Fluid Flow 1. Turbulent flow is the breaking of streamlines into ripples (disorderly flow)? False Maybe True None of the above Question 1 of 36 2. Flow rate or equation of continuity is constant (k) across the tube flow? Yes No Maybe None Question 2 of 36 3. The volume of a fluid passing through a given section of a tube of flow per unit time is called? Mass flux Volume flux Flow rateweight fluxQuestion 3 of 36 4. Equation of continuity is the product between AREA and VELOCITY [AREAxVELOCITY] FALSE MAYBE TRUE NONE Question 4 of 36 5. Distinguish between steady flow and laminar flow? Steady flow is a flow that does not change over time.Laminar flow is smooth with layers of fluid sliding smoothly past each otherLaminar flow can be unsteady type of flowNone of the above Question 5 of 36 6. In laminar flow, fluid particles flow along a streamline? False True Maybe None Question 6 of 36 7. The equation of continuity/ flow rate for a non-viscous steady flow states that; - THE AREA OF CROSS-SECTION OF THE FLUID IS INVERSELY PROPORTIONAL TO THE VELOCITY OF THE FLUID. True False Maybe None Question 7 of 36 8. Distinguish between the streamline and turbulent flow? The velocity of streamline flow is less than critical velocity but in turbulent flow the velocity is greater than the critical velocity of the liquid. Streamline flow is laminar but turbulent flow is non-laminar. A streamline is an imaginary line and if you draw a tangent to it, you will get the direction of velocity but turbulent flow is a flow where streamlines are not parallel. None of the above Question 8 of 36 9. Uniform flow is defined as a type of flow in which acceleration is zero; velocity is constant? Yes No Maybe None Question 9 of 36 10. Eddies formed in turbulent flow are major cause of the energy loss in turbulent flow. True or false? False Maybe True NoneQuestion 10 of 36 11. Mention two types of flow? Streamline (steady) flow Turbulent flow Laminar flow uni flowQuestion 11 of 36 12. Define Bernoullis principle The sum of pressure, kinetic energy per unit volume and the potential energy per unit volume varies. The sum of pressure, kinetic energy per unit volume and the potential energy per unit volume is a constant. The sum of kinetic energy per unit volume and the potential energy per unit volume is a constant. None of the mentioned Question 12 of 36 13. State the Bernoullis effect? Provided a fluid is viscous, incompressible and its flow streamlined an increase in its velocity produces a corresponding decrease in the pressure it exerts. Provided a fluid is non-viscous, incompressible, and its flow is streamlined an increase in its velocity produces a corresponding increase in pressure it exerts. Provided a fluid is non-viscous, incompressible and its flow is streamlined an increase in its velocity produces a corresponding decrease in the pressure it exerts. None of the mentioned. Question 13 of 36 14. Eddies are lines of flow that form in zig-zag manner and rotate about their own axis. They are characteristic of which type of flow? Laminar flow Turbulent flow Steady flow None of the mentioned Question 14 of 36 15. Which of the following is Bernoullis equation? P + P x V x V + density x gH = CONSTANT (K) P + 1/2 PV + density x gH = K P + 1/2 x P x V x V + density x gH = K 1/2 PV + density x gH = KQuestion 15 of 36 16. Which of the following statements describe streamline flow? Streamlines do NOT cross each otherStreamlines are close together where the water is moving faster.Is a steady flowdisorderly flowQuestion 16 of 36 17. Ripples or eddies have a drag effect on the object moving through the fluid. True or False? True False Maybe None of the above Question 17 of 36 18. The Bernoullis equation in fluid dynamics is valid for? Incompressible fluid Non-viscous fluid Streamline fluid Visco-meter Question 18 of 36 19. Describe the shapes (bodies/objects) suited to streamline flow. They are: Designed in such a way they reduce drag resistance Designed in such a way that they easily cut through fluidsDesigned in such a way that they reduce the formation of eddies behind them.designed in such a way to reduce accidentsQuestion 19 of 36 20. Which of the following is a result caused by Bernoullis effect? If a light paper is held in front of the mouth and air blown horizontal over the paper, it will be observed that the paper gets lifted up. The spinning of a tennis ball Lifting a light ball using a funnel. taking a penalty kickQuestion 20 of 36 21. Briefly explain what shall happen when a fluid (non-viscous and steady) is flowing from a pipe of big cross-section area to a smaller one? Its velocity/speed decrease Its velocity/speed increases No effect at all Its velocity remains the sameQuestion 21 of 36 22. MASS FLUX = DENSITY x VOLUME FLUX (product of density and volume flux) True False Maybe None Question 22 of 36 23. Which of the following statements describes turbulent flow? It is the breaking of streamlines into ripples It is a disorderly flow It is the flow in which the speed and direction of the fluid particles passing any point vary with time.a smooth flowQuestion 23 of 36 24. Name the assumptions made on the fluid when deriving the equation of continuity? Non- viscous fluid Fluid is flowing steadily Fluid is incompressibleNone of the above Question 24 of 36 25. Which among the following is NOT an application of Bernoullis principle? Spray gun Aero foil Carburetor Loud speaker Question 25 of 36 26. What comprises a fluid? Liquids Gases Solids molten stateQuestion 26 of 36 27. Name the device for measuring the velocity of moving fluid? Pitot tube Visco-meter Pressure gauge Salinometer Question 27 of 36 28. Mention the hazards of Bernoullis effect? Blowing off of roof tops of houses Road accidents due to fast moving vehicleslifting of the aeroplane None of the mentioned.Question 28 of 36 29. The mass of the fluid that flows through a given section per unit time is called? Volume flux Flow rate Mass flux All of the aboveQuestion 29 of 36 30. What causes a fluid to flow? Pressure difference Density difference Energy Heat Question 30 of 36 31. VOLUME FLUX = CROSS SECTION AREA x DISTANCE False True Maybe None of the above Question 31 of 36 32. Name the device for measuring volume flux of a fluid? Volumetric meter Venturi meterPressure gauge Visco-meter Question 32 of 36 33. Shapes which produce eddies (turbulence) which offer a drag on the moving shapes are called? Streamlined shapes Laminar shapes Non-streamlined shapes Line of path Question 33 of 36 34. Briefly explain what shall happen when a non-viscous steady fluid is flowing from a pipe of small cross-section area to a bigger one? Its velocity/ speed decreases Its velocity/speed increases Its velocity remains the same No effect at all Question 34 of 36 35. Consider a ship that gives rise to more eddies and requires more effort to move it; is the ship designed for streamline flow? Yes No Maybe None Question 35 of 36 36. When fluid flow passes beyond a certain velocity known as critical velocity what sets in? Streamline flow Main stream Turbulence Laminar flow Question 36 of 36 Loading...
