

MCQOPTIONS
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1. |
A pin-jointed plane frame is unstable if (Where m is number of members, r is reaction components and j is number of joints) |
A. | (m + r) < 2j |
B. | (m + r) = 2j |
C. | (m + r) > 2j |
D. | None of the above |
Answer» B. (m + r) = 2j | |