As the percentage of steel in a beam increases, the depth of neutral axis (a) Increases (b) Decreases (c) Equal to (d) None of these

As the percentage of steel in a beam increases, the depth of neutral axis
(a) Increases
(b) Decreases
(c) Equal to
(d) None of these
by

1 Answer

Answer :

(a) Increases
by

Related questions

As the percentage of steel increases (A) Depth of neutral axis decreases (B) Depth of neutral axis increases (C) Lever arm increases (D) Lever arm decreases

Description : As the percentage of steel increases (A) Depth of neutral axis decreases (B) Depth of neutral axis increases (C) Lever arm increases (D) Lever arm decreases

Last Answer : Answer: Option B

As the percentage of steel increases [ A ] Depth of neutral axis decreases [ B ] Depth of neutral axis increases [ C ] Lever arm increases [ D ] None of the above are correct

Description : As the percentage of steel increases [ A ] Depth of neutral axis decreases [ B ] Depth of neutral axis increases [ C ] Lever arm increases [ D ] None of the above are correct

Last Answer : [ B ] Depth of neutral axis increases

If the depth of actual neutral axis of a doubly reinforced beam (A) Is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier (B) Is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier (C) Is equal to the depth of critical neutral axis; the concrete and steel attain their maximum stresses simultaneously (D) All the above

Description : If the depth of actual neutral axis of a doubly reinforced beam (A) Is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier (B) Is less ... critical neutral axis; the concrete and steel attain their maximum stresses simultaneously (D) All the above

Last Answer : Answer: Option D

A singly reinforced concrete beam of 25 cm width and 70 cm effective depth is provided with 18.75 cm2 steel. If the modular ratio (m) is 15, the depth of the neutral axis, is (A) 20 cm (B) 25 cm (C) 30 cm (D) 35 cm

Description : A singly reinforced concrete beam of 25 cm width and 70 cm effective depth is provided with 18.75 cm2 steel. If the modular ratio (m) is 15, the depth of the neutral axis, is (A) 20 cm (B) 25 cm (C) 30 cm (D) 35 cm

Last Answer : Answer: Option C

If the modular ratio is , steel ratio is and overall depth of a beam is , the depth of the critical neutral axis of the beam, is (A) [m/(m - r)] d (B) [m/(m + r)] d (C) [(m + r)/m] d (D) [(r - m)/m] d

Description : If the modular ratio is , steel ratio is and overall depth of a beam is , the depth of the critical neutral axis of the beam, is (A) [m/(m - r)] d (B) [m/(m + r)] d (C) [(m + r)/m] d (D) [(r - m)/m] d

Last Answer : Answer: Option B

The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm2 and 250 kg/cm2 respectively. If m = 15, the depth of its neutral axis is (A) 20 cm (B) 25 cm (C) 30 cm (D) 35 cm

Description : The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm2 and 250 kg/cm2 respectively. If m = 15, the depth of its neutral axis is (A) 20 cm (B) 25 cm (C) 30 cm (D) 35 cm

Last Answer : Answer: Option C

The effective depth of a singly reinforced rectangular beam is 300mm. the section is over-reinforced and the neutral axis is 120mm below the top. If the maximum stress attained by concrete is 5N/mn2 and the modular ratio is 18, then the stress developed in the steel will (a) 130N/mm2 (b) 135N/mm2 (c) 160N/mm2 (d) 180N/mm2

Description : The effective depth of a singly reinforced rectangular beam is 300mm. the section is over-reinforced and the neutral axis is 120mm below the top. If the maximum stress attained by concrete is 5N/mn2 and the modular ratio ... in the steel will (a) 130N/mm2 (b) 135N/mm2 (c) 160N/mm2 (d) 180N/mm2

Last Answer : (b) 135N/mm2

Diagonal tension in a beam (A) Is maximum at neutral axis (B) Decreases below the neutral axis and increases above the neutral axis (C) Increases below the neutral axis and decreases above the neutral axis (D) Remains same

Description : Diagonal tension in a beam (A) Is maximum at neutral axis (B) Decreases below the neutral axis and increases above the neutral axis (C) Increases below the neutral axis and decreases above the neutral axis (D) Remains same

