML/2
Last Answer : (A) M
Description : Which one of the following is the correct ratio of plastic moment to yield moment for a simply supported beam of uniform square cross section throughout the span (a) 1.5 (b) 1.7 (c) 2.0 (d) 2.34
Last Answer : (a) 1.5
Description : The ratio of the length and diameter of a simply supported uniform circular beam which experiences maximum bending stress equal to tensile stress due to same load at its mid span, is (A) 1/8 (B) 1/4 (C) 1/2 (D) 1/3
Last Answer : (C) 1/2
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 : The curve of a catenary by nature is a.hyperbolic b.ellipse c.107 dynes d.circular e.parabolic
Last Answer : e. parabolic
Description : A beam is a structural member which is subjected to (a) Axial tension or compression (b) Transverse loads and couples (c) Twisting moment (d) No load, but its axis should be horizontal and x-section rectangular or circular
Last Answer : b) Transverse loads and couples
Description : A beam is said to be of uniform strength, if (A) B.M. is same throughout the beam (B) Deflection is same throughout the beam (C) Bending stress is same throughout the beam (D) Shear stress is same throughout the beam
Last Answer : (C) Bending stress is same throughout the beam
Description : If a three hinged parabolic arch carries a uniformly distributed load on its entire span, every section of the arch resists. (A) Compressive force (B) Tensile force (C) Shear force (D) Bending moment
Last Answer : (A) Compressive force
Description : A hollow prismatic beam of circular section is subjected to a torsional moment. The maximum shear stress occurs at (a) inner wall of cross section (b) middle of thickness (c) outer surface of shaft (d) none of these
Last Answer : (c) outer surface of shaft
Description : In a simply supported beam subjected to uniformly distributed load (w) over the entire length (l), total load=W, maximum Bending moment is (a) Wl/8 or wl2/8 at the mid-point (b) Wl/8 or wl2/8 at the end (c) Wl/4 or wl2/4 (d) Wl/2
Last Answer : (a) Wl/8 or wl2/8 at the mid-point
Description : The variation of shear stress in a circular shaft subjected to torsion is a. Linear b. Parabolic c. Hyperbolic. d. Uniform
Last Answer : a. Linear
Description : Distribution of shear intensity over a rectangular section of a beam, follows: (A) A circular curve (B) A straight line (C) A parabolic curve (D) An elliptical curve
Description : The effect of arching a beam, is (A) To reduce the bending moment throughout (B) To increase the bending moment throughout (C) Nothing on the bending throughout (D) All the above
Last Answer : (A) To reduce the bending moment throughout
Description : A cast iron T section beam is subjected to pure bending. For maximum compressive stress to be three times the maximum tensile stress, centre of gravity of the section from flange side is (A) h/4 (B) h/3 (C) h/2 (D) 2/3 h
Last Answer : (A) h/4
Description : If the maximum dip of a parabolic tendon carrying tension P is h and the effective length of the pre-stressed beam is L, the upward uniform pressure will be (A) 8hp/l (B) 8hp/l² (C) 8hl/p (D) 8hl/p²
Last Answer : Answer: Option B
Description : In case of a cantilever beam having UDL, bending moment variation will be (a) Linear (b) Parabolic (c) Cubic (d) None
Last Answer : (b) Parabolic
Description : In case of a cantilever beam having concentrated loads, bending moment variation will be (a) Linear (b) Parabolic (c) Cubic (d) None
Last Answer : (a) Linear
Description : A doubly reinforced section is used (a) When the members are subjected to alternate external loads and the bending moment in the sections reverses. (b) When the member are subjected to loading eccentric in ... . (c) When the members are subjected to accidental lateral loads . (d) All of the above
Last Answer : (d) All of the above
Description : The following assumption is not true in the theory of pure torsion: (A) The twist along the shaft is uniform (B) The shaft is of uniform circular section throughout (C) Cross- ... , which is plane before twist remains plane after twist (D) All radii get twisted due to torsion
Last Answer : (D) All radii get twisted due to torsion
Description : In case of a beam subjected to pure bending a.107 dynes b.the stress intensity in any fibre is proportional to the distance of the fibre from the neutral axis c.the stress intensity in any fibre is ... d.the stress intensity in any fibre is uniform e.the nature of stress in any fibre is identical
Last Answer : b. the stress intensity in any fibre is proportional to the distance of the fibre from the neutral axis
