Fluid Mechanics and Heat Transfer Quiz

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Questions and Answers

What is the primary focus of transport phenomena?

  • Mass transfer only
  • Heat transfer only
  • Transport or movement of a given property by molecular movement (correct)
  • Momentum transfer only

Which of the following is not a transported property in transport phenomena?

  • Thermal energy
  • Mass
  • Momentum
  • Electricity (correct)

Where can one find publications related to transport phenomena?

  • Online journals
  • Bookstores
  • Libraries and as e-Books (correct)
  • Research institutions

Which author wrote 'Heat Transfer: A Practical Approach'?

<p>Y.A. Çengel (C)</p> Signup and view all the answers

What is the title of the book written by J.M. Coulson, J.F. Richardson, J.R. Backhurst, and J.H. Harker?

<p>Chemical Engineering (D)</p> Signup and view all the answers

How many edition of 'Heat Transfer' is written by J.P. Holman?

<p>10th (C)</p> Signup and view all the answers

What is the value of the error function at λ = 0?

<p>0 (B)</p> Signup and view all the answers

What is the complementary error function?

<p>1 - erf(λ) (A)</p> Signup and view all the answers

What is the relationship between the error function and λ?

<p>erf(-λ) = -erf(λ) (A)</p> Signup and view all the answers

What is the thermal penetration thickness δT?

<p>The distance x for which the temperature dropped to a value of 0.01(Ts - Ti) (C)</p> Signup and view all the answers

When does the error function reach a value of 0.99?

<p>When λ is about 2 (D)</p> Signup and view all the answers

What is the condition for using the semi-infinite solid solution?

<p>When δT is small with respect to the plate thickness L (C)</p> Signup and view all the answers

What type of flow is characterized by the entrance region?

<p>Laminar (A)</p> Signup and view all the answers

What is the primary application of the equations of change in the context of fluid flow?

<p>Laminar and turbulent flow (D)</p> Signup and view all the answers

What type of heat transfer is characterized by a constant wall temperature?

<p>Heat flux (D)</p> Signup and view all the answers

What is a common application of the equation of thermal energy?

<p>Heat exchangers (D)</p> Signup and view all the answers

What type of flow is characterized by a boundary layer?

<p>Boundary layer (D)</p> Signup and view all the answers

What is a common application of convection heat transfer?

<p>Heat exchangers (A)</p> Signup and view all the answers

What is internal energy associated with in a substance?

<p>molecular motion, chemical energy, surface energy, and energy stored in an electric condenser or battery (A)</p> Signup and view all the answers

What is the effect of an increase in internal energy in a substance?

<p>an increase in temperature (B)</p> Signup and view all the answers

What is the equation for the change in internal energy in a closed system?

<p>Q - W = U2 - U1 (D)</p> Signup and view all the answers

What is true about isolated systems?

<p>Q = 0, W = 0 (C)</p> Signup and view all the answers

What is the equation for the energy balance in a reversible process?

<p>δQ - δW = dU (A)</p> Signup and view all the answers

What is the equation for the enthalpy change in a reversible, constant pressure process?

<p>Q = ΔH (D)</p> Signup and view all the answers

What is assumed to be constant across the boundary layer?

<p>Pressure across the boundary layer (A)</p> Signup and view all the answers

Which of the following is NOT a boundary condition for the temperature profile?

<p>vx = v∞ at y = ∞ (C)</p> Signup and view all the answers

What is the main assumption for neglecting vy terms in the Navier-Stokes equation y-component?

<p>vy is much smaller than vx (D)</p> Signup and view all the answers

What is the simplification used for the boundary layer equation of motion x-component?

<p>∂2vx/∂x2 is negligible (D)</p> Signup and view all the answers

Who developed an exact solution for the boundary layer momentum equation?

<p>Blasius (D)</p> Signup and view all the answers

What is the purpose of the boundary layer assumption that the boundary layer is thin?

<p>To show that ∂2vx/∂x2 is much smaller than ∂2vx/∂y2 (D)</p> Signup and view all the answers

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