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 – 2j m + r – 3j m + r + 2j m – r + 2j m + r – 2j m + r – 3j m + r + 2j m – r + 2j ANSWER DOWNLOAD EXAMIANS APP
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 (3m + r) = 3j (m + r) = 2j (m + 3r) = 3j (m + r) = 3j (3m + r) = 3j (m + r) = 2j (m + 3r) = 3j ANSWER DOWNLOAD EXAMIANS APP
Structural Analysis A pin-jointed plane frame is unstable if (where m is number of members, r is reaction components and j is number of joints) (m + r)<2j None of these (m + r)>2j m + r = 2j (m + r)<2j None of these (m + r)>2j m + r = 2j ANSWER DOWNLOAD EXAMIANS APP
Structural Analysis The deflection at any point of a perfect frame can be obtained by applying a unit load at the joint in Vertical direction Horizontal direction Inclined direction The direction in which the deflection is required Vertical direction Horizontal direction Inclined direction The direction in which the deflection is required 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 (iv) (ii) and (iii) (i) and (iii) (ii) and (iv) (i) and (iv) (ii) and (iii) (i) and (iii) (ii) and (iv) ANSWER DOWNLOAD EXAMIANS APP
Structural Analysis The number of independent displacement components at each joint of a rigid-jointed space frame is 1 6 3 2 1 6 3 2 ANSWER DOWNLOAD EXAMIANS APP
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