Consider a laminar flow at zero incidence over a flat plate. The shear stress at the wall is denoted by τ w . The axial positions x 1 and x 2 on the plate are measured from the leading edge in the direction of flow. If x 2 > x 1 , then

Correct Answer is : τw|.x1>τw|.x2

\tau _{w}|._{x_{1}} = \tau _{w}|._{x_{2}} = 0

\tau _{w}|._{x_{1}} = \tau _{w}|._{x_{2}} \neq 0

\tau _{w}|._{x_{1}} > \tau _{w}|._{x_{2}}

\tau _{w}|._{x_{1}} < \tau _{w}|._{x_{2}}

GATE Mechanical Engineering (ME) 2017 Shift 2 Solved Paper

Question : 27 of 65

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Consider a laminar flow at zero incidence over a flat plate. The shear stress at the wall is denoted by τ_w. The axial positions x₁ and x₂ on the plate are measured from the leading edge in the direction of flow. If x₂ > x₁, then

$τ _{w}|._{x_{1}} = τ _{w}|._{x_{2}} = 0$
$τ _{w}|._{x_{1}} = τ _{w}|._{x_{2}} ≠ 0$
$τ _{w}|._{x_{1}} > τ _{w}|._{x_{2}}$
$τ _{w}|._{x_{1}} < τ _{w}|._{x_{2}}$

Validate

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