Last Answer : Answer: Option C

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

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 

The maximum compressive stress at the top of a beam is 1600 kg/cm2 and the corresponding tensile stress at its bottom is 400 kg/cm2 . If the depth of the beam is 10 cm, the neutral axis from the top, is(A) 2 cm (B) 4 cm (C) 6 cm (D) 8 cm

Description : The maximum compressive stress at the top of a beam is 1600 kg/cm2 and the corresponding tensile stress at its bottom is 400 kg/cm2 . If the depth of the beam is 10 cm, the neutral axis from the top, is (A) 2 cm (B) 4 cm (C) 6 cm (D) 8 cm

Last Answer : (D) 8 cm

In a singly reinforced beam, the effective depth is measured from its compression edge to (A) Tensile edge (B) Tensile reinforcement (C) Neutral axis of the beam (D) Longitudinal central axis

Description : In a singly reinforced beam, the effective depth is measured from its compression edge to (A) Tensile edge (B) Tensile reinforcement (C) Neutral axis of the beam (D) Longitudinal central axis

Last Answer : Answer: Option B

If d and n are the effective depth and depth of the neutral axis respectively of a singly reinforced beam, the lever arm of the beam, is (A) d (B) n (C) d + n/3 (D) d - n/3

Description : If d and n are the effective depth and depth of the neutral axis respectively of a singly reinforced beam, the lever arm of the beam, is (A) d (B) n (C) d + n/3 (D) d - n/3

Last Answer : Answer: Option D

In a doubly-reinforced beam if and is the effective depth and is depth of critical neutral axis, the following relationship holds good (A) mc/t = n/(d - n) (B) (m + c)/t = n/(d + n) (C) (t + c)/n = (d + n)/nD) mc/t = (d - n)/t

Description : In a doubly-reinforced beam if and is the effective depth and is depth of critical neutral axis, the following relationship holds good (A) mc/t = n/(d - n) (B) (m + c)/t = n/(d + n) (C) (t + c)/n = (d + n)/n D) mc/t = (d - n)/t

Last Answer : Answer: Option A

A singly reinforced beam has breadth b, effective depth d, depth of neutral axis n and critical neutral axis n1. If fc and ft are permissible compressive and tensile stresses, the moment to resistance of the beam, is (A) bn (fc /2) (d - n/3) (B) Atft (d - n/3) (C) ½ n1 (1 - n1/3) cbd² (D) All the above

Description : A singly reinforced beam has breadth b, effective depth d, depth of neutral axis n and critical neutral axis n1. If fc and ft are permissible compressive and tensile stresses, the moment to resistance of the beam, is (A) bn (fc ... (B) Atft (d - n/3) (C) ½ n1 (1 - n1/3) cbd² (D) All the above

Last Answer : Answer: Option D

If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, then the beam is called (A) Balanced beam (B) Under-reinforced beam (C) Over-reinforced beam (D) None of the above

Description : If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, then the beam is called (A) Balanced beam (B) Under-reinforced beam (C) Over-reinforced beam (D) None of the above

Last Answer : Option C

In a singly reinforced beam, the effective depth is measured form the compression edge to the (a) Tensile edge (b) Centre of tensile reinforcement (c) Neutral axis of the beam (d) All of the above

Description : In a singly reinforced beam, the effective depth is measured form the compression edge to the (a) Tensile edge (b) Centre of tensile reinforcement (c) Neutral axis of the beam (d) All of the above

Last Answer : (b) Centre of tensile reinforcement

If the permissible stress in steel in tension is 140 N/mm², then the depth of neutral axis for a singly reinforced rectangular balanced section will be (A) 0.35 d (B) 0.40 d (C) 0.45 d (D) Dependent on grade of concrete also

Description : If the permissible stress in steel in tension is 140 N/mm², then the depth of neutral axis for a singly reinforced rectangular balanced section will be (A) 0.35 d (B) 0.40 d (C) 0.45 d (D) Dependent on grade of concrete also

Last Answer : Answer: Option B

Regarding the working stress design of under reinforced concrete section, (a) The neutral axis depth will be greater than that of a balanced section. (b) The stress in steel intension will reach its maximum permissible value first. (c) The moment of resistance will be less than that of the balanced section. (d) The concrete on the tension side is also be considered for calculating the moment of resistance of the section.

