# Civil engineer objective questions – Structural Analysis and Design (Section-5)

1. An elastic prop is one which

a) does not offer any reaction

b) supports the entire load and relieves all other supports completely

c) develops reaction proportional to the compression in itself

d) none of the above

2. A sinking prop is one which

a) permits any amount of deflection

b) does not permit any deflection at all

c) is provided below the level of regular supports and becomes effective after the respective deflection occurs

d) none of the above

3. A support over which the real beam is continuous will correspond to

a) an internal hinge in the conjugate beam

b) a hinged support in the conjugate beam

c) a fixed support in the conjugate beam

d) a discontinuity in the conjugate beam

4. A suspension cable, and supporting loads will be under

a) tension

b) bending

c) compression

d) compression and bending

5. The maximum tension in a cable occurs

a) at the highest point in the cable

b) at the lowest point in the cable

c) at the centre point of the cable

d) at all points in the cable

6. A cable subjected to UDL over its entire span assumes a shape of

a) semi-circle

b) an isosceles triangle

c) parabola

d) none of the above

7. A frame is completely analysed, when

a) the variation in shear is found throughout the frame

b) the variation in direct stress, shear and moment is found throughout the frame

c) the shear and moment reaction from member to member are known at every joint

d) none of the above

8. A prop is

a) An additional support provided to a stable structure to avoid any displacement at the desired point in a direction perpendicular to the plane of the prop

b) the support which gives the maximum number of reactions for the stability of the structure

c) a support which will not affect the geometry of the deformed structure

d) a dummy support provided for architectural purposes

9. A rigid prop is one which

a) permits 50% of free deflection, that would have occurred if the prop were not there

b) does not permit any displacement perpendicular to that plane of prop

c) does not offer any reaction

d) supports the entire load and relieves all other supports completely.

10. What is the maximum number of unknown reaction components that can be determined using only statics

a) 0

b) 1

c) 2

d) 3

11. A statically indeterminate structure is the one which

a) cannot be analysed using the equations of statics alone

b) cannot be analysed at all

d) can be analysed with the equations of statics alone

12. A roller support for a space structure

a) permits the movement perpendicular to the base of the supports only

b) permits movement in any direction in the plane of the base

c) does not permit any movement but permits rotation

d) permits movement in any direction in the plane of the base but does not permit any rotation

13. A plane structure which subjected to a force lying outside the plane will be

a) stable

c) unstable

b) statically determinate

d) statically indeterminate

14. An externally indeterminate structure is the one in which

a) the total number of external reaction components is more than the equations of statics applicable to the structure as a whole

b) the total number of external reaction components is more than the degree of indeterminacy

c) the sum of external reaction components and the degree of internal redundancy is greater than three

d) none of the above

15. An internally indeterminate structure

a) must be externally indeterminate

b) must be externally determinate

c) may be an unstable structure based on supports

d) none of the above

16. A hinged support for a space structure

a) permits the movement perpendicular to the base of the support only

b) permits movement in any direction in the plane of the base

c) does not permit any movement at all but permits rotation about all three mutually perpendicular axes through the joint

d) does not permit movement as well as rotation in any direction.

17. A plane structure is structure

a) the various members of which lie in a plane

b) the thickness of various members of which will be very small

c) in which there will not be any bending moment

d) none of the above

18. A one dimensional structure is one in which

a) one dimension is very small and other two are large

b) one dimension is much larger than the other two dimensions

c) all the three dimensions are equal

d) none of the above

19. A two-dimensional structure is one in which

a) two dimensions are very much larger than the third

b) all the dimensions are equal

c) two dimensions are very much smaller than the third

d) none of the above

20. The analysis of a structure is

a) deciding the material of the member

b) deciding the dimensions of the member

c) calculating the magnitude and nature of various straining actions at salient points of the structure

d) planning of the structure

21. The design of a structure is

a) the planning of the structure

b) the calculation of straining actions at salient points

c) deciding the material and proportions of the various members of the structure

d) none of the above

22. A fixed support for a space structure

a) permits the translation only in all direction

b) permits rotation only about all three mutually perpendicular axes through the joint

c) permits rotation about all the three mutually perpendicular axes and movement in any direction in the plane of the base

d) permits neither rotation about nor translation along, any of the three principal axes

23. Free body diagram is

a) the diagram of the body or a part of the body in isolated equilibrium

b) the diagram of a body freed from all the forces that have been acting

c) the diagram of a body with no supports at all

d) none of the above

24. The free body diagram of a portion of a body will be in equilibrium under the action of

a) only external loading acting on that part without consideration of support reactions

b) all super-imposed loads, self-weight, support reactions, if any, and the internal reactions exposed at the cuts

c) only support reactions and the internal reactions exposed at the cuts

d) external loading acting on that part and internal reactions exposed at the cuts

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