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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 :**

⇒ Castigliano's first theorem is applicable

for statically determinate structures only

when the system behaves elastically

only when principle of superposition is valid

none of the above

⇒ The force method in structural analysis always ensures

Equilibrium

Kinematically admissible t'orces

Equilibrium of forces

None of the above

⇒ Minimum compressive strength in N/mm2 for H1 type mortar used for masonry is

3

5

7.5

10

⇒ Which of the following methods of structural analysis is a displacement method ?

moment distribution method

column analogy method

three moment equation

none of the above

⇒ Degree of kinematic indeterminacy of a pin-jointed plane frame is given by

2j - r

j - 2r

3j - r

2j + r

⇒ Maxwell's reciprocal theorem in structural analysis can be applied in

All elastic structures

Plastic structures

Symmetrical structures only

Prismatic element structures only

⇒ 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

⇒ While using three moments equation, a fixed end of a continuous beam is replaced by an additional span of

zero length

infinite length

zero moment of inertia

none of the above

⇒ 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

⇒ The three moment equation in structural analysis is basically a

Stiffness method

Displacement method

Energy method

Flexibility method

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

roller support

hinged support

fixed support

free end

⇒ The thickness of each leaf of a cavity wall shall not be less than

5 cm

7.5 cm

10 cm

15 cm

⇒ 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

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

Force method

Displacement method

Flexibility method

None of these

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

Fixed support

Hinged support

Roller support

Free support

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

2

3

4

unrestricted

⇒ 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

⇒ To generate the j th column of the flexibility matrix

a unit force is applied at coordinate j and the displacements are calculated at all coordinates

a unit displacement is applied at co-ordinate j and the forces are calculated at all coordinates

a unit force is applied at coordinate j and the forces are calculated at all coordinates

a unit displacement is applied at co-ordinate j and the displacements are calculated at all co-ordinates

⇒ The ratio between the stress produced in a bar by a sudden applicaiton of load on compared to the stress produced by the gradual application of same load is

1.5

2.0

2.5

3.0

⇒ 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

⇒ The number of independent equations to be satisfied for static equilibrium of a plane structure is

1

2

3

6

⇒ 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

⇒ For earthquake resistant masonry buildings, where seismic coefficient is less than 0.08, the horizontal distance between two openings shall not be less than

Vt x height of shorter opening

Vt x height of longer opening

Ax height of shorter opening

Vi x height of longer opening

⇒ The timber floor not spanning on the masonry wall but properly anchored to the wall gives

lateral restraint but not rotational restraint

rotational restraint but not lateral restraint

both lateral and rotational restraints

neither lateral nor rotational restraint

⇒ 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

⇒ 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

⇒ When a uniformly distributed load, shorter than the span of the girder, moves from left to right, then the conditions for maximum bending moment at a section is that

the head of the load reaches the section

the tail of the load reaches the section

the load position should be such that the section divides it equally on both sides

the load position should be such that the section divides the load in the same ratio as it divides the span

⇒ If the horizontal cross-sectional area of a wall is 1200 cm2, then the basic stress shall be multiplied by a reduction factor equal to

0 6

0.75

0.85

0.95

⇒ The analysis of statically indeterminate structures by the unit load method is based on

Consistent deformation

Stiffness method

Consistent force

None of these

⇒ 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