Description : Regarding the working stress design of under reinforced concrete section, (a) The neutral axis depth will be greater than that of a balanced section. (b) The stress in steel intension will reach ... on the tension side is also be considered for calculating the moment of resistance of the section.

Last Answer : both b&c

If the depth of actual neutral axis is greater than the depth of critical neutral axis, then [ A ] Concrete attains its permissible stress earlier [ B ] Steel attains its permissible stress earlier [ C ] Both concrete and steel reaches its permissible stresses simultaneously [ D ] None of the above

Description : If the depth of actual neutral axis is greater than the depth of critical neutral axis, then [ A ] Concrete attains its permissible stress earlier [ B ] Steel attains its permissible stress earlier [ C ] Both concrete and steel reaches its permissible stresses simultaneously [ D ] None of the above

Last Answer : [ A ] Concrete attains its permissible stress earlier

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 entire section of the beam becomes fully plastic, is called plastic moment (C) In a fully plastic stage of the beam, the neutral axis divides the section in two sections of equal area (D) All the above

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 

A T-beam behaves as a rectangular beam of a width equal to its flange if its neutral axis (A) Remains within the flange (B) Remains below the slab (C) Coincides the geometrical centre of the beam (D) None of these

Description : A T-beam behaves as a rectangular beam of a width equal to its flange if its neutral axis (A) Remains within the flange (B) Remains below the slab (C) Coincides the geometrical centre of the beam (D) None of these

Last Answer : Answer: Option A

A reinforced concrete beam will crack if tensile stress set up in the concrete below the neutral axis is (a) More than the permissible stress (b) Less than the permissible stress (c) Equal to the permissible stress (d) All the above.

Description : A reinforced concrete beam will crack if tensile stress set up in the concrete below the neutral axis is (a) More than the permissible stress (b) Less than the permissible stress (c) Equal to the permissible stress (d) All the above.

Last Answer : (a) More than the permissible stress

The depth of neutral axis for a balanced section is --------- the depth of critical neutral axis [ A ] equal [ B ] always greater than [ C ] always less than [ D ] may be sometimes greater than

Description : The depth of neutral axis for a balanced section is --------- the depth of critical neutral axis [ A ] equal [ B ] always greater than [ C ] always less than [ D ] may be sometimes greater than

Last Answer : [ A ] equal

The depth of neutral axis for over reinforced section is ----------- the depth of critical neutral axis [ A ] Equal to [ B ] Greater than [ C ] Less than [ D ] None of the above

Description : The depth of neutral axis for over reinforced section is ----------- the depth of critical neutral axis [ A ] Equal to [ B ] Greater than [ C ] Less than [ D ] None of the above

Last Answer : [ B ] Greater than

The depth of neutral axis for under reinforced section is --------- the depth of critical neutral axis [ A ] Equal to [ B ] Greater than [ C ] Less than [ D ] None of the above

Description : The depth of neutral axis for under reinforced section is --------- the depth of critical neutral axis [ A ] Equal to [ B ] Greater than [ C ] Less than [ D ] None of the above

Last Answer : [ C ] Less than

The Percentage of steel in T-beam mainly based on [ A ] Flange width [ B ] Rib width [ C ] Flange depth [ D ] None of the above.

Description : The Percentage of steel in T-beam mainly based on [ A ] Flange width [ B ] Rib width [ C ] Flange depth [ D ] None of the above.

Last Answer : [ B ] Rib width

The neutral axis of a beam cross-section must (A) Pass through the centroid of the section (B) Be equidistant from the top of bottom films (C) Be an axis of symmetry of the section (D) None of these

Description : The neutral axis of a beam cross-section must (A) Pass through the centroid of the section (B) Be equidistant from the top of bottom films (C) Be an axis of symmetry of the section (D) None of these

Last Answer : (A) Pass through the centroid of the section

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

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

Along the neutral axis of a simply supported beam (A) Fibres do not undergo strain (B) Fibres undergo minimum strain (C) Fibres undergo maximum strain (D) None of these

Description : Along the neutral axis of a simply supported beam  (A) Fibres do not undergo strain  (B) Fibres undergo minimum strain  (C) Fibres undergo maximum strain  (D) None of these

