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Q1. | Which of the following statement is wrong? |

A. | In the theory of simple bending, the assumption is that the plane sections before bending remains plane after bending. [Wrong Answer] |

B. | In a beam subjected to bending moment, the strain is directly proportional to the distance from the neutral axis. [Wrong Answer] |

C. | At the neutral axis of a beam, the bending stress is maximum. [Correct Answer] |

D. | The bending stress in a beam is inversely proportional to the section modulus. [Wrong Answer] |

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

⇒ The hoop stress in a thin cylindrical shell is.

longitudinal stress

compressive stress

radial stress

circumferential tensile stress

⇒ The change in the unit volume of a material under tension with increase in its Poisson's ratio will ,

increase

decrease

remain same

increase initially and then decrease

⇒ 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

⇒ A key is subjected to side pressure as well at shearing forces. These pressures are called

bearing stresses

fatigue stresses

crushing stresses

resultant stresses

⇒ In a belt drive, the pulley diameter is doubled, the belt tension and pulley width remaining same. The changes required in key will be

increase key length

increase key depth

increase key width

double all the dimensions

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

elastic point of the material

plastic point of the material

breaking point of the material

yielding point of the material

⇒ A leaf spring is supported at the.

ends and loaded at the centre

centre and loaded at the ends

ends and loaded anywhere

centre and loaded anywhere

⇒ Within elastic limit, shear stress is __________ shear strain.

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less than

directly proportional to

inversely proportional to

⇒ A concentrated load is one which?

acts at a point on a beam

spreads non-uniformly over the whole length of a beam

spreads uniformly over the whole length of a beam

varies uniformly over the whole length of a beam

⇒ The load required to produce a unit deflection in a spring is called.

flexural rigidity

torsional rigidity

spring stiffness

Young's modulus

⇒ The design of thin cylindrical shells is based on.

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longitudinal stress

arithmetic mean of the hoop and the longitudinal stress

geometric mean of the hoop and longitudinal stress

⇒ In calculating the strength of a riveted joint in tearing, shearing and crushing, the

actual diameter of rivet is used

actual diameter of hole drilled for rivet is used

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smaller of the rivet diameter and hole diameter is used

⇒ The limit of eccentricity for no tensile conditions for a column of circular section of diameter (

*d*) is

d/4

d/8

d/12

d/16

⇒ In the tensile test, the phenomenon of slow extension of the material, i. e. stress increasing with the time at a constant load is called

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yielding

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plasticity

⇒ A double strap butt joint with equal straps is

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always in double shear

either in single shear or double shear

none of these

⇒ Shear stress induced in a shaft subjected to tension will be

maximum at periphery and zero at center

maximum at center

uniform throughout

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⇒ In a simple bending of beams, the stress in the beam varies?

linearly

parabolically

hyperbolically

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⇒ In order to avoid sliding of masonry dam, the force of friction between the dam and soil should be at least __________ the total water pressure per metre length.

equal to

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2.5 times

⇒ When a bar of length

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*w*= Weight per unit volume of the bar).

wl/2E

wl2/2E

wl3/2E

wl4/2E

⇒ Strain energy is the?

energy stored in a body when strained within elastic limits

energy stored in a body when strained upto the breaking of a specimen

maximum strain energy which can be stored in a body

proof resilience per unit volume of a material

⇒ The impact strength of a material is an index of its

toughness

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hardness

⇒ If the tearing efficiency of a riveted joint is 50%, then ratio of rivet hole diameter to the pitch of rivets is?

0.20

0.30

0.50

0.60

⇒ The value of equivalent length is taken to be half of the actual length of a column with one end fixed and the other end free.

Agree

Disagree

Both (a) and (b)

None of these

⇒ The deformation of a bar under its own weight is __________ the deformation, if the same body is subjected to a direct load equal to weight of the body.

equal to

half

double

quadruple

⇒ A welded joint as compared to a riveted joint has __________ strength.

same

less

more

high

⇒ A cylindrical section having no joint is known as

joint less section

homogeneous section

perfect section

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⇒ A spring, when loaded, is permanently distorted and recover its original shape when the load is removed.

Agree

Disagree

Yes

No

⇒ Young's modulus may be defined as the ratio of.

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lateral strain to linear strain

linear stress to linear strain

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⇒ A bolt is made to pass through a tube and both of them are tightly fitted with the help of washers and nuts. If the nut is tightened, then.

bolt arid tube are under tension

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bolt is under compression and tube is under tension

bolt is Under tension and tube is under compression

⇒ The maximum shear stress developed in a beam of circular section is __________ the average shear stress.

equal to

4/3 times

1.5 times

twice