Structural Analysis
If in a pin-jointed plane frame (m + r) > 2j, then the frame is (Where ‘m’ is number of members, ‘r’ is reaction components and ‘j’ is number of joints)

Stable and statically indeterminate
None of these
Unstable
Stable and statically determinate

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Structural Analysis
The effective length of lacing is the distance

0.7 of the distance between the inner end rivets of the bar for double lacing
Between the inner ends of effective lengths of welds connecting the members
Between the inner end rivets of the bar for single lacing
All of these

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Structural Analysis
When a series of wheel loads crosses a simply supported girder, the maximum bending moment under any given wheel load occurs when

The centre of span is midway between the centre of gravity of the load system and the wheel load under consideration
The centre of gravity of the load system is midway between the centre of span and wheel load under consi-deration
The wheel load under consideration is midway between the centre of span and the centre of gravity of the load system
None of these

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