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

1 Answer

Answer :

Answer: Option B

Related questions

Description : The bending moment is maximum on a section where shearing force  (A) Is maximum  (B) Is minimum  (C) Is equal  (D) Changes sign 

Last Answer : (D) Changes sign 

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 combined footing for two columns carrying unequal loads, the maximum hogging bending moment occurs at (A) Less loaded column (B) More loaded column (C) A point of the maximum shear force (D) A point of zero shear force

Last Answer : Answer: Option D

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 : 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 : 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)

Last Answer : Answer: Option C

Description : Point of contra-flexure is a (a) Point where Shear force is maximum (b) Point where Bending moment is maximum (c) Point where Bending moment is zero (d) Point where Bending moment=0 but also changes sign from positive to negative

Last Answer : (d) Point where Bending moment=0 but also changes sign from positive to negative

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 : 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 : Pick up the correct statement from the following:  (A) In a loaded beam, the moment at which the first yield occurs is called yield moment (B) In a loaded beam, the moment at which the ... beam, the neutral axis divides the section in two sections of  equal area  (D) All the above 

Last Answer : (D) All the above 

Description : The expression EI d4y/dx4 at a section of a member represents a. Shearing force b. rate of loading c. bending moment d.slope.

Last Answer : b. rate of loading

Description : .The expression EI d3y/dx3 at a section of a member represents a.Shearing force b.rate of loading c.bending moment d.slope.

Last Answer : a.Shearing force

Description : The expression EI d2y/dx2 at a section of a member represents a. Shearing force b.rate of loading c.bending moment d.slope.

Last Answer : c.bending moment

Description : In a simply supported beam loaded with U.D.L over the whole section, the bending stress is …………. at top and ………….. at bottom. (a) Compressive, tensile (b) Tensile, compressive (c) Tensile, zero (d) Compressive, zero

Last Answer : (a) Compressive, tensile

Description : In case of a cantilever beam, bending moment at the fixed end will be (a) Maximum (b) Minimum (c) Zero (d) None

Last Answer : (a) Maximum

Description : In case of a cantilever beam, bending moment at the free end will be (a) Maximum (b) Minimum (c) Zero (d) None

Last Answer : c) Zero

Description : At the supports of a simply supported beam, bending moment will be (a) Maximum (b) Minimum (c) Zero (d) None

Last Answer : (c) Zero

Description : In a mid point loaded fixed beam,the free bending moment diagram is a a.square b.rectangle c.triangle d.trapezium

Last Answer : c.triangle

Description : In a mid point loaded fixed beam,the fixed bending moment diagram is a a.square b.rectangle c.triangle d.trapezium

Last Answer : b.rectangle

Description : In an off centre point loaded fixed beam the free bending moment diagram is a a.square b.rectangle c.triangle d.trapezium

Last Answer : c.triangle

Description : The slope of shear force line at any section of the beam is also called (a) Bending moment at that section (b) Rate of loading at that section (c) Maximum Shear force (d) Maximum bending moment

Last Answer : (b) Rate of loading at that section

Description : If a shaft is simultaneously subjected to a toque T and a bending moment M, the ratio of maximum bending stress and maximum shearing stress is (A) M/T (B) T/M (C) 2M/T (D) 2T/M

Last Answer : (C) 2M/T

Description : A beam is designed on the basis of a. Maximum bending moment b. Minimum shear force. c.Maximum bending moment as well as for maximum shear force d. None.

Last Answer : c.Maximum bending moment as well as for maximum shear force

Description : The maximum bending moment due to a moving load on a simply supported beam, occurs (A) At the mid span (B) At the supports (C) Under the load (D) Anywhere on the beam

Last Answer : (C) Under the load

Description : In an off centrepoint loaded fixed beam the fixed bending moment diagram is a a.square b.rectangle c.triangle d.trapezium

Last Answer : d.trapezium

Description : When a uniformly distributed load, longer than the span of the girder, moves from left to right, then the maximum bending moment at mid section of span occurs when the uniformly distributed load occupies (A) Less ... (B) Whole of left half span (C) More than the left half span (D) Whole span

