Structural Analysis The degree of kinematic indeterminacy of a pin-jointed space frame is (where m, r and j have their usual meanings) 3j-r j-2r j-3r 2j-r 3j-r j-2r j-3r 2j-r 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 negative The correct answer is (i) and (iii) (ii) and (iii) (ii) and (iv) (i) and (iv) (i) and (iii) (ii) and (iii) (ii) and (iv) (i) and (iv) ANSWER DOWNLOAD EXAMIANS APP
Structural Analysis When a load crosses a through type Pratt truss in the direction left to right, the nature of force in any diagonal member in the left half of the span would Change from compression to tension Change from tension to compression Always be tension Always be compression Change from compression to tension Change from tension to compression Always be tension Always be compression 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 + 2j m + r – 2j m – r + 2j m + r – 3j m + r + 2j m + r – 2j m – r + 2j m + r – 3j ANSWER DOWNLOAD EXAMIANS APP
Structural Analysis Muller Breslau’s principle for obtaining influence lines is applicable to i) trusses ii) statically determinate beams and frames iii) statically indeterminate structures, the material of which is elastic and follows Hooke’s law iv) any statically indeterminate structure The correct answer is only (i) (i), (ii) and (iii) (i), (ii) and (iv) (i) and (ii) only (i) (i), (ii) and (iii) (i), (ii) and (iv) (i) and (ii) 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) Unstable Stable and statically determinate Stable and statically indeterminate None of these Unstable Stable and statically determinate Stable and statically indeterminate None of these ANSWER DOWNLOAD EXAMIANS APP
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