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GATE2018-1-9

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For a wo-dimensional incompressible flow field given by $\overrightarrow{u} = A(x \hat{i} - y \hat{j}), \text{ where } A>0$, which one of the following statements is FALSE?

  1. It satisfies continuity equation
  2. It is unidirectional when $x \rightarrow 0$ and $y \rightarrow \infty$
  3. Its streamlines are given by $x=y$
  4. It is irrotational
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