TGPSC HMWSSB Manager 2015 Paper 2 · Question 66

Question 66 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) · Q66 · Fluid Mechanics & Hydraulics · Fluid Mechanics

   In a three dimensional motion of a fluid, the component of rotation about the x-axis, ω_x is

   1. (1/2)(∂w/∂y - ∂v/∂z)
   2. (1/2)(∂u/∂z - ∂w/∂y)
   3. (1/2)(∂v/∂x - ∂u/∂y)
   4. (1/2)(∂v/∂x - ∂w/∂y)
   Show answer

   Answer: (1) (1/2)(∂w/∂y - ∂v/∂z)

   Rotation about the x-axis involves only the velocities in the y-z plane: ω_x = ½(∂w/∂y − ∂v/∂z); option (3) is ω_z.

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