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GATE2018-1-34

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In a Lagrangian system, the position of a fluid particle in a flow is described as $x=x_0e^{-kt}$ and $y=y_oe^{kt}$ where $t$ is the time while $x_o, \: y_o$, and $k$ are constants. The flow is

  1. unsteady and one-dimensional
  2. steady and two-dimensional
  3. steady and one-dimensional
  4. unsteady and two-dimensional

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