Castigliano’s first theorem is applicable_______________?

Related Mcqs:

1. The Castigliano’s second theorem can be used to compute deflections________________?

   A. in statically determinate structures only
   B. for any type of structure
   C. at the point under the load only
   D. for beams and frames only

2. 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

3. For a two-hinged arch, if one of the supports settles down vertically, then the horizontal thrust______________?

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

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. 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___________________?

   A. the head of the load reaches the section
   B. the tail of the load reaches the section
   C. the load position should be such that the section divides it equally on both sides
   D. the load position should be such that the section divides the load in the same ratio as it divides the

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. Independent displacement components at each joint of a rigid-jointed plane frame are_________________?

   A. three linear movements
   B. two linear movements and one rotation
   C. one linear movement and two rotations
   D. three rotations

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)