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Q1. | The principle of virtual work can be applied to elastic system by considering the virtual work of |

A. | internal forces only [Wrong Answer] |

B. | external forces only [Wrong Answer] |

C. | internal as well as external forces [Correct Answer] |

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

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

⇒ The principle of virtual work can be applied to elastic system by considering the virtual work of

internal forces only

external forces only

internal as well as external forces

none of the above

⇒ The Castigliano's second theorem can be used to compute deflections

in statically determinate structures only

for any type of structure

at the point under the load only

for beams and frames only

⇒ The width of the analogous column in the method of column analogy is

2/EI

1/EI

1/2 EI

1/4 EI

⇒ The force method in structural analysis always ensures

Equilibrium

Kinematically admissible t'orces

Equilibrium of forces

None of the above

⇒ A simply supported beam deflects by 5 mm when it is subjected to a concentrated load of 10 kN at its centre. What will be deflection in a 1/10 model of the beam if the model is subjected to a 1 kN load at its centre ?

5 mm

0.5 mm

0.05 mm

0.005mm

⇒ Unequal settlements in the supports of a statically indeterminate structure develop

Member forces

Reactions from supports

No reactions

Strains in some members only

⇒ For a two-hinged arch, if one of the supports settles down vertically, then the horizontal thrust

is increased

is decreased

remains unchanged

becomes zero

⇒ The fixed support in real beam becomes in the conjugate beam is

Fixed support

Hinged support

Roller support

Free support

⇒ The deformation of a spring produced by a unit load is called

stiffness

flexibility

influence coefficient

unit strain

⇒ The maximum bending moment due to a train of wheel loads on a simply supported girder

always occurs at center of span

always occurs under a wheel load

never occurs under a wheel load

none of the above

⇒ The degree of static indeterminacy up to which column analogy method can be used is

2

3

4

unrestricted

⇒ The truss can be analysed by the methods of joints when the number of unknown at a joint is equal to

1

2

3

4

⇒ In plastic analysis the shape factor for a circular section is

1.5

1.6

1.7

1.75

⇒ The deflection at any point of a perfect frame can be obtained by applying a unit load at the joint in

vertical direction

horizontal direction

inclined direction

the direction in which the deflection is required

⇒ In moment distribution method, the sum of distribution factors of all the members meeting at any joint is always

zero

less than 1

1

greater than 1

⇒ The carryover factor in a prismatic member whose far end is fixed is

0

1/2

3/4

1

⇒ When a uniformly distributed load, longer than the span of the girder, moves from left to right, then the maximum bending moment at mid section of span occurs when the uniformly distributed load occupies

less than the left half span

whole of left half span

more than the left half span

whole span

⇒ Select the correct statement

Flexibility matrix is a square symmetrical matrix

Stiffness matrix is a square symmetrical matrix

both (a) and (b)

none of the above

⇒ When a load crosses a through type Pratt truss in the direction left to right, the nature of force in any diagonal member in the left half of the span would

change from compression to tension

change from tension to compression

always be compression

always be tension

⇒ Which of the following will give higher ratio of brickwork strength to mortar strength ?

1 : % : 3

1 : Vz: 4>/2

1:1:6

1:2:9

⇒ Rich cement mortars are more liable to cracking as compared to lean mortars because rich mortars have

high shrinkage

less strength

both (a) and (b)

none of above

⇒ The three moment equation in structural analysis is basically a

Stiffness method

Displacement method

Energy method

Flexibility method

⇒ Principle of superposition is applicable when

deflections are linear functions of applied forces

material obeys Hooke's law

the action of applied forces will be affected by small deformations of the structure

none of the above

⇒ The moment distribution method in structural analysis can be treated as

Force method

Displacement method

Flexibility method

None of these

⇒ The method of moment distribution in structural analysis is

An iterative method

An exact method

An approximate method

None of these

⇒ For masonry built in 1:1:6 cement-lime-sand mix mortar or equivalent, the horizontal shear stress permissible on the area of a mortar bed joint is

0.15 MPa

0.125 MPa

0.1 MPa

0.075 MPa

⇒ Weaker mortar. Of these statements

2 and 3 are correct

1 and 2 are correct

1 and 3 are correct

1, 2 and 3 are correct

⇒ Water retentivity for brick masonry should not be less than

50%

60%

70%

80%

⇒ The basic stress in masonry units having height to width ratio of 1.5 may be increased by a factor of

1.2

1.4

1.6

2.0

⇒ For masonry work with solid bricks, consistency of mortar should be

5 to 8 cm

9 to 13 cm

14 to 18 cm

19 to 23 cm