TGPSC HMWSSB Manager 2015 Paper 2 · Question 67

Question 67 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) · Q67 · Fluid Mechanics & Hydraulics · Fluid Mechanics

   Existence of velocity potential implies that

   1. Fluid is in continuum
   2. Fluid is irrotational
   3. Fluid is ideal
   4. Fluid is compressible
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   Answer: (2) Fluid is irrotational

   If u = −∂φ/∂x, v = −∂φ/∂y, w = −∂φ/∂z, every rotation component such as ½(∂v/∂x − ∂u/∂y) becomes zero, so a velocity potential can exist only for irrotational flow.

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