AE201 Final eXAM| 191 questions| with complete solutions

We can often reduce the apparent complexity the general form of the conservation equations by: CORRECT ANSWERS: making justifiable assumptions. The approach of picking a few equations and hoping that they will apply is called: CORRECT ANSWERS: an ad hoc approach. Making justifiable assumptions and approximations in engineering problem solving often requires: CORRECT ANSWERS: a certain amount of skill and experience. When using Eulerian approach, the control volume will: CORRECT ANSWERS: Be fixed in space. The general set of equations that may explain the behavior in an engineering problem are called: CORRECT ANSWERS: governing equations. A starting point in solving an engineering problem is: CORRECT ANSWERS: the careful statement of the physical problem and a definition of the appropriate boundary conditions. How comprehensive and how detailed the model needs to be depends on: CORRECT ANSWERS: the type of problem that is encountered. Engineering problem solving is often approached by: CORRECT ANSWERS: dissecting the problem into smaller and more manageable parts. The modeling approach that considers a flow such that it contains the same group of fluid molecules is called: CORRECT ANSWERS: It is the convention that the unit normal vector always points the control volume. The three physical conservation principles are called: CORRECT ANSWERS: Conservation of mass, momentum, and energy. Given a steady fluid flow, the mass flow rate into the control volume must be the mass flow rate leaving the control volume. CORRECT ANSWERS: Equal to. Using the steady flow assumption to simplify the continuity equation, we will have: CORRECT ANSWERS: Time rate of change of mass inside the control volume is zero. A mass flux in a flow is a CORRECT ANSWERS: Density x velocity. The equation describing the conservation of mass for a fluid is called: CORRECT ANSWERS: the continuity equation