Last Answer : (A) Fibres do not undergo strain 

The shear force on a simply supported beam is proportional to (A) Displacement of the neutral axis (B) Sum of the forces (C) Sum of the transverse forces (D) Algebraic sum of the transverse forces of the section

Description : The shear force on a simply supported beam is proportional to (A) Displacement of the neutral axis (B) Sum of the forces (C) Sum of the transverse forces (D) Algebraic sum of the transverse forces of the section

Last Answer : (D) Algebraic sum of the transverse forces of the section

Pick up the incorrect statement from the following. The intensity of horizontal shear stress at the elemental part of a beam section, is directly proportional to (A) Shear force (B) Area of the section (C) Distance of the C.G. of the area from its neutral axis (D) Moment of the beam section about its neutral axis

Description : Pick up the incorrect statement from the following. The intensity of horizontal shear stress at the elemental part of a beam section, is directly proportional to (A) Shear force (B) Area of the section ... . of the area from its neutral axis (D) Moment of the beam section about its neutral axis

Last Answer : Answer: Option D

The neutral axis of a T-beam exists (A) Within the flange (B) At the bottom edge of the slab (C) Below the slab (D) All the above

Description : The neutral axis of a T-beam exists (A) Within the flange (B) At the bottom edge of the slab (C) Below the slab (D) All the above

Last Answer : Answer: Option D

An increase in temperature on the top fibre of a simply supported beam will cause (a) Downward deflection (b) Upward deflection (c) No deflection (d) Angular rotation about neutral axis

Description : An increase in temperature on the top fibre of a simply supported beam will cause (a) Downward deflection (b) Upward deflection (c) No deflection (d) Angular rotation about neutral axis

Last Answer : Upward deflection

The neutral axis in a T-beam section falls (a) Within the flange (b) Outside the flange (c) Either (a) or (b) (d) All the above

Description : The neutral axis in a T-beam section falls (a) Within the flange (b) Outside the flange (c) Either (a) or (b) (d) All the above

Last Answer : (c) Either (a) or (b)

The section of the beam having greater width at the top in comparison to the width below neutral axis is known as. (a) Critical section (b) T-section (c) L-section (d) None of these

Description : The section of the beam having greater width at the top in comparison to the width below neutral axis is known as. (a) Critical section (b) T-section (c) L-section (d) None of these

Last Answer : (b) T-section

For a reinforced concrete beam section, the shape of shear stress diagram is (a) Parabolic over the whole section with maximum value at the neutral axis. (b) Parabolic above the neutral axis and rectangular below the neutral axis. (c) Linearly varying as the distance form the N.A. (d) All the above.

Description : For a reinforced concrete beam section, the shape of shear stress diagram is (a) Parabolic over the whole section with maximum value at the neutral axis. (b) Parabolic above the neutral axis and rectangular below the neutral axis. (c) Linearly varying as the distance form the N.A. (d) All the above.

Last Answer : (b) Parabolic above the neutral axis and rectangular below the neutral axis.

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

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

If the load on beam is increased, the tensile stress sin the concrete below the neutral axis will (a) Increase (b) Decrease (c) Remain unchanged (d) None of these

Description : If the load on beam is increased, the tensile stress sin the concrete below the neutral axis will (a) Increase (b) Decrease (c) Remain unchanged (d) None of these

Last Answer : (a) Increase

In case of a cantilever beam , the tensile zone is D. (a) Above the neutral axis (b) Below the neutralaxis (c) At the neutral axis (d) All the above

Description : In case of a cantilever beam , the tensile zone is D. (a) Above the neutral axis (b) Below the neutralaxis (c) At the neutral axis (d) All the above

Last Answer : (a) Above the neutral axis

In a simply supported reinforced concrete beam, the reinforcement is placed. (a) Above the neutral axis (b) Below the neutral axis (c) At the neutral axis (d) None of these

Description : In a simply supported reinforced concrete beam, the reinforcement is placed. (a) Above the neutral axis (b) Below the neutral axis (c) At the neutral axis (d) None of these

Last Answer : (b) Below the neutral axis

If M, I, R, E, F, and Y are the bending moment, moment of inertia, radius of curvature, modulus of elasticity stress and the depth of the neutral axis at section, then (A) M/I = R/E = F/Y (B) I/M = R/E = F/Y (C) M/I = E/R = E/Y (D) M/I = E/R = Y/F

Description : If M, I, R, E, F, and Y are the bending moment, moment of inertia, radius of curvature, modulus of  elasticity stress and the depth of the neutral axis at section, then  (A) M/I = R/E = F/Y (B) I/M = R/E = F/Y (C) M/I = E/R = E/Y (D) M/I = E/R = Y/F

Last Answer : (C) M/I = E/R = E/Y

If is the shear force at a section of an I-joist, having web depth and moment of inertia about its neutral axis, the difference between the maximum and mean shear stresses in the web is, (A) Sd²/8I (B) Sd²/12I (C) Sd²/16I(D) Sd²/24I

Description : If is the shear force at a section of an I-joist, having web depth and moment of inertia about its neutral axis, the difference between the maximum and mean shear stresses in the web is, (A) Sd²/8I (B) Sd²/12I (C) Sd²/16I (D) Sd²/24I

Last Answer : (D) Sd²/24I

With usual notations the depth of the neutral axis of a balanced section, is given by (A) mc/t = (d - n)/n (B) t/mc = (d - n)/n (C) t/mc = (d + n)/n (D) mc/t = n/(d - n)

Description : With usual notations the depth of the neutral axis of a balanced section, is given by (A) mc/t = (d - n)/n (B) t/mc = (d - n)/n (C) t/mc = (d + n)/n (D) mc/t = n/(d - n)

Last Answer : Answer: Option D

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (A) 0.367 xu (B) 0.416 xu (C) 0.446 xu (D) 0.573 xu Where xu is the depth of neutral axis at the limit state of collapse

Description : The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (A) 0.367 xu (B) 0.416 xu (C) 0.446 xu (D) 0.573 xu Where xu is the depth of neutral axis at the limit state of collapse

Last Answer : Answer: Option B

In limit state design of concrete for flexure, the area of stress block is taken as (a) 0.530 fck. Xu (b) 0.446 fck . Xu ( c) 0.420 fck .Xu (d) 0.360 fck . Xu Where fck is characteristic compressive strength of concrete and Xu is the depth of neutral axis from top.

Description : In limit state design of concrete for flexure, the area of stress block is taken as (a) 0.530 fck. Xu (b) 0.446 fck . Xu ( c) 0.420 fck .Xu (d) 0.360 fck . Xu Where fck is characteristic compressive strength of concrete and Xu is the depth of neutral axis from top.

Last Answer : (d) 0.360 fck . Xu

The position of the neutral axis in reinforced brick masonry is independent of the loading and is at a depth of

Description : The position of the neutral axis in reinforced brick masonry is independent of the loading and is at a depth of

Last Answer : (a) One-third of the effective depth

If the depth of actual axis in a beam is more than the depth of critical axis, then the beam is called (a) Over reinforced beam (b) Under-reinforced beam (c) Balanced beam (d) Deep beam

Description : If the depth of actual axis in a beam is more than the depth of critical axis, then the beam is called (a) Over reinforced beam (b) Under-reinforced beam (c) Balanced beam (d) Deep beam

Last Answer : (a) Over reinforced beam

If permissible working stresses in steel and concrete are respectively 1400 kg/cm2 and 80 kg/cm2 and modular ratio is 18, in a beam reinforced in tension side and of width 30 cm and having effective depth 46 cm, the lever arms of the section, is (A) 37 cm (B) 38 cm (C) 39 cm (D) 40 cm

Description : If permissible working stresses in steel and concrete are respectively 1400 kg/cm2 and 80 kg/cm2 and modular ratio is 18, in a beam reinforced in tension side and of width 30 cm and having effective depth 46 cm, the lever arms of the section, is (A) 37 cm (B) 38 cm (C) 39 cm (D) 40 cm

Last Answer : Answer: Option D

A simply supported beam 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm2 , the area of steel required, is (A) 14 cm(B) 15 cm2(C) 16 cm2(D) 17 cm

Description : A simply supported beam 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm2 ... area of steel required, is (A) 14 cm (B) 15 cm2 (C) 16 cm2 (D) 17 cm

Last Answer : Answer: Option C

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 proportional to the distance of the fibre from the load carrying end d.the stress intensity in any fibre is uniform e.the nature of stress in any fibre is identical

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