Description : In a simple bending theory, one of the assumption is that the plane sections before bending remain plane after bending. This assumption means that a. stress is uniform throughout the beam b. ... the distance from the neutral axis d. strain is proportional to the distance from the neutral axis
Last Answer : d. strain is proportional to the distance from the neutral axis
Description : For slopes of limited extent the surface of slippage, is usually along (A) A parabolic arc (B) An elliptical arc (C) A straight line (D) A circular arc
Last Answer : (D) A circular arc
Description : The stress-strain curve concrete in compression follows [ A ] a straight line [ B ] a rectangular parabolic curve [ C ] a semi circular arc [ D ] a cubic parabola
Last Answer : [ B ] a rectangular parabolic curve
Description : Bending moment at any section in a conjugate beam gives in the actual beam (A) Slope (B) Curvature (C) Deflection (D) Bending moment
Last Answer : (C) Deflection
Description : If the shear force along a section of a beam is zero, the bending moment at the section is (A) Zero (B) Maximum (C) Minimum (D) Average of maximum-minimum
Last Answer : (B) Maximum
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
Description : For finding out the bending moment for the arm (spoke) of flywheel the arm is assumed as 1. a cantilever beam fixed at the rim and subjected to tangential force at the hub 2. a simply ... tangential force at the rim 4. a fixed beam fixed at hub and rim and carrying uniformly distributed load
Last Answer : 3. a cantilever hub fixed at the rim and subjected to tangential force at the rim
Description : For finding out the bending moment for the arm (spoke) of flywheel, the arm is assumed as, (A) A cantilever beam fixed at the rim and subjected to tangential force at the hub (B) A simply ... tangential force at the rim (D) A fixed beam fixed at hub and rim and carrying uniformly distributed load
Last Answer : (C) A cantilever beam fixed at the hub and subjected to tangential force at the rim
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 : When a beam is subjected to a bending moment the strain in a layer is …………the distance from the neutral axis. (a) Independent of (b) Directly proportional to (c) Inversely proportional to (d) None of these
Last Answer : (b) Directly proportional to
Description : For any part of a beam subjected to uniformly distributed load, bending moment diagram is (a) Horizontal straight line (b) Vertical straight line (c) Line inclined to x-axis (d) Parabola
Last Answer : d) Parabola
Description : The shape of a suspended cable under its own weight is a.Catenary b.Elliptical c.Cycloidal d.Semi-circle e.Parabolic
Last Answer : a. Catenary
Description : The ratio of maximum bending stress to maximum shear stress on the cross section when a shaft is simultaneously subjected to a torque T and bending moment M, a. T/M b. M/T c. 2T/M d. 2M/T
Last Answer : d. 2M/T
Description : The maximum bending moment for a simply supported beam with a uniformly distributed load w/unit length, is (A) WI/2 (B) WI²/4 (C) WI²/8 (D) WI²/12
Last Answer : (C) WI²/8
Description : For a simply supported beam carrying uniformly distributed load W on it entire length L, the maximum bending moment is (A) WL/4 (B) WL/8 (C) WL/2 (D) WL/3
Last Answer : (B) WL/8
Description : In a reinforced concrete beam , the shear stress distribution above the neutral axis following a (a) A straight line (b) Circular curve (c) Parabolic curve (d) All the above
Last Answer : (c) Parabolic curve
Description : A river is said to be of uniform section if in its section A) A segment of a circle can be fitted (B) A parabolic section can be fitted (C) A rectangular section can be fitted (D) All the above
Last Answer : Answer: Option D
Description : The energy stored in a beam of length subjected to a constant B.M. is (A) M²L/2EI (B) ML²/2EI (C) M²L/EI (D) ML²/EI
Last Answer : (A) M²L/2E
Description : A uniformly distributed load (w) of length shorter than the span crosses a girder. The bending moment at a section in the girder will be maximum when (a) Head of the load is at the section (b) Tail ... load in the same ratio as it divides the span (d) Section divides the load in two equal lengths.
Last Answer : (c) Section divides the load in the same ratio as it divides the span
Description : The length of a column, having a uniform circular cross-section of 7.5 cm diameter and whose ends are hinged, is 5 m. If the value of E for the material is 2100 tonnes/cm2 , the permissible maximum crippling load will be (A) 1.288 tonnes (B) 12.88 (C) 128.8 tonnes (D) 288.0
Last Answer : (B) 12.88