Question 11. 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

Question 12. Study the following statements.i) The displacement method is more useful when degree of kinematic indeterminacy is greater than the degree of static indeterminacy.ii) The displacement method is more useful when degree of kinematic indeterminacy is less than the degree of static indeterminacy.iii) The force method is more useful when degree of static indeterminacy is greater than the degree of kinematic indeterminacy.iv) The force method is more useful when degree of static indeterminacy is less than the degree of kinematic indeterminacy.The correct answer is

Question 13. Muller Breslau’s principle for obtaining influence lines is applicable toi) trussesii) statically determinate beams and framesiii) statically indeterminate structures, the material of which is elastic and follows Hooke’s lawiv) any statically indeterminate structureThe correct answer is

Question 14. In the slope deflection equations, the deformations are considered to be caused byi) bending momentii) shear forceiii) axial forceThe correct answer is

Question 15. Select the correct statement

Question 16. A simply supported beam deflects by 5 mm when it is subjected to a concentrated load of 10 kN at its centre. What will be deflection in a 1/10 model of the beam if the model is subjected to a 1 kN load at its centre ?

Question 17. Independent displacement components at each joint of a rigid-jointed plane frame are

Question 18. The deflection at any point of a perfect frame can be obtained by applying a unit load at the joint in

Question 19. While using three moments equation, a fixed end of a continuous beam is replaced by an additional span of

Question 20. The thickness of the rectangular plate for the cap or base of a solid round steel columns, is calculated from the formulat = √[(9W/16 fbct) × D/(D -d)] where ‘d’ is