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GK QUESTION#2941

For steady flow of an incompressible ideal fluid through a horizontal pipe, what happens to its speed and static pressure in a narrower section?

  1. ASpeed decreases, Pressure increases
  2. BSpeed increases, Pressure decreasesCorrect answer
  3. CBoth speed and pressure increase
  4. DBoth speed and pressure decrease
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Answer

B. Speed increases, Pressure decreases

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Explanation

For steady flow of an incompressible ideal fluid in a horizontal pipe, continuity requires greater speed in a narrower section. Bernoulli’s equation then gives a lower static pressure there. These assumptions matter to the result.

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