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

Related Mcqs:

1. Muller Breslau’s principle for obtaining influence lines is applicable to___________________?

   i) trusses
   ii) statically determinate beams and frames
   iii) statically indeterminate structures, the material of which is elastic and follows Hooke’s law
   iv) any statically indeterminate structure

   The correct answer is ?

   A. (i), (ii) and (iii)
   B. (i), (ii) and (iv)
   C. (i) and (ii)
   D. only (i)

2. Principle of superposition is applicable when___________________?

   A. deflections are linear functions of applied forces
   B. material obeys Hooke’s law
   C. the action of applied forces will be affected by small deformations of the structure
   D. none of the above

3. Degree of kinematic indeterminacy of a pin-jointed plane frame is given by______________?

   A. 2j – r
   B. j – 2r
   C. 3j – r
   D. 2j + r

4. In moment distribution method, the sum of distribution factors of all the members meeting at any joint is always__________________?

   A. zero
   B. less than 1
   C. 1
   D. greater than 1

5. A single rolling load of 8 kN rolls along a girder of 15 m span. The absolute maximum bending moment will be________________?

   A. 8 kN.m
   B. 15 kN.m
   C. 30 kN.m
   D. 60 kN.m

6. The fixed support in a real beam becomes in the conjugate beam a___________________?

   A. roller support
   B. hinged support
   C. fixed support
   D. free end

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

   A. moment distribution method
   B. column analogy method
   C. three moment equation
   D. none of the above

8. For a symmetrical two hinged parabolic arch, if one of the supports settles horizontally, then the horizontal thrust__________________?

   A. is increased
   B. is decreased
   C. remains unchanged
   D. becomes zero

9. The number of independent displacement components at each joint of a rigid-jointed space frame is_______________?

   A. 1
   B. 2
   C. 3
   D. 6

10. If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of a pin-jointed plane frame is given by__________________?

    A. m + r + 2j
    B. m – r + 2j
    C. m + r – 2j
    D. m + r – 3j