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Q1. | If the section modulus of a beam is increased, the bending stress in the beam will. |

A. | not change [Wrong Answer] |

B. | increase [Wrong Answer] |

C. | decrease [Correct Answer] |

D. | None of these [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ In a thick cylindrical shell subjected to an internal pressure (

*p*), the radial stress across the thickness of the cylinder is.

maximum at the outer surface and minimum at the inner surface

maximum at the inner surface and minimum at the outer surface

maximum at the outer surface and zero at the inner surface

maximum at the inner surface arid zero at the outer surface

⇒ The energy absorbed in a body, when it is strained within the elastic limits, is known as

strain energy

resilience

proof resilience

modulus of resilience

⇒ The maximum diameter of the hole that can be punched from a plate of maximum shear stress 1/4

^{th}of its maximum crushing stress of punch, is equal to (where

*t*= Thickness of the plate)

t

2t

4t

8t

⇒ If a material expands freely due to heating it will develop

thermal stresses

tensile stress

bending

compressive stress

⇒ The value of shear stress which is induced in the shaft due to the applied couple varies

from maximum at the centre to zero at the circumference

from zero at the centre to maximum at the circumference

from maximum at the centre to mini-mum at the cricumference

from minimum at the centre to maxi-mum at the circumference

⇒ The force acting along the circumference will cause stress in the walls in a direction normal to the longitudinal axis of cylinder; this stress is called

longitudinal stress

hoop stress

yeiled stress

ultimate stress

⇒ A thin mild steel wire is loaded by adding loads in equal increments till it breaks. The extensions noted with increasing loads will behave as under

uniform throughout

increase uniformly

first increase and then decrease

increase uniformly first and then in-crease rapidly

⇒ The buckling load for a given column depends upon

area of cross-section of the column

length and least radius of gyration of the column

modulus of elasticity for the material of the column

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⇒ The total elongation produced in a bar of uniform section hanging vertically downwards due to its own weight is equal to that produced by a weight

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half the weight of bar applied at lower end

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one-fourth of weight of bar applied at lower end

⇒ The maximum shear stress in a thin spherical shell subjected to an internal pressure (

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Yes

No

Minimum

None of these

⇒ According to Euler's column theory, the crippling load of a column is given by

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^{2}

*EI*/

*Cl*

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1

2

⇒ The unit of Young's modulus is same as that of stress.

True

False

Maximum

Minimum

⇒ The section modulus of a rectangular section about an axis through its C.G., is.

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bd2/2

bd2/6

⇒ The strain energy stored in a body due to suddenly applied load compared to when it is applied gradually is

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four times

eight times

⇒ Factor of safety is defined as the ratio of

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⇒ Which of the following materials is most elastic

rubber

plastic

brass

steel

⇒ The ductility of a material __________ with the increase in percentage reduction in area of a specimen under tensile test.

increases

decreases

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⇒ The stress at which extension of the material takes place more quickly as com¬pared to the increase in load is called

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True

False

Incorrect

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⇒ A riveted joint in which every rivet of a row is opposite to other rivet of the outer row, is known as

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least radius of gyration to length of column

⇒ Modulus of resilience is the proof resilience per unit volume of a material.

Correct

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minimum

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⇒ The Young's modulus of a wire is defined as the stress which will increase the length of wire compared to its original length

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one-fourth

⇒ In case of an over-reinforced beam, the depth of actual neutral axis is the same as that of the critical neutral axis.

True

False

Agree

Disagree

⇒ When a rectangular beam is loaded transversely, the maximum tensile stress is developed on the

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every cross-section

⇒ In the below figure, the point

*E*represents the maximum stress.

True

False

maximum

none of these

⇒ The actual neutral axis of a reinforced cement concrete beam is based on the principle that the moment of areas of compression and tension zones at the neutral axis are equal.

Agree

Disagree

Both (a) and (b)

None of these

⇒ In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is

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⇒ The direct stress, across a principal plane, is known as principal stress.

Yes

No

Agree

Disagree