Important RGPV Question
CE- 501 Fluid Mechanics-I
V Sem, CE
UNIT 1-Review of Fluid Properties
Q.1) Explain the following terms in details:
i) Viscosity
ii) Compressibility
iii) Surface Tension
iv) Capillarity
(RGPV Dec 2020)
Q.2) An inverted differential manometer is connected to two
points A and B which convey water. The fluid in
manometer is oil of sp. gravity 0.8. For the manometer
readings shown in the figure, find the pressure difference
between A and B. (RGPV Dec 2020)
Q.3) A rectangular plate which is 2m wide and 3 meter long is
immersed vertically in a fluid of relative density 1.6 in
such a way that its 2 meter side is kept horizontal. Plate is
kept 1.0 meter below the free surface of water. Find the
total pressure on the plate.
(RGPV Dec 2020)
Q.4) Derive an expression for total pressure and center of
pressure on an inclined plane surface submerged in the
liquid.
Q.5)
Q.6)
Q.7)
Q.8)
Q.9)
Q.10)
UNIT 2- Kinematics of Flow
Q.1) The velocity potential for a two-dimensional flow is,
x(2y–1). Determine the velocity at the point P(4,5). Also
obtain the value of stream function at this point P.
(RGPV Nov 2023)
Q.2) With the help of a diagram explain Stream lines,
equipotential lines and flow net. Prove that equipotential
lines and stream lines intersect each other
orthogonally.
Q.3)
Q.4)
Q.5)
Q.6)
Q.7)
Q.8)
Q.9)
Q.10)
UNIT 3-Dynamics of Flow
Q.1) Derive Euler’s equation of motion along a stream line
and hence derive the Bernoull’s theorem.
(RGPV Nov 2023)
Q.2) What is venturimeter? Write the formula for calculation
the flow from venturimeter.
Q.3)
Q.4)
Q.5)
Q.6)
Q.7)
Q.8)
Q.9)
Q.10)
UNIT 4- Laminar Flow
Q.1)
Q.2)
Q.3)
Q.4)
Q.5)
Q.6)
Q.7)
Q.8)
Q.9)
Q.10)
UNIT 5- Dimensional Analysis and use of Buckingham-pi theorem
Q.1)
Q.2)
Q.3)
Q.4)
Q.5)
Q.6)
Q.7)
Q.8)
Q.9)
Q.10)
EXTRA QUESTIONS-
Q.1) What should be the diameter of a droplet of water. If the
pressure inside is to be 0.0018 kg(f)/cm2 greater than the
outside? Given the value of surface tension of water in
contact with air at 20°C as 0.0075 kg(f)/m.
(RGPV Nov 2023)
Q.2) For laminar flow of an oil having dynamic viscosity
u = 1.766 Pa.s in a 0.3m diameter pipe, the velocity
distribution is parabolic with a maximum point velocity
of 3 m/s at the center of the pipe. Calculate the shear
stresses at the pipe wall and within the fluid 50mm from
the pipe wall.
Q.3) Define the following:
i) Buoyancy and Center of buoyancy
ii) Meta Center and Meta centric Height
Q.4) What is the relation between gauge pressure, absolute
pressure, vacuum pressure and atmospheric pressure.
Q.5) Define a fluid and distinguish between compressible and
incompressible fluids.
Q.6) Differentiate between the following:
i) Newtonian and Non-Newtonian Fluid
ii) Ideal and Real Fluid
iii) Rotational and Irrotational flow
Q.7) The pressure drop Δp, along a straight pipe of diameter D
has been experimentally studied, and it is observed that
for laminar flow of a given fluid and pipe, the pressure
drop varies directly with the distance I, between pressure
taps. Assume that Δp is a function of D, I, the velocity V,
and the fluid viscosity μ. Use dimensional analysis to
deduce how the pressure drop varies with pipe diameter.
Q.8) A 40 cm diameter pipe, conveying water branches into
two pipes of diameters 20 cm and 25 cm respectively. If
the average velocity in the 40 cm diameter pipe is
20 m/s, find the discharge in this pipe. Also determine
the velocity in 25 cm pipe if the average velocity in 20 cm
diameter pipe is 15 m/s.
Q.9)
Q.10)
— Best of Luck for Exam —
