1. A rigid-jointed plane frame is stable and statically determinate if (Where m is number of members, r is reaction components and j is number of joints)
Correct : C. (3m + r) = 3j
2. In moment distribution method, the sum of distribution factors of all the members meeting at any joint is always
Correct : C. 1
3. 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
Correct : D. The load position should be such that the section divides the load in the same ratio as it divides the span
4. The width of the analogous column in the method of column analogy is
Correct : B. 1/EI
5. 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
Correct : A. (i), (ii) and (iii)
6. The degree of static indeterminacy of a rigid-jointed space frame is (Where m, r and j have their usual meanings)
Correct : D. 6m + r - 6j
7. Degree of kinematic indeterminacy of a pin-jointed plane frame is given by
Correct : A. 2j - r
8. The number of independent equations to be satisfied for static equilibrium of a plane
structure is
Correct : C. 3
9. The degree of static indeterminacy of a pin-jointed space frame is given by
m r j number of joints)
Correct : B. m + r - 3j
10. While using three moments equation, a fixed end of a continuous beam is replaced by an additional span of
Correct : A. Zero length
11. Study the following statements.
(i) The displacement method is more useful when degree of kinematic indeterminacy is greater than the degree of static indeterminacy.
(ii) The displacement method is more useful when degree of kinematic indeterminacy is less than the degree of static indeterminacy.
(iii) The force method is more useful when degree of static indeterminacy is greater than the degree of kinematic indeterminacy.
(iv) The force method is more useful when degree of static indeterminacy is less than the degree of kinematic indeterminacy.
The correct answer is
Correct : D. (ii) and (iv)
12. Bending moment at any section in a conjugate beam gives in the actual beam
Correct : C. Deflection
13. The number of independent displacement components at each joint of a rigid-jointed space frame is
Correct : D. 6
14. Independent displacement components at each joint of a rigid-jointed plane frame are
Correct : B. Two linear movements and one rotation
15. 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
Correct : C. m + r - 2j
16. The carryover factor in a prismatic member whose far end is fixed is
Correct : B. 1/2
17. Effects of shear force and axial force on plastic moment capacity of a structure are respectively to
Correct : D. Decrease and decrease
18. The degree of kinematic indeterminacy of a pin-jointed space frame is (Where j is number of joints and r is reaction components)
Correct : B. 3j - r
19. The maximum bending moment due to a train of wheel loads on a simply supported girder
Correct : B. Always occurs under a wheel load
20. Consider the following statements:
Sinking of an intermediate support of a continuous beam
1. Reduces the negative moment at support.
2. Increases the negative moment at support.
3. Reduces the positive moment at support.
4. Increases the positive moment at the centre of span.
Of these statements
Correct : A. 1 and 4 are correct
21. When a series of wheel loads crosses a simply supported girder, the maximum bending moment under any given wheel load occurs when
Correct : B. The centre of span is midway between the centre of gravity of the load system and the wheel load under consideration
22. Castigliano's first theorem is applicable
Correct : C. Only when principle of superposition is valid
23. Number of unknown internal forces in each member of a rigid jointed plane frame is
Correct : C. 3
24. The number of independent equations to be satisfied for static equilibrium in a space
structure is
Correct : D. 6
25. 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?
Correct : A. 5 mm
26. A pin-jointed plane frame is unstable if (Where m is number of members, r is reaction components and j is number of joints)
Correct : A. (m + r) < 2j
27. Degree of static indeterminacy of a rigid-jointed plane frame having 15 members, 3 reaction Components and 14 joints is
Correct : C. 6
28. The degree of static indeterminacy up to which column analogy method can be used is
Correct : B. 3
29. In the slope deflection equations, the deformations are considered to be caused by
(i) Bending moment
(ii) Shear force
(iii) Axial force
The correct answer is
Correct : A. Only (i)
30. A single rolling load of 8 kN rolls along a girder of 15 m span. The absolute maximum
bending moment will be