Structural Analysis
To generate the j th column of the flexibility matrix

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

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Structural Analysis
The minimum horizontal distance between two parallel main reinforcing bars, is

The diameter of the longer bar if their diameters are unequal
The diameter of the bar if their diameters are same
Greatest value of the above
5 mm more than nominal maximum size of the coarse aggregate

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Structural Analysis
Pick up the incorrect statement from the following:

None of these
The gross section of the web of rolled I-beams is the depth of the beam multiplied by the web thickness
The gross section of the web of channels is the depth of the web multiplied by its thickness
The gross section of the web of plate girders is the depth of the web plate multiplied by its thickness

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