Important RGPV Question
CE-604(A), Fluid Mechanics–II,
VI Sem, CE
UNIT 1- Turbulent Flow
Q.1 Explain briefly a pilot tube with neat sketch diagram and also discuss its measurement of velocity. (RGPV MAY 2024)
Q.2 Derive Euler’s equation of motion along a streamline and hence derive Bernoulli’s theorem. (RGPV MAY 2024)
Q.3 Explain the total energy line (energy gradient line) and the hydraulic gradient line for fluid flow through a piping system. (RGPV MAY 2024)
Q.4 Differentiate between the Eulerian and Lagrangian method of representing fluid motion. (RGPV MAY 2024)
Q.5 State the principle of pressure measurement by manometer. Explain the difference between a simple and a differential manometer. (RGPV MAY 2024)
Q.6 Explain in brief: (RGPV MAY 2022)
Specific weight
Cohesion
Capillarity
Q.7 Describe in brief Reynolds experiment for determining critical velocity in pipe flow. (RGPV MAY 2022)
Q.8 What is meant by Turbulence? How does it affect the flow properties? (RGPV MAY 2022)
Q.9 Derive continuity equation for a three-dimensional steady or unsteady flow in a Cartesian coordinate system. (RGPV MAY 2022)
Q.10 With the help of a diagram explain streamlines, equipotential lines and flow net. Prove that equipotential lines and streamlines intersect each other orthogonally.
Q.11 Two velocity components are given. Find the third component such that they satisfy the continuity equation.
u = x3 + y2 + 2z2 ; v = -x2y + yz – xy
(RGPV MAY 2022)
Q.12 Derive Euler’s equation of motion along a streamline and hence derive Bernoulli’s theorem. (RGPV MAY 2022)
Q.13 Differentiate between steady and unsteady flow. (RGPV MAY 2022)
UNIT 2-Uniform Flow in Open Channels
UNIT 3-Non Uniform Flow in Open Channels
UNIT 4-Forces on Immersed Bodies
Q.1 Calculate the friction drag on a plate 15 cm wide and 45 cm long placed longitudinally in a stream of oil (specific gravity 0.925 and kinematic viscosity 0.9 stokes) flowing with a free stream velocity of 6 m/s. Also find the thickness of the boundary layer and shear stress at the trailing edge. (RGPV MAY 2024)
Q.2 A wooden block floats in water with 5 cm height projecting above the water surface. The block is next launched in glycerin (relative density = 1.35) and projects 7.5 cm above the surface of glycerin. Make calculations for the height of block and its relative density. (RGPV MAY 2024)
Q.3 State and prove Pascal’s law and give some examples where this principle is applied. (RGPV MAY 2024)
Q.4 The velocity potential for a two-dimensional flow is Φ = x (2y – 1) Determine the velocity at point P(4,5). Also obtain the value of stream function at this point. (RGPV MAY 2024)
Q.5 What is pressure head? How pressure can be expressed in terms of height of a liquid column. (RGPV MAY 2024)
Q.6 What do you understand by the boundary layer? Explain the development of boundary layer along a thin flat plate held parallel to uniform flow. (RGPV MAY 2022)
Q.7 Define a fluid and distinguish between compressible and incompressible fluids. (RGPV MAY 2022)
Q.8 Discuss the application of fluid mechanics to flow of blood in veins and pumping action of heart. (RGPV MAY 2022)
UNIT 5-Fluid Machines
Q.1 Find the smallest diameter of a manometer tube such that error due to capillary action in the measured gauge pressure of 100 N/m² is less than 5 percent. The manometric liquid is water. (RGPV MAY 2024)
Q.2 Explain the working of reciprocating pump. (RGPV MAY 2024)
Q.3 Explain briefly reaction turbine with neat sketch diagram. (RGPV MAY 2022)
Q.4 Explain the total energy line (energy gradient line) and the hydraulic gradient line for fluid flow through a piping system. (RGPV MAY 2022)
EXTRA QUESTIONS
Q.1 Write a note on the historical development of fluid mechanics. (RGPV MAY 2024)
Q.2 Discuss the concept that “a fluid continues to deform so long it is acted upon by a shear force”. (RGPV MAY 2024)
Q.3 What should be the diameter of a droplet of water if the pressure inside is to be 0.0018 kgf/cm² greater than the outside? (Surface tension = 0.0075 kgf/m) (RGPV MAY 2022)
Q.4 For laminar flow of an oil having dynamic viscosity 1.766 Pa.s in a 0.3 m diameter pipe, velocity distribution is parabolic with max velocity 3 m/s. Calculate shear stresses at pipe wall and at 50 mm from pipe wall. (RGPV MAY 2022)
Q.5 A barometer shows 75 mm of mercury on surface of lake. Calculate the absolute pressure at a depth of 4 m. (RGPV MAY 2022)
— Best of Luck for Exam —
