TGPSC HMWSSB Manager 2015 Paper 2 · Question 116

Question 116 of the TSPSC Manager (Engineering), HMWSSB, 2015: Paper 2 (Civil Engineering) (1 November 2015). Try it first, then open the answer and explanation.

1. Manager 2015 Paper 2 (Civil) · Q116 · Strength of Materials & Structural Analysis · Structural Analysis

   The symmetry of flexibility matrix is due to ______.

   1. Betty's theorem
   2. Maxwell's reciprocal theorem
   3. Eddy's theorem
   4. Castigliano's theorem
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   Answer: (2) Maxwell's reciprocal theorem

   Maxwell's reciprocal theorem states that the deflection at i due to a unit load at j equals the deflection at j due to a unit load at i, i.e. f_ij = f_ji, which is exactly the symmetry of the flexibility matrix. Eddy's theorem relates to arches and Castigliano's theorem to strain energy.

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