TGPSC HMWSSB Manager 2015 Paper 2 · Question 83

Question 83 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) · Q83 · Environmental Engineering · Water Supply

   In network of pipes

   1. The algebraic sum of discharges around each circuit is zero
   2. The algebraic sum of head losses around each circuit is zero
   3. The elevation of hydraulic grade line is assumed for each junction point
   4. Elementary circuits are replaced by equivalent pipes
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   Answer: (2) The algebraic sum of head losses around each circuit is zero

   In a pipe network (Hardy Cross method), the algebraic sum of head losses around every closed circuit (loop) must be zero, because the pressure head at a junction has a single value; the algebraic sum of discharges is zero at each junction (continuity), not around a circuit.

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