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Mechanical Properties of Fluids
Question
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Aerofils are so designed that the speed of air

  • on top side is more than on lower side

  • on top side is less than on lower side

  • is same on both sides

  • is turbulent

Answer

A.

on top side is more than on lower side

The aerofoils are so designed that

Pupper side < Plower side

So that the aerofils get a lifting force in upward direction

According to Bernoulli's theorem, where the pressure is large, the velocity will be minimum or vice-versa.

Thus vupper side > vlower side

Sponsor Area

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