B: Answer with True (T) or False (F). 4- Laminar flow when Viscosity Force larger than Initial Force. va 5- Hydraulic Grade Line for ideal fluid= ! + z+;= 2g 6- At Nozzle pressure=D0.
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- 35 + 9.81 (0.3824 - 7-2) = - 49.54 kPa. S. Chand Je oadall i.e.p =- 49.54 kPa. This shows that the given pressure at A, 35 kPa is gauge pressure and hence there is vacuum at point B. (Ans.) Example 6.5. An open circuit wind tunnel draws in air from the atmosphere through a well contoured nozzle. In the test section, where the flow is straight and nearly uniform, a static pressure tap is drilled into the tunnel wall. A manometer connected to the tap shows that the static pressure within the tunnel is 45 mm of water below atmosphere. Assume that air is incompressible and at pressure is 100 kPa (absolute). Calculate the velocity in the wind tunnel section (Refer to Fig. 6.6). Density of P.- 100 kPa water is 999 kg/m' and characteristic gas constant for V =0 air is 287 J/kg K. ساP حقوق النشر Test section 25°C. = 25°C (GATE)35 + 9.81 (0.3824 - 7-2) = - 49.54 kPa. S. Chand e oladall i.e.Pg =- 49.54 kPa. This shows that the given pressure at A, 35 kPa is gauge pressure and hence there is vacuum at point B. (Ans.) Example 6.5. An open circuit wind tunnel draws in air from the atmosphere through a well contoured nozzle. In the test section, where the flow is straight and nearly uniform, a static pressure tap is drilled into the tunnel wall. A manometer connected to the tap shows that the static pressure within the tunnel is 45 mm of water below atmosphere. Assume that air is incompressible and at pressure is 100 kPa (absolute). Calculate the velocity in the wind tunnel section (Refer to Fig. 6.6). Density of P.= 100 kPa water is 999 kg/m' and characteristic gas constant for V =0 air is 287 J/kg K. ساP حقوق النشر 25°C, Test section = 25°C (GATE)Constant density and non-viscuous fuid. turbulent static ideal isothermal
- At high flow rates the pressure drop increases directly with fluid velocity.TRUE OR FALSE Fluid’s speed must therefore be matched by a decreaseal in its pressure. Select one: True False The viscosity of a fluid is not related to the pumping power needed to transport a fluid in a pipe or to move a body (such as a car in air or a submarine in the sea) through a fluid. Select one: True False Equilibrium condition is important in Buoyancy. Select one: True False1. A pressure gauge attached to a pipe is reading 1.34 m of Hg at a place where the atmospheric pressure is 10.33 m of water. The approximate absolute pressure at the mountain isa. 930 kPab. 181 kPac. 280 kPad. 100 kPa 2. The flow is said to be unsteady and non-uniform when,a. The flow velocity is not changing with time but changing with spaceb. The flow velocity is changing with both time and spacec. The flow velocity is changing with time but not changing with spaced. The flow velocity is not changing with both time and space 3. The below figure shows a pipe with a circular cross section of diameter D mm on the left end and a square cross section with side D mm on the right end. Mercury enters the left end with a velocity 1 cm/s and leaves the right end with a velocity V2. Find V2 (neglect losses in the pipe).a. Cannot be find since length is not givenb. Cannot be find since diameter is not givenc. 7.85 mm/sd. 12.73 mm/s 4. 1 kg water is flowing through an inclined pipe at…A2: FLUID FLOW, FLOW RATE & PRESSURE DROPProblem:6. At sea level, atmospheric pressure is 14.7 psia (101 325 Pa). A bicycle tire (at sea level) is inflated to 50 psi (344 737 Pa). Determine the gauge and absolute pressures in the inflated tire.
- Water passed at the same velocity through two pipes of the same length and diameter. The friction factor for a rough pipe is f1 and that for a smooth pipe is f2. Pick out the wrong statement. a. f1 > f2b. None of thesec. Insufficient datad. f1 = f2Q.1. A large tank contains air, gasoline (pc= 680 kg/m³), light oil (p= 800 kg/m³) and water. The pressure p of the air is 150 kPa gauge. If we neglect friction, what is the mass flow rate of oil from a 20- mm-diameter jet? 1₁-2m Air Gasoline 8G Water- 90 Oil.. d. 20 mm #i 2-3mQl:- A 80 mm diameter of pipes and 300 mm long slides by its own weight of 1.7 kN inside a large cylinder of 80.2 diameter. The clearance between the eylinder and pipe is filled with oil of 5 stokes viscosity and s.g 0.92, find the velocity of sliding the pipe.
- Which statement is FALSE? A pump is a machine that is used to provide energy to a flowing fluid. Laminar flow is described like honey flowing out of a container or lava flow. Turbulent flow is characterized by intense cross-stream mixing. Bernoulli's Equation states that without friction, the sum of the piezometric pressure and kinetic pressure varies along a streamline for the steady flow of an incompressible, inviscid fluid.(c) What is the relationship between the pressures at point A and point B? A and B are at the same elevation. The pocket is isolated from the main lake. PA > PB PA = PB PA< PB Not enough information Lake Pressure Kinetic energy " A Underground pocket of water (d) If the dissipation is negligible for a pipe flow, what remains nearly constant? Gravitational potential Sum of all three1) Find the difference in pressure between tanks A and B if d;=300mm, d2=150mm, d;-460mm, -Air da=200 mm and S.GHG =13.6 Yw=9.80 kN/m 45 Water -Mercury