Statical Moment a. b. (4) C. d. (8) 26. Select the correct statements about a co

Question

Statical Moment a. b. (4) C. d. (8) 26. Select the correct statements about a continuous 29. stat beam having two equal spans, supporting a uniform load on both spans. negative i) The point of inflection occurs over the middle support. ii) The beam is statically indeterminate. 30. Strain a. (3) b. (5) c. (4) d. (8) iv) The moment at the end supports is equal to zero v) The moment diagram for the two spans is a. b. c· d· comprise of parabolic curves i, ii, and iv ii, lii and v i,iii, iv and v i,ii and v 31. Poisson Ratio b. (5) C. d. (3) 27. The point of inflection of a beam is? a. b. C. d· The point of maximum moment The point of zero moment The point of maximum shear The point of zero shear A number of definitions are given below. Match each word with its correct definition. 1. The ratio of unit lateral strain to longitudinal strain. The algebraic sum of forces on one side of a 2. 3. 4. 5. 6. 7. beam section The product of an area times the distance from the centroid of the area to a given axis. The line of a beam cross section which has neither compressive nor tensile stresses The tendency of a body to rotate about a given axis. Internal resistance to an external force. The stress resulting from two forces acting on a body in opposite directions, but not in the same line. Total change in length divided by the original length 8. 28. Vertical Shear a. (2) b. (6) c. d. (7)

Explanation / Answer

(26) C.

statement (i) is correct.
statement (ii) is incorrect.

The point of inflection occurs at some distance from the middle support.

statement (iii) is correct.
statement (iv) is correct
statement (v) is correct. The moment diagram for any beam supporting a uniform load is a parabola.

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