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

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 

by

1 Answer

Answer :

(A) M

by

Related questions

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

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

In a cantilever subjected to a concentrated load (W) at the free end and having length =l, Maximum bending moment is (a) Wl at the free end (b) Wl at the fixed end (c) Wl/2 at the fixed end (d) Wl at the free end

Description : In a cantilever subjected to a concentrated load (W) at the free end and having length =l, Maximum bending moment is (a) Wl at the free end (b) Wl at the fixed end (c) Wl/2 at the fixed end (d) Wl at the free end

Last Answer : (b) Wl at the fixed end

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

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

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

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

Maximum bending moment in a S.S. beam having a concentrated load at the centre will be (a) WL (b) WL/2 (c) WL/4 (d) None

Description : Maximum bending moment in a S.S. beam having a concentrated load at the centre will be (a) WL (b) WL/2 (c) WL/4 (d) None

Last Answer : (c) WL/4

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) (B) f = (A/P) + (M/Z) (C) f = (P/A) + (M/Z) (D) f = (P/A) + (M/6Z)

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

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 : 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

A sudden jump anywhere on the Bending moment diagram of a beam is caused by (a) Couple acting at that point (b) Couple acting at some other point (c) Concentrated load at the point (d) Uniformly distributed load or Uniformly varying load on the beam

Description : A sudden jump anywhere on the Bending moment diagram of a beam is caused by (a) Couple acting at that point (b) Couple acting at some other point (c) Concentrated load at the point (d) Uniformly distributed load or Uniformly varying load on the beam

Last Answer : (a) Couple acting at that point

In a simply supported beam, bending moment at the end (a) Is always zero if it does not carry couple at the end (b) Is zero, if the beam has uniformly distributed load only (c) Is zero if the beam has concentrated loads only (d) May or may not be zero

Description : In a simply supported beam, bending moment at the end (a) Is always zero if it does not carry couple at the end (b) Is zero, if the beam has uniformly distributed load only (c) Is zero if the beam has concentrated loads only (d) May or may not be zero

Last Answer : (a) Is always zero if it does not carry couple at the end

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

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

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 : 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 

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

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

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

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 

A concentrated load P acts on a simply supported beam of span L at a distance L/3 from the left support. The bending moment at the point of application of the load is given by (a) PL/3 (b) 2PL/3 (c) PL/9 (d) 2PL/9

Description : A concentrated load P acts on a simply supported beam of span L at a distance L/3 from the left support. The bending moment at the point of application of the load is given by (a) PL/3 (b) 2PL/3 (c) PL/9 (d) 2PL/9

Last Answer : (d) 2PL/9

If L is the effective span of a R.C.C. beam which is subjected to maximum shear qmax at the ends, the distance from either end over which stirrups for the shear, are provided, is (A) (L/2) (1 - 3/qmax) (B) (L/3) (1 - 5/qmax) (C) (L/2) (1 - 5/qmax) (D) (L/2) (1 - 2/qmax)

Description : If L is the effective span of a R.C.C. beam which is subjected to maximum shear qmax at the ends, the distance from either end over which stirrups for the shear, are provided, is (A) (L/2) (1 - 3/qmax) (B) (L/3) (1 - 5/qmax) (C) (L/2) (1 - 5/qmax) (D) (L/2) (1 - 2/qmax)

Last Answer : Answer: Option C

In a cantilever subjected to a combination of concentrated load, uniformly distributed load and uniformly varying load, Maximum bending moment is (a) Where shear force=0 (b) At the free end (c) At the fixed end (d) At the mid-point

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A simply supported beam deflects by 5 mm when it is subjected to a concentrated load of 10 kN at its centre. What will be deflection in a 1/10 model of the beam if the model is subjected to a 1 kN load at its centre? (A) 5 mm (B) 0.5 mm (C) 0.05 mm (D) 0.005 mm

Description : A simply supported beam deflects by 5 mm when it is subjected to a concentrated load of 10 kN at its centre. What will be deflection in a 1/10 model of the beam if the model is subjected to a 1 kN load at its centre? (A) 5 mm (B) 0.5 mm (C) 0.05 mm (D) 0.005 mm

