Fluid Flow and Conservation of Energy in Varying Cross-Sectional Area Pipes
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Questions and Answers

What is required to produce the acceleration of an incompressible fluid in a pipe of varying cross-sectional area?

  • A force exerted by the surrounding fluid (correct)
  • A decrease in fluid viscosity
  • An increase in fluid density
  • An increase in temperature of the fluid

According to Bernoulli's equation, what does the pressure difference between two points in a pipe relate to?

  • Velocity changes and elevation changes (correct)
  • Viscosity and compressibility
  • Frictional losses and pipe roughness
  • Density changes and temperature changes

In a steady flow of incompressible fluid through a pipe of varying cross-sectional area, what causes the velocity to change?

  • Viscosity of the fluid
  • Force of gravity
  • Friction between the fluid and the pipe walls
  • Equation of continuity (correct)

What did Swiss physicist Daniel Bernoulli develop in 1738 to relate pressure difference between two points in a pipe?

<p>Bernoulli's equation (C)</p> Signup and view all the answers

What does the pressure difference between two points in a pipe depend on, according to Bernoulli's equation?

<p>Velocity changes, elevation changes, and kinetic energy change (A)</p> Signup and view all the answers

According to Bernoulli's equation, what remains constant as we move along a streamline?

<p>All of the above (D)</p> Signup and view all the answers

What is the assumption made when applying the energy conservation principle in fluid flow?

<p>No energy is lost due to internal friction (A)</p> Signup and view all the answers

In Bernoulli's equation, what does the term 'pgh' represent?

<p>Potential energy per unit volume (A)</p> Signup and view all the answers

What happens to the lost kinetic energy of a fluid according to Bernoulli's equation?

<p>It gets converted into heat energy (C)</p> Signup and view all the answers

Why does Bernoulli's equation ideally apply to fluids with zero viscosity?

<p>Because it assumes no internal friction or energy loss (A)</p> Signup and view all the answers

What is the general expression that relates the pressure difference between two points in a pipe to velocity and elevation changes, according to the text?

<p>Bernoulli's equation (D)</p> Signup and view all the answers

What is required to produce the acceleration of an incompressible fluid in a pipe of varying cross-sectional area, as mentioned in the text?

<p>A force from the surrounding fluid is required (C)</p> Signup and view all the answers

What did Swiss physicist Daniel Bernoulli develop in 1738 to relate pressure difference between two points in a pipe?

<p>Bernoulli's equation (D)</p> Signup and view all the answers

In Bernoulli's equation, what does the term 'pgh' represent?

<p>Potential energy per unit volume (B)</p> Signup and view all the answers

According to the text, what happens to the lost kinetic energy of a fluid according to Bernoulli's equation?

<p>It is converted into potential energy (B)</p> Signup and view all the answers

According to Bernoulli's equation, what does the term 'pgh' represent?

<p>Change in gravitational potential energy (A)</p> Signup and view all the answers

What assumption is made when applying the energy conservation principle in fluid flow?

<p>No energy lost due to friction (B)</p> Signup and view all the answers

What does the pressure difference between two points in a pipe depend on, according to Bernoulli's equation?

<p>Flow velocity (B)</p> Signup and view all the answers

What is required to produce the acceleration of an incompressible fluid in a pipe of varying cross-sectional area?

<p>Pressure difference between two points (B)</p> Signup and view all the answers

What happens to the lost kinetic energy of a fluid according to Bernoulli's equation?

<p>Converted into heat energy (D)</p> Signup and view all the answers

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