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Q1. | When a body is subjected to a direct tensile stress (σ), the maximum normal stress is equal to the direct tensile stress. |

A. | Agree [Correct Answer] |

B. | Disagree [Wrong Answer] |

C. | Yes [Wrong Answer] |

D. | No [Wrong Answer] |

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**Also Read Similar Questions Below :**

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

minimum

maximum

changing sign

zero

⇒ A beam of

*T*-section is subjected to a shear force of

*F*. The maximum shear force will occur at the.

top of the section

bottom of the section

neutral axis of the section

junction of web and flange

⇒ In a cantilever beam of length

*l*subjected to a uniformly distributed load of

*w*per unit length, the maximum deflection lies at the fixed end.

Yes

No

True

False

⇒ In riveted boiler joints, all stresses, shearing, bearing and tensile are based on the

size of rivet

size of the drilled or reamed hole

average of size of rivet and hole

smaller of the two

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

flexural rigidity

torsional rigidity

spring stiffness

Young's modulus

⇒ The percentage reduction in area of a cast iron specimen during tensile test would be of the order of

more than 50%

25—50%

10—25%

5—10%

⇒ The lower layer of the beam as shown in the below figure, will be

in tension

in compression

neither in tension nor in compression

none of these

⇒ Rupture stress is

breaking stress

maximum load/original cross-section¬al area 04)

load at breaking point/A

load at breaking point/neck area

⇒ The maximum deflection of a fixed beam carrying a central point load lies at.

fixed ends

centre of beam

l/3 from fixed ends

none of these

⇒ A column that fails due to direct stress, is called.

short column

long column

weak column

medium column

⇒ When the shear force diagram is a parabolic curve between two points, it indicates that there is a

point load at the two points

no loading between the two points

uniformly distributed load between the two points

uniformly varying load between the two points

⇒ A material capable of absorbing large amount of energy before fracture is known as

ductility

toughness

resilience

shock proof

⇒ The compressive strength of brittle materials is __________ its tensile strength.

equal to

less than

greater than

none of these

⇒ When a bar of length

*l*, width

*b*and thickness

*t*is subjected to a push of

*P*, its.

length, width and thickness increases

length, width and thickness decreases

length increases, width and thickness decreases

length decreases, width and tickness increases

⇒ When a rectangular beam is loaded longitudinally, the shear force develops on the top layer.

Agree

Disagree

True

False

⇒ A pressure vessel is said to be a thick shell, when.

it is made of thick sheets

the internal pressure is very high

the ratio of wall thickness of the vessel to its diameter is less than 1/10.

the ratio of wall thickness of the vessel to its diameter is greater than 1/10.

⇒ The polar moment of inertia of a solid circular shaft of diameter (

*D*) is.

nD3/16

nD3/32

nD4/32

nD4/64

⇒ In the above question, the ratio of stiffness of spring '

*B*' to spring '

*A*' will be.

2

4

6

8

⇒ 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

⇒ The buckling load for a given material depends on

slenderness ratio and area of cross-section

Poisson's ratio and modulus of elasticity

slenderness ratio and modulus of elasticity

slenderness ratio, area of cross-section and modulus of elasticity

⇒ The breaking stress is __________ the ultimate stress.

equal to

less than

greater than

none of these

⇒ A steel bar 2 m long, 20 mm wide and 10 mm thick is subjected to a pull of 2 kN. If the same bar is subjected to a push of 2 kN, the Poission's ratio of the bar in tension will be __________ the Poisson's ratio for the bar in compression.

equal to

less than

greater than

none of these

⇒ A closely coiled helical spring is of mean diameter (

*D*) and spring wire diameter (

*d*). The spring index is the ratio of.

1/d

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D/d

d/D

⇒ Every direct stress is always accompanied by a strain in its own direction and an opposite kind of strain in every direction, at right angles to it. Such a strain is known as

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lateral strain

volumetric strain

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

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increase key depth

increase key width

double all the dimensions

⇒ 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 simple bending theory, one of the assumption is that the material of the beam is isotropic. This assumption means that the?

normal stress remains constant in all directions

normal stress varies linearly in the material

elastic constants are same in all the directions

elastic constants varies linearly in the material

⇒ For which material the Poisson's ratio is more than unity

steel

copper

aluminum

cast iron

⇒ Two shafts '

*A*' and '

*B*' are made of same material. The shaft '

*A*' is of diameter

*D*and shaft '

*B*' is of diameter

*D*/2. The strength of shaft '

*B*' is __________ as that of shaft '

*A*'

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one-fourth

one-half

four times

⇒ 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