Last Answer : (A) 5 mm

shaft subjected to a bending moment M and a torque T, experiences (A) Maximum bending stress = 32M d 3 (B) Maximum shear stress = 16 T d 3 (C) Both (a) and (b) (D) Neither (a) nor (b)

Description :  shaft subjected to a bending moment M and a torque T, experiences  (A) Maximum bending stress = 32M d 3 (B) Maximum shear stress = 16 T d 3 (C) Both (a) and (b)  (D) Neither (a) nor (b)

Last Answer : (C) Both (a) and (b) 

A simply supported beam AB is subjected to a concentrated load at C, the centre of the span. The area of the SF diagram from A to C will give a) BM at C b) Load at S c) SF at C d)Difference between BM values at A and C

Description : A simply supported beam AB is subjected to a concentrated load at C, the centre of the span. The area of the SF diagram from A to C will give a) BM at C b) Load at S c) SF at C d)Difference between BM values at A and C

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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

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A member subjected to couple produces rotational motion about its longitudinal axis called as ________ a. torsion b. twisting moment c. both a. and b. d. bending moment

Description : A member subjected to couple produces rotational motion about its longitudinal axis called as ________ a. torsion b. twisting moment c. both a. and b. d. bending moment

Last Answer : c. both a. and b.

To ensure that the hogging bending moment at two points of suspension of a pile of length L equals the sagging moment at its centre, the distances of the points of suspension from either end, is (A) 0.107 L (B) 0.207 L (C) 0.307 L (D) 0.407 L

Description : To ensure that the hogging bending moment at two points of suspension of a pile of length L equals the sagging moment at its centre, the distances of the points of suspension from either end, is (A) 0.107 L (B) 0.207 L (C) 0.307 L (D) 0.407 L

Last Answer : Answer: Option B

A uniform girder simply supported at its ends is subjected to a uniformly distributed load over its entire length and is propped at the centre so as to neutralise the deflection. The net B.M. at the centre will be (A) WL (B) WL/8 (C) WL/24 (D) WL/32

Description : A uniform girder simply supported at its ends is subjected to a uniformly distributed load over its entire length and is propped at the centre so as to neutralise the deflection. The net B.M. at the centre will be (A) WL (B) WL/8 (C) WL/24 (D) WL/32

Last Answer : (D) WL/32

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

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

A shaft is subjected to bending moment M and a torque T simultaneously. The ratio of the maximum bending stress to maximum shear stress developed in the shaft, is (A) M/T (B) T/M (C) 2M/T (D) 2T/M

Description : A shaft is subjected to bending moment M and a torque T simultaneously. The ratio of the  maximum bending stress to maximum shear stress developed in the shaft, is  (A) M/T (B) T/M (C) 2M/T (D) 2T/M

Last Answer : (C) 2M/T

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

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

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

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

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If the length of a wall on either side of a lintel opening is at least half of its effective span L, the load W carried by the lintel is equivalent to the weight of brickwork contained in an equilateral triangle, producing a maximum bending moment (A) WL/2 (B) WL/4 (C) WL/6 (D) WL/8

Description : If the length of a wall on either side of a lintel opening is at least half of its effective span L, the load W carried by the lintel is equivalent to the weight of brickwork contained in an equilateral triangle, producing a maximum bending moment (A) WL/2 (B) WL/4 (C) WL/6 (D) WL/8

Last Answer : Answer: Option C

A beam fixed at both ends with a central load W in the middle will have zero bending moment at a.one place b.two places c.no where d.three places e.107 dynes

Description : A beam fixed at both ends with a central load W in the middle will have zero bending moment at a.one place b.two places c.no where d.three places e.107 dynes

Last Answer : b. two places

In case of a cantilever beam having concentrated loads, bending moment variation will be (a) Linear (b) Parabolic (c) Cubic (d) None

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

For any part of a beam between two concentrated load, Bending moment diagram is a (a) Horizontal straight line (b) Vertical straight line (c) Line inclined to x-axis (d) Parabola

