AE160.Q5.Mom.ans.docx - Dr Nikos J Mourtos \u2013 AE 160 \u2013 Aerodynamics I \u2013 Quiz 5 \u2013 Momentum \u2013 51 points Closed Book 1 Page of Notes Allowed with

AE160.Q5.Mom.ans.docx - Dr Nikos J Mourtos – AE 160 –...

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Dr. Nikos J. Mourtos – AE 160 – Aerodynamics I – Quiz 5 – Momentum – 51 pointsClosed Book / 1 Page of Notes Allowed with no solved problemsStudent Name:For questions 1 through 4 circle the correct answer:1 (5 points). The Momentum equation:A.Expresses a relationship between energy and work.B.Relates momentum per unit volume for two points on a streamline.C.Requires that Newton’s 2ndlaw of motion be satisfied for a system offluid particles.D.Relates mass flow rate along a stream tube.E.Does all of the above.F.Does none of the above.2 (5 points). A pressure force:A. Is a body force.B. Acts normal to a surface.C. Is a frictional force.D. Acts parallel to a surface.3 (5 points). Shear stress in fluid flow is proportional to:A.Velocity.B.The square of velocity.C.The velocity gradient in the direction of flow.D.The velocity gradient normal to the flow.E.The difference in velocity.4 (5 points). To calculate the force on an object submerged in a flow weneed to:A.Include the body itself inside the control volume.
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