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43.

The number of independent displacement components at each joint of a rigid-jointed space frame is

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

44.

The number of independent equations to be satisfied for static equilibrium in a space structure is

A.	2	B.	3
C.	4	D.	6

45.

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

A.	internal forces only	B.	external forces only
C.	internal as well as external forces	D.	none of the above

46.

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

47.

The width of the analogous column in the method of column analogy is

A.	2/EI	B.	1/EI
C.	1/2 EI	D.	1/4 EI

48.

To generate the j th 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

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