Structural Analysis A rigid-jointed plane frame is stable and statically determinate if (where m is number of members, r is reaction components and j is number of joints) (m + r) = 3j (m + r) = 2j (3m + r) = 3j (m + 3r) = 3j (m + r) = 3j (m + r) = 2j (3m + r) = 3j (m + 3r) = 3j ANSWER DOWNLOAD EXAMIANS APP
Structural Analysis For stable structures, one of the important properties of flexibility and stiffness matrices is that the elements on the main diagonal(i) Of a stiffness matrix must be positive(ii) Of a stiffness matrix must be negative(iii) Of a flexibility matrix must be positive(iv) Of a flexibility matrix must be negativeThe correct answer is (i) and (iii) (ii) and (iii) (i) and (iv) (ii) and (iv) (i) and (iii) (ii) and (iii) (i) and (iv) (ii) and (iv) ANSWER DOWNLOAD EXAMIANS APP
Structural Analysis Castigliano’s first theorem is applicable None of these when the system behaves elastically only when principle of superposition is valid for statically determinate structures only None of these when the system behaves elastically only when principle of superposition is valid for statically determinate structures only ANSWER DOWNLOAD EXAMIANS APP
Structural Analysis The thickness of the rectangular plate for the cap or base of a solid round steel columns, is calculated from the formula t = √[(9W/16 fbct) × D/(D -d)] where ‘d’ is The reduced diameter of the column The dimension of the base The diameter of the top The diameter of the base The reduced diameter of the column The dimension of the base The diameter of the top The diameter of the base ANSWER DOWNLOAD EXAMIANS APP
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 Stable and statically determinate None of these Unstable Stable and statically indeterminate Stable and statically determinate None of these Unstable ANSWER DOWNLOAD EXAMIANS APP
Structural Analysis If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of a pin-jointed plane frame is given by m + r – 3j m – r + 2j m + r – 2j m + r + 2j m + r – 3j m – r + 2j m + r – 2j m + r + 2j ANSWER DOWNLOAD EXAMIANS APP
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