Select the correct statement?

Related Mcqs:

1. The degree of kinematic indeterminacy of a pin-jointed space frame is_____________?

   A. 2j-r
   B. 3j-r
   C. j-2r
   D. j-3r
   where j is number of joints and r is reaction components

2. The three moments equation is applicable only when___________________?

   A. the beam is prismatic
   B. there is no settlement of supports
   C. there is no discontinuity such as hinges within the span
   D. the spans are equal

3. Which of the following is not the displacement method ?

   A. Equilibrium method
   B. Column analogy method
   C. Moment distribution method
   D. Kani’s method

4. Effects of shear force and axial force on plastic moment capacity of a structure are respectively to_________________?

   A. increase and decrease
   B. increase and increase
   C. decrease and increase
   D. decrease and decrease

5. 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_______________?

   A. change from compression to tension
   B. change from tension to compression
   C. always be compression
   D. always be tension

6. Which of the following methods of structural analysis is a force method ?

   A. slope deflection method
   B. column analogy method
   C. moment distribution method
   D. none of the above

7. The carryover factor in a prismatic member whose far end is fixed is___________________?

   A. 0
   B. 1/2
   C. 3/4
   D. 1

8. A pin-jointed plane frame is unstable if________________?

   A. (m + r)<2j
   B. m + r = 2j
   C. (m + r)>2j
   D. none of the above

   where m is number of members, r is reaction components and j is number of joints

9. To generate the j the column of the flexibility matrix________________?

   A. a unit force is applied at coordinate j and the displacements are calculated at all coordinates
   B. a unit displacement is applied at co-ordinate j and the forces are calculated at all coordinates
   C. a unit force is applied at coordinate j and the forces are calculated at all coordinates
   D. a unit displacement is applied at co-ordinate j and the displacements are calculated at all co-ordinates

10. For stable structures, one of the important properties of flexibility and stiffness matrices is that the elements on the main diagonal________________?

    i) of a stiffness matrix must be positive
    ii) of a stiffness matrix must be negative
    iii) of a flexibility matrix must be positive
    iv) of a flexibility matrix must be negative
    The correct answer is

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