Fluid Mechanics Final Exam Review – All Questions & Answers (Graded A+)

Fluid Mechanics Final Exam Review – All Questions & Answers (Graded A+) Fluid Mechanics Final Exam Review – All Questions & Answers (Graded A+) The surface force acting on a differential surface element shown in the figure is the ___________ product of a stress tensor and the unit outward normal vector. - ANSWER - contracted __________ equation is an approximate relation between pressure, velocity, and elevation, and is valid in regions of steady, incompressible flow where net frictional forces are negligible. Newton's Navier-Stokes Andrade's The Bernoulli - ANSWER - The Bernoulli For steady and single-stream flow, where 1 and 2 denote the inlet and the outlet, respectively. Select the correct equations reflecting the mass balance. (Check all that apply) m1 = constant p1*V1*A1 = p2*V2*A2 p1*V1*A1 = 0 m1 = m2 - ANSWER - m1 = m2, p1*V1*A1 = p2*V2*A2, In fluid mechanics, Newton's second law is usually referred to as the _______ equation. conservation of energy linear momentum Bernoulli angular momentum - ANSWER - Linear momentum The conservation relations are also called __________ equations since any conserved quantity must balance during a process. - ANSWER - balance The conservation of energy principle requires that the change in the energy content of a system be ________ the net energy transfer to or from the system during a process. less than more than independent of equal to - ANSWER - equal to In a water-cooled nuclear reactor, the reactor core must be always filled with water. if the reactor converts 20 kg of water to steam every second, select the acceptable scenarios from the following. Two pumps with an output mass flow rate of 10kg/s each are to be used to keep the core full. Two pumps with output mass flow rate of 5kg/s each are to be to keep the core full A pump with an output mass flow rate of 10kg/s is to be used to keep the core full. A pump with an output mass flow rate of 20kg/s is to be used to keep the core full. - ANSWER -