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Q1. | Under external loads the stress is developed in the body due to |

A. | Heating [Wrong Answer] |

B. | Deformation of particles [Correct Answer] |

C. | Cooling of particles [Wrong Answer] |

D. | None of the above [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss it below :??? & ????? ?? ??? Said on 2018-09-26 05:29:46Solved !! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ The upper end of a wire of radius 4 mm and length 100 cm is clamped and its other end is twisted through an angle of 30°, the angle of shear is

12°

0.12°

1.2°

0.012°

⇒ A rectangular beam 20 cm wide is subjected to a maximum shearing force of 10, 000 kg, the corresponding maximum shearing stress being 30 kg/cm

^{2}. The depth of the beam is

15 cm

20 cm

25 cm

30 cm.

⇒ A short masonry pillar is 60 cm x 60 cm in cross-section, the core of the pillar is a square whose side is.

17.32 cm

14.14 cm

20.00 cm

22.36 cm

⇒ The cross sections of the beams of equal length are a circle and a square whose permissible bending stress are same under same maximum bending. The ratio of their flexural weights is,.

1.118

1.338

1.228

1.108

⇒ A column is said to be of medium size if its slenderness ratio is between.

20 and 32

32 and 120

120 and 160

160 and 180

⇒ In a three hinged arch, the shear force is usually

maximum at crown

maximum at springings

maximum at quarter points

varies with slope.

⇒ A three-hinged arch is said to be :

statically determinate structure

statically indeterminate structure

a bent beam

none of these.

⇒ A steel rod of 2 cm diameter and 5 metres long is subjected to an axial pull of 3000 kg. If

*E*= 2.1 x 10

^{6}, the elongation of the rod will be.

2.275 mm

0.2275 mm

0.02275 mm

2.02275 mm.

⇒ If the shear force along a section of a beam is zero, the bending moment at the section is.

zero

maximum

minimum

average of maximum-minimum

⇒ The moment diagram for a cantilever whose free end is subjected to a bending moment, will be a.

triangle

rectangle

parabola

cubic parabola

⇒ A 8 metre long simply supported rectangular beam which carries a distributed load 45 kg/m. experiences a maximum fibre stress 160 kg/cm

^{2}. If the moment of inertia of the beam is 640 cm

^{4}, the overall depth of the beam is.

10 cm

12 cm

15 cm

16 cm

⇒ The property of a material enabling it to resist deformation under stress is called

Toughness

Stiffness

Strength

Brittleness

⇒ In the cantilever truss as shown in below figure, the horizontal component of the reaction at

*A*, is

30 tonnes

60 tonnes

90 tonnes

120 tonnes

⇒ A shaft 9 m long is subjected to a torque 30

*t*-m at a point 3 m distant from either end. The reactive torque at the nearer end will be.

5 tonnes metre

10 tonnes metre

15 tonnes metre

20 tonnes metre

⇒ Stress in a beam due to simple bending, is.

directly proportional

inversely proportional

curvilinearly related

none of these.

⇒ For gases

Isothermal elasticity is greater than adiabatic elasticity

Adiabatic elasticity is greater than isothermal elasticity

Both the elasticities are equal

None of these

⇒ Proof resilience is the maximum energy stored at

limit of proportionality

elastic limit

plastic limit

none of the above

⇒ The impact test assess the property of material such as its

Hardness

Strength

Toughness

Brittleness

⇒ The stress necessary to initiate yielding, is considerably.

more than that necessary to continue it

less than that necessary to continue it

more than that necessary to stop it

less than that necessary to stop it

⇒ The ratio of average shear stress to maximum shear stress for a circular section is

2

2/3

3/2

3/4

⇒ The slenderness ratio of a vertical column of square cross- section of 10 cm side and 500 cm long, is.

117.2

17.3

173.2

173.2

⇒ The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied ?

Length = 50 cm and diameter = 0.5 mm

Length = 100 cm and diameter = 0.5 mm

Length = 200 cm and diameter = 2 mm

Length = 300 cm and diameter = 3 mm

⇒ If a point in a strained material is subjected to equal normal and tangential stresses, then the angle of obliquity is

0°

45°

tan"1 (1/2)

tan"1 (2)

⇒ The intensity of direct longitudinal stress in the cross-section at any point distant

*r*from the neutral axis, is proportional to.

r

1/r

r2

1/r2

⇒ A triangular section having base

*b*, height

*h*, is placed with its base horizontal. If the shear stress at a depth

*y*from top is

*q*, the maximum shear stress is.

3S/bh

4S/bh

4b/Sh

3b/bS

⇒ For ductile materials, the most appropriate failure theory is

maximum shear stress theory

maximum principal stress theory

maximum principal strain theory

shear strain energy theory

⇒ The law which states, "within elastic limits strain produced is proportional to the stress producing it", is known as.

Bernoulli's law

Stress law

Hooke's law

Poisson's law

⇒ Weakest section in a fillet weld is

throat of the fillet

smaller side

side parallel to force

side perpendicular to force

⇒ The relationship between Young's, modulus of elasticity E, bulk modulus K and Poisson's ratio u is given by

E = 2K(l-2u.)

E = 3K(l + u)

E = 3K(l-2u)

E = 2K(l + u)

⇒ If the width of a simply supported beam carrying an isolated load at its centre is doubled, the deflection of the beam at the centre is changed by

1/2

1/8

2

8