Description : For any part of a beam between two concentrated load, Bending moment diagram is a (a) Horizontal straight line (b) Vertical straight line (c) Line inclined to x-axis (d) Parabola

Last Answer : (c) Line inclined to x-axis

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

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

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 supported beam fixed at hub and rim and carrying uniformly distributed load 3. a cantilever hub fixed at the rim and subjected to tangential force at the rim 4. a fixed beam fixed at hub and rim and carrying uniformly distributed load

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

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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 supported beam fixed at hub and rim and carrying uniformly distributed load (C) A cantilever beam fixed at the hub and subjected to tangential force at the rim (D) A fixed beam fixed at hub and rim and carrying uniformly distributed load

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In continuous beam, the intermediate beams are subjected to a. some bending moment b. no bending moment c. no slope d.no deflection

Description : In continuous beam, the intermediate beams are subjected to a. some bending moment b. no bending moment c. no slope d.no deflection

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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

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

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

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A close coil helical spring when subjected to a moment M having its axis along the axis of the helix (A) It is subjected to pure bending (B) Its mean diameter will decrease (C) Its number of coils will increase (D) All the above

Description : A close coil helical spring when subjected to a moment M having its axis along the axis of the helix  (A) It is subjected to pure bending  (B) Its mean diameter will decrease  (C) Its number of coils will increase  (D) All the above 

Last Answer : (A) It is subjected to pure bending 

Torque and bending moment of 100 kN.m and 200 kN.m acts on a shaft which has external diameter twice of internal diameter. What is the external diameter of the shaft which is subjected to a maximum shear stress of 90 N/mm2? a. 116.5 mm b. 233.025 mm c. 587.1 mm d. 900 mm

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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

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A steel bar 20 mm in diameter simply-supported at its ends over a total span of 40 cm carries a load at its centre. If the maximum stress induced in the bar is limited to N/mm2, the bending strain energy stored in the bar, is (A) 411 N mm (B) 511 N mm (C) 611 N mm (D) 711 N mm

Description : A steel bar 20 mm in diameter simply-supported at its ends over a total span of 40 cm carries a  load at its centre. If the maximum stress induced in the bar is limited to N/mm2, the bending  strain energy stored in the ... (A) 411 N mm  (B) 511 N mm  (C) 611 N mm  (D) 711 N mm 

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A fixed beam with central point load undergoes a slight settlement at one end. Select suitable answer from the following: (a) Moment induced at both ends will be same (b) Moment induced at the end that has undergone settlement will be maximum (c) Moment induced will be maximum at the end having no settlement (d) Zero moment at the end that has settled.

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Maximum bending moment in a cantilever beam having a UDL over entire length will be (a) wL2/2 (b) wL2/4 (c) wL2/8 (d) None

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Maximum bending moment in a S.S. beam having a UDL over entire length will be (a) wL2/2 (b) wL2/4 (c) wL2/8 (d) None

Description : Maximum bending moment in a S.S. beam having a UDL over entire length will be (a) wL2/2 (b) wL2/4 (c) wL2/8 (d) None

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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

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 

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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

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

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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

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

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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

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 

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A pile of length carrying a uniformly distributed load per metre length is suspended at the centre and from other two points 0.15 L from either end ; the maximum hogging moment will be (A) WL²/15 (B) WL²/30 (C) WL²/60 (D) WL²/90

Description : A pile of length carrying a uniformly distributed load per metre length is suspended at the centre and from other two points 0.15 L from either end ; the maximum hogging moment will be (A) WL²/15 (B) WL²/30 (C) WL²/60 (D) WL²/90

Last Answer : Answer: Option D

What is the distance away from midspan of a plastic hinge if developing in a simply supported beam of rectangular cross-section and span 6 m, subjected to a point load at the centre? (a) Zero (b) 1 m (c) 2 m (d) 3 m

Description : What is the distance away from midspan of a plastic hinge if developing in a simply supported beam of rectangular cross-section and span 6 m, subjected to a point load at the centre? (a) Zero (b) 1 m (c) 2 m (d) 3 m

Last Answer : (a) Zero