Last Answer : (D) Whole span

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 : If the positive and negative shear force diagram areas are not equal, it can be concluded that a.shear force diagram has been wrongly drawn b.there is at least one couple acting on the beam c.107 dynes d.there are at least two maxima for bending moment e.bending moment does not change sign

Last Answer : b. there is at least one couple acting on the beam

Description : The concavity produced on the beam section about the centre line when downward force acts on it is called as (a) Hogging or positive bending moment (b) Hogging or negative bending moment (c) Sagging or positive bending moment (d) Sagging or negative bending moment

Last Answer : (b) Hogging or negative bending moment

Description : A rectangular beam 20 cm wide is subjected to a maximum shearing force of 10,000 kg, the corresponding maximum shearing stress being 30 kg/cm2 . The depth of the beam is (A) 15 cm (B) 20 cm (C) 25 cm (D) 30 cm

Last Answer : (C) 25 cm

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 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 

Last Answer : (A) A circular arc 

Description : The amount of reinforcement for main bars in a slab, is based upon (A) Minimum bending moment (B) Maximum bending moment (C) Maximum shear force (D) Minimum shear force

Last Answer : Answer: Option B

Description : The amount of reinforcement for main bars in a slab, is based upon (a) Maximum bending moment (b) Minimum bending moment (c) Maximum shear force (d) Minimum shear force

Last Answer : (a) Maximum bending moment

Description : The bending moment at the fixed end of a cantilever beam is (a) Maximum (b) Minimum (c) Wl/2 (d) Wl

Last Answer : (a) Maximum

Description : When a rectangular beam is loaded transversely, the maximum compressive stress develops on (A) Bottom fibre (B) Top fibre (C) Neutral axis (D) Every cross-section

Last Answer : (B) Top fibre

Description : A diagram which shows the variations of the axial load for all sections of the span of a beam, is called (A) Bending moment diagram (B) Shear force diagram (C) Thrust diagram (D) Stress diagram

Last Answer : Answer: Option C

Description : In a beam the local bond stress Sb, is equal to (A) Shear force/(Leaver arm Total perimeter of reinforcement) (B) Total perimeter of reinforcement/(Leaver arm Shear force) (C) ... force Total perimeter of reinforcement) (D) Leaver arm/(Bending moment Total perimeter of reinforcement)

Last Answer : Answer: Option A

Description : For a certain set of external loads, concordant profile in a prestressed beam represents to some scale the (a) Influence line diagram (b) Shear force diagram (c) Bending moment diagram (d) Williot-Mohr diagram

Last Answer : (c) Bending moment diagram

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 : A simply supported beam carries two equal concentrated loads W at distances L/3 from either support. The maximum bending moment (A) WL/3 (B) WL/4 (C) 5WL/4 (D) 3WL/12

Last Answer : (A) WL/3

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 : A simply supported beam of span carries a uniformly distributed load . The maximum bending moment is (A) WL/2 (B) WL/4 (C) WL/8 (D) WL/12

Last Answer : (C) WL/8

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 : For a simply supported beam with a central load, the bending moment is  (A) Least at the centre  (B) Least at the supports  (C) Maximum at the supports  (D) Maximum at the centre

Last Answer : (D) Maximum at the centre

Description : A simply supported beam of span L carries a concentrated load W at its mid-span. The maximum  bending moment M is  (A) WL/2  (B) WL/4  (C) WL/8  (D) WL/12

Last Answer : (B) WL/4

Description : The point of contraflexure occurs in (A) Cantilever beams only (B) Continuous beams only (C) Over hanging beams only (D) All types of beams

Last Answer : (C) Over hanging beams only

Description : Select the incorrect statement from the following In eccentrically loaded columns, [ A ] The tensile strength of concrete is ignored [ B ] Design stress - strain curve for steel in compression is the ... different points in the section will be same [ D ] Plane section remain plane even after bending

Last Answer : [ C ] The strain at different points in the section will be same

Description : At any point of a beam, the section modulus may be obtained by dividing the moment of inertia of  the section by  (A) Depth of the section  (B) Depth of the neutral axis  (C) Maximum tensile stress at the section  (D) Maximum compressive stress at the section

Last Answer : (B) Depth of the neutral axis