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

A. | The stress is the pressure per unit area. [Wrong Answer] |

B. | The strain is expressed in mm. [Wrong Answer] |

C. | Hook's law holds good upto the breaking point. [Wrong Answer] |

D. | Stress is directly proportional to strain within elastic limit. [Correct Answer] |

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

⇒ A body is subjected to a tensile stress of 1200 MPa on one plane and another tensile stress of 600 MPa on a plane at right angles to the former. It is also subjected to a shear stress of 400 MPa on the same planes. The maximum shear stress will be.

400 MPa

500 MPa

900 MPa

1400 MPa

⇒ The shear force at the ends of a simply supported beam carrying a uniformly distributed load of

*w*per unit length is.

zero at its both ends

wl at one end and - wl at the other end

wl/2 at one end and - wl/2 at the other end

wl2/2 at one end and - wl2/2 at the other end

⇒ Which of the following statement is correct?

The stress is the pressure per unit area.

The strain is expressed in mm.

Hook's law holds good upto the breaking point.

Stress is directly proportional to strain within elastic limit.

⇒ A body is subjected to a direct tensile stress of 300 MPa in one plane accompanied by a simple shear stress of 200 MPa. The maximum shear stress will be

-100 MPa

250 MPa

300 MPa

400 MPa

⇒ Hook's law holds good up to

yield point

elastic limit

plastic limit

breaking point

⇒ In a riveted joint, when the number of rivets decreases from the inner most row to outer most row, the joint is said to be

chain riveted

zig-zag riveted

diamond riveted

none of these

⇒ The materials having same elastic properties in all directions are called

ideal materials

uniform materials

isotropic materials

practical materials

⇒ In case of an under-reinforced beam, the depth of actual neutral axis is __________ that of the critical neutral axis.

same as

less than

greater than

Both (a) and (b)

⇒ When there is no increase or decrease in shear force between two points, it indicates that there is no change in the bending moment between these points.

True

False

Minimum

None of these

⇒ The bending moment of a cantilever beam of length

*l*and carrying a gradually varying load from zero at free end and

*w*per unit length at the fixed end is __________ at the fixed end.

wl/2

wl

wl2/2

wl2/6

⇒ Modulus of rigidity is defined as the ratio of

longitudinal stress and longitudinal strain

volumetric stress and volumetric strain

lateral stress and lateral strain

shear stress and shear strain

⇒ The ratio of shear modulus to the modulus of elasticity for a Poisson's ratio of 0.4 will be.

5/7

7/5

5/14

14/5

⇒ For no tension condition in the base of a short column of circular section, the line of action of the load should be within a circle of diameter equal to __________ of the main circle.

one-half

one-third

one-fourth

one-eighth

⇒ In a simply supported beam carrying a uniformly distributed load w per unit length, the point of contraflexure.

lies in the centre of the beam

lies at the ends of the beam

depends upon the length of beam

does not exist

⇒ The product of Young's modulus (

*E*) and moment of inertia (

*I*) is known as

modulus of rigidity

bulk modulus

flexural rigidity

torsional rigidity

⇒ The bending moment on a section is maximum where shear force is

minimum

maximum

changing sign

zero

⇒ The shear force of a cantilever beam of length

*l*and carrying a gradually varying load from zero at the free end and

*w*per unit length at the fixed end is __________ at the fixed end.

zero

wl/4

wl/2

wl

⇒ The ratio of bulk modulus to Young's modulus for a Poisson's ratio of 0.25 will be.

1/3

2/3

1

3/2

⇒ When a material is loaded within elastic limit, the material will regain its shape and size when the load is removed.

Agree

Disagree

Maximum

Minimum

⇒ The assumption made in the theory of the reinforced cement concrete beam is that

all the tensile stresses are taken up by the steel reinforcement only

there is a sufficient bond between steel and concrete

the steel and concrete are stressed within its elastic limit

all of the above

⇒ When a thin cylindrical shell is subjected to an internal pressure, there will be?

a decrease in diameter and length of the shell

an increase in diameter and decrease in length of the shell

a decrease in diameter and increase in length of the shell

an increase in diameter and length of the shell

⇒ The total strain energy stored in a body is termed as

resilience

proof resilience

modulus of resilience

toughness

⇒ 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 bending stress in abeam is __________ bending moment.

equal to

less than

more than

directly proportional to

⇒ The elasticity of various materials is controlled by its

ultimate tensile stress

proof stress

stress at yield point

stress at elastic limit

⇒ When one plate overlaps the other and the two plates are riveted together with two rows of rivets, the joint is known as.

single riveted lap joint

double riveted lap joint

double riveted single cover butt joint

double riveted double cover butt joint

⇒ A thin cylindrical shell of diameter (

*d*) length (

*l*) and thickness (

*t*) is subjected to an internal pressure (

*p*). The longitudinal stress in the shell is.

pd/t

pd/2t

pd/4t

pd/6t

⇒ In a stress-strain diagram as shown in the below figure, the curve

*A*represents

mild steel

soft brass

low carbon steel

cold rolled steel

⇒ When a beam is subjected to a bending moment, the strain in a layer is __________ the distance from the neutral axis.

equal to

directly proportional to

inversely proportional to

independent of

⇒ A body is subjected to a direct tensile stress of 300 MPa in one plane accompanied by a simple shear stress of 200 MPa. The maximum normal stress will be

-100 MPa

250 MPa

300 MPa

400 MPa400 MPa