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Structural Analysis - Interview Questions and Answers

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1. A pin-jointed plane frame is unstable if
A. (m + r)<2j
B. m + r = 2j
C. (m + r)>2j
D. none of the above
Explanation:
2. The deflection at any point of a perfect frame can be obtained by applying a unit load at the joint in
A. vertical direction
B. horizontal direction
C. inclined direction
D. the direction in which the deflection is required
Explanation:
3. If in a pin-jointed plane frame (m + r) > 2j, then the frame is
A. stable and statically determinate
B. stable and statically indeterminate
C. unstable
D. none of the above
Explanation:
4. Independent displacement components at each joint of a rigid-jointed plane frame are
A. three linear movements
B. two linear movements and one rotation
C. one linear movement and two rotations
D. three rotations
Explanation:
5. The degree of static indeterminacy of a pin-jointed space frame is given by
A. m + r - 2j
B. m + r - 3j
C. 3m + r - 3j
D. m + r + 3j
Explanation: