Question
A
B
C
D
In order to measure the flow with a
Venturimeter, it is installed in a
in any direction and in any location
horizontal line
vertical line
inclined line with flow upwards
Answer : A
Question
A
B
C
D
A rotameter is used to measure
velocity of fluids
flow of fluids
velocity of gases
specific gravity of liquids
Answer : B
Question
The value of coefficient of discharge is
.....the value of coefficient of velocity for an
orifice.
A
B
C
D
same as
more than
less than
None of the above
Answer : C
Question
Pizometric head is the addition of
…………
A
Pressure head, kinetic head
Kinetic head and datum head
C
Pressure head and datum head
D
None of above
Answer : C
Question
A
B
C
D
The distance between H.G.L. and T.E.L is
shown by …………head.
Pressure
Datum
Velocity
Total
Answer : C
Question
A
B
C
D
As per Bernoulli’s theorem, the sum of
pressure head, velocity head and datum
head for ideal fluid…………
Changes point to point
Increase in the direction of flow
Decrease in the direction of flow
Remains constant
Answer : D
Question
The modified Bernoulli’s equation =
Total head plus ……………
A
Pressure head
B
Velocity head
C
Datum head
D
Head loss
Answer : D
Question
The “throat” is the component part of
……………..
A
Venturimeter
B
Orifice
C
Pitot tube
D
Nozzle meter
Answer : A
Question
At vena contracta fluid jet is having
…………diameter than diameter of orifice.
A
Less
B
More
C
Equal
D
Half
Answer : A
Question
A
B
C
D
Mouthpiece is used to minimize the
effect of ………………..
Vena contracta
Velocity of approach
End contraction
Variation of pressure
Answer : A
Question
A
B
C
D
To measure the discharge of river most
suitable device will be………….
Notch
Weir
Venturiflume
venturi meter
Answer : B
Question
A
B
C
D
A pipe of length more than double the
diameter of orifice fitted externally or
internally to the orifice is called a
Notch
Weir
Mouthpiece
Nozzle
Answer : D
Question
A
B
C
D
In an internal mouthpiece, if the jet
after contraction does not touch the
sides of the mouthpiece, then the
mouthpiece is said to be
Running full
Running free
Partially running full
Partially running free
Answer : B
Question
A
B
C
D
The value of coefficient of velocity for a
sharp edged orifice __________ with
the head of water.
Decreases
Increases
Depends on diameter of orifice
Depends on type of orifice
Answer : B
Question
A
B
C
D
An orifice is said to be large, if
The size of orifice is large
The velocity of flow is large
The available head of liquid is more than 5
times the height of orifice
The available head of liquid is less than 5 times
the height of orifice
Answer : C
Question
A
B
C
D
When a liquid is flowing through a pipe
with a velocity of V , the total energy in
the flowing fluid is
Kinetic energy
Potential energy
Elevation energy
All of above
Answer : D
Question
A
B
C
D
Which direction must a Pitot tube face
in order to calculate the speed of a
fluid?
Direction is not a criteria
Normal to the flow only.
Both normal to the flow and parallel to the
flow.
Parallel and facing flow
Answer : D
Question
Which one of the following
statements is true ?
A
B
C
D
The value of kinetic energy correction factor
for turbulent flow lies between 1.03 to 1.06
The value of kinetic energy correction factor
for laminar flow is 2
The practical value of kinetic energy
correction factor for turbulent flow is unity
All the above.
Answer : D
Question
A
B
C
D
Flow of water in pipes of diameter more
than 3 meters, can be measured by
Pitot tube
Venturimeter
Orifice plate
Rotameter.
Answer : D
Question
A
B
C
D
Hydraulic coefficient of an orifice means
the coefficient of
Velocity
Contraction
Resistance
all the above.
Answer : D
Question
A
B
C
D
A weir is used to measure the large
water discharge rate from a river or
from an open channel. A weir is not of
__________ shape.
Circular
Rectangular
Triangular
Trapezoidal
.
Answer : A
Question
A
B
C
D
With increase in the ratio of orifice
diameter to pipe diameter in case of an
orificemeter, the overall pressure loss
Decreases
Increases
Remains constant
Increases linearly
Answer : C
Question
A
B
C
D
The discharge formula through orifice,
Q = Cd2gH x A is known as
Actual velocity
Actual discharge
Theoretical discharge
None of above
Answer : B
Question
A
B
C
D
Flow rate of high velocity flue gas
discharged through a stack to the
atmosphere can be most conveniently
measured by a
Pitot tube
Manometer
Rotameter
None of these
Answer : A
Question
A
B
C
D
In an external mouthpiece, the absolute
pressure head at vena contracta is
__________ the atmospheric pressure
head by an amount equal to 0.89 times
the height of the liquid, above the vena
contracta.
1V-A4
More than
Equal to
None of the above
Answer : A
Question: The study of motion of fluid with forces
which causes the flow is known as
A
B
C
D
fluid kinematics
fluid dynamics
fluid statics
none of the above
Answer : B
Question
A
B
C
D
Which of the following statement is
wrong?
A flow whose streamline is represented by a
curve, is called two dimensional flow.
The total energy of a liquid particle is the sum
of potential energy, kinetic energy and pressure
energy.
The length of divergent portion in a
venturimeter is equal to the convergent
portion.
A pitot tube is used to measure the velocity of
flow at the required point in a pipe.
Answer : C
Question
A
B
C
D
The discharge over a triangular notch is
inversely proportional to H3/2
directly proportional to H3/2
inversely proportional to H5/2
directly proportional to H5/2
Answer : D
Question: In dynamics of fluid flow the flow mainly
depends on the
A
hydrostatic law
B
Newton’s law
C
conservation of energy
D
Darcy’s law
Answer : B
Question: The study of motion of fluid with forces
which causes the flow is known as
A
fluid kinematics
B
fluid dynamics
C
fluid statics
D
none of the above
Answer : B
Question
A
B
C
D
In fluid dynamics which of the following
forces are predominant
pressure
gravity
viscous and surface tension
all the above
Answer : D
Question
A
B
C
D
The equation for Reynolds number is
m.a = Fg+ Fp+ Fv
m.a = Fg+ Fp+ Fv+ Ft+ Fc
m.a = Fg+ Fp+ Fv+ Ft+ Fc+ Fs
m.a = Fg+ Fp+ Fv+ Ft
Answer : D
Question
A
B
C
D
The equation for Euler’s number is
m.a = Fg+ Fp+ Fv
m.a = Fg+ Fp+ Fv+ Ft+ Fc
m.a = Fg+ Fp+ Fv+ Ft+ Fc+ Fs
m.a = Fg+ Fp
Answer : D
Question
A
B
C
D
The equation for Navier-stokes number
is
m.a = Fg+ Fp+ Fv
m.a = Fg+ Fp+ Fv+ Ft+ Fc
m.a = Fg+ Fp+ Fv+ Ft+ Fc+ Fs
m.a = Fg+ Fp
Answer : A
Question
A
B
C
D
Rise or Fall of HGL in the direction of
flow depends on …..
change in velocity
change in pressure
change in temperature
all of the above
Answer : B
Question
A
B
C
D
For real fluid the TEL is ……. With the
direction of flow
vertical
curvilinear
inclined
none of the above
Answer : B
Question
A
B
C
D
For drawing HGL which of the following
is attached to pipeline.
barometer
piezometer
pressure gauge
none of the above
Answer : B
Question
A
B
C
D
Venturimeter consists of which
components
throat
converging and diverging cone
both of above a &b
none of the above
Answer : C
Question
A
B
C
D
The diameter of the inlet section of
venturimeter will be
half of pipe diameter
twice of pipe diameter
one-third of pipe diameter
same as that of pipe
Answer : D
Question
A
B
C
D
The tapered portion from pipe to throa
is known as
converging cone
diverging cone
throat
none of the above
Answer : A
Question
A
B
C
D
The maximum angle of converging cone is
60
200
100
none of the above
Answer : B
Question
A
B
C
D
The diameter of throat is generally
taken as
half of pipe diameter
twice of pipe diameter
one-third of pipe diameter
same as that of pipe
Answer : A
Question
A
B
C
D
When an internal mouthpiece is running
free, the discharge through the
mouthpiece is (where a = Area of
mouthpiece, and H = Height of liquid
above the mouthpiece)
0.5 a√2gH
0.707 a√2gH
0.855 a√2gH
a√2gH
Answer : A
Question
A
B
C
D
Re-entrant or Borda's mouthpiece is an
__________ mouthpiece.
Internal
External
Convergent
Divergent
.
Answer : A
Question
A
B
C
D
When the coefficient of discharge (Cd) is
0.623, then the general equation for
discharge over a rectangular weir is
1.84(L - 0.1nH)H3/2
1.84(L - nH)H2
1.84(L - 0.1nH)H5/2
1.84(L - nH)H3
Answer : A
Question
A
B
C
D
The difference between the notch and
weir is that the notch is of bigger size
and the weir is of a smaller size.
Agree
Disagree
There is no difference
Weir is used for river and notch for pipes
Answer : B
Question
A
B
C
D
The most serious disadvantage of an
orificemeter is that
It is not very accurate.
It is very costly.
Most of the pressure drop is not recoverable.
It is very small
Answer : C
Question
A
B
C
D
Which of the following relationship is
valid for the equilibrium position of the
float in a rotameter ?(where, Df= Drag
force on the float Bf = Buoyant force on
the float Wf = Weight of the float)
Df + Bf = Wf
Df = Bf + Wf
Df + Bf + Wf =0
none of these
Answer : A
Question
Though angle of deviation of liquid is
more in internal mouth piece, the contraction of the
jet, is
A
More in the internal mouth piece
B
Less in the internal mouth piece
C
Equal to external mouth piece
D
None of these.
Answer : A
Question
Water flows through a convergent
mouthpiece of diameter 4 cm at convergence under a
head of 3 metres. If the maximum vacuum pressure is
9 metres of water, the maximum diameter of
divergence, to avoid separation of flow, is
A
4 cm
B
6 cm
C
2 cm
D
23 cm.
Answer : C
Question
A
B
C
D
Fig shows a venturimeter having inlet
&throat area of 0.07 m2 &0.01767m2
carrying oil of Sp gr 0.9 in upward
direction. If the manometric deflection
is 25 cm the discharge of oil is
0.18 2m3/s
0.351m3/s
0.148m3/s
1.5m3/s
Answer : C
Question
A
B
C
D
A 4 cm diameter orifice in the vertical
side of the tank discharges water. The
water surface in the tank is at a constant
level of 2.0 m above the centre of
orifice. If head loss in the orifice is 0.20
m and the co-efficient of contraction is
0.63, determine the discharge through
the orifice, if Cv = 0.95.
0.001 m3/s
0.0047 m3/s
2.5 m3/s
0.03m3/s
Answer : B
Question:At a section A in the horizontal pipe , the
diameter 6 cm pressure 80 kN/m2and velocity
is 32 m/s. The total energy of A is ……..
A
B
C
D
18.9 m
50.6 m
56.2 m
60.4 m
Answer : D
Question:A 4 cm diameter orifice in the vertical side of
the tank discharges water. The water surface in
the tank is at a constant level of 2.0 m above
the centre of orifice. If head loss in the orifice is
0.20 m and the co-efficient of contraction is
0.63, determine the value of coefficient of
discharge.
A
B
C
D
0.98
0.65
0.59
0.75
Answer : C
Question:A 4 cm diameter orifice in the vertical side of
the tank discharges water. The water surface in
the tank is at a constant level of 2.0 m above
the centre of orifice. If head loss in the orifice is
0.20 m and the co-efficient of contraction is
0.63, determine the discharge through the
orifce, if Cv= 0.95
A
B
C
D
0.001 m3/s
0.0047 m3/s
2.5 m3/s
0.03 m3/s
Answer : B
Question: Oil flows through a 25 mm diameter
orifice under a head of 5.5 m at a rate of 3 lps.
The jet strikes at a wall 1.5 m away and 120 mm
vertically below the center line of the
contracted jet. Calculate the co-efficient of
discharge.
A
B
C
D
0.58
0.66
0.75
0.90
Answer : A
Question:A 10 cm diameter pipe has a nozzle at its
end. If the velocity in the pipe is 2.5 m/s and
the pressure is 50 kpa, determine the velocity
of jet. Consider Cv= 0.98
A
B
C
D
0.911 m/s
10.11 m/s
15.23 m/s
0.112 m/s
Answer : B
Question:A 10 cm diameter pipe has a nozzle at
its end. If the velocity in the pipe is 2.5 m/s and
the pressure is 50 kpa, calculate the diameter
of jet , Consider Cv= 0.98
A
B
C
D
0.5 cm
2.5cm
4.9 cm
5.5 cm
Answer : C
Question:A 10 cm diameter pipe has a nozzle at its
end. If the velocity in the pipe is 2.5 m/s and
the pressure is 50 kpa, calculate the head loss
in the jet. Consider Cv= 0.98
A
B
C
D
0.215 m
1.215 m
0.555 m
1.555 m
Answer : A
Question
A
B
C
D
Venturimeter, orificemeter and nozzles
are used to measure the fluid discharge
from a pipeline. The average fluid
velocity in a pipeline can be measured
by a
Weir
Hot wire anemometer
Cup and vane anemometer
None of these
Answer : B
Question
A
B
C
D
If a pitot tube is placed with its nose
facing downstream, the liquid
Does not rise in the tube
Rises in the tube to a certain height
Falls in the tube to a depth
None of above
Answer : C
Question
A
B
C
D
The discharge through an internal
mouth piece is more if its length is
< diameter
<diameter
≥ diameter
none of these.
Answer : C
Question
A
B
C
D
The Euler’s equation of motion
is a statement of energy balance
is a preliminary step to derive the Bernoullis
equation
statement of conservation of momentum for a
real fluid
statement of conservation of momentum for
the flow of an inviscid fluid
Answer : D
Question
When no external energy is imposed ,
which of the following statements
would be true ?
1.Energy line always falls in the direction of flow
2.Hydraulic gradient line never rises in the direction of
flow
3.Specific energy may increase or decrease in the
direction of flow
4.Energy line and hydraulic gradient line can cross each
other
A
1 and 2
B
2 and 3
C
3 and 4
D
1 and 3
Answer : A
Question
Least possible value of correction factor
for
1 kinetic energy is zero
2. Kinetic energy is 1
3. momentum is zero
4. momentum is 1
The correct statements is
A
1 and 3
B
2 and 3
C
1 and 4
D
2 and 4
Answer : D
Question
The derivation of momentum equation
Fx= ρQ{(V2)x–(V1)x) is based on certain
assumptions
1. steady flow
2 .uniform flow
3 .velocity constant over the inlet and outlet cross
sections
4 .irrotational flow
A
1,2
B
1,4
C
1 ,3
D
4,5
Answer : C
Question
A
B
C
D
The change in moment of momentum
of fluid due to flow along a curved path
results in
a dynamic force which passes through the
centre of curvature
torque
a change in pressure
a change in kinetic energy of jet
Answer : B
Question
A
B
C
D
The integration of the Eulers equation
results in the Bernoulli’s equation. The
Bernoulli constants for points lying on
the same streamline and those which lie
on other streamlines will have the same
value if the flow is
incompressible
steady
irrotational
uniform
Answer : C
Question
A
The correct statement with respect to
flow through venturimeter
C
Fluid flows from convergent, throat,diverging
section
Fluid flows from diverging, throat, convergent
section
Fluid flows from Inlet, throat, diverging section
D
Fluid flows from inlet, diverging section, exit
B
Answer : A
Question
A
B
C
D
Linear momentum equation is the
mathematical form of
Conservation of mass
Conservation of momentum
Conservation of Energy
Newton law of motion
Answer : B
Question
A
B
C
D
Forces developed due to flow through
bend ,elbow in a pipe line can be
analyzed by
Newton law of motion
Bernoulli equation
Momentum equation
Continuity equation
Answer : C
Question
A
B
C
D
The shape of orifice is….
circular
rectangular
triangular
all of the above
Answer : D
Question
A
B
C
D
The size of orifice can be……
small
large
A or B
none of the above
Answer : C
Question
The nature of the edge of the orifice is
….
A
bell mouthed
B
sharp edged
C
Flat edge
D
All of above
Answer : C
Question
A
B
C
D
The condition of discharge of orifice is …
free orifice
fully submerged
partially submerged
all of the above
Answer : D
Question
A
B
C
D
The Toricelli’s expression is represented
as..
V2= Cc √ 2gxh)
V2= Cv √2 gxh)
V2= Cd √ 2gxh)
V2= √2gxh)
Answer : D
Question
A
B
C
D
If the whole of the outlet side of an
orifice is submerged under liquid so that
it discharges the jet of liquid into the
liquid of same type , it is known as …
small orifice
large orifice
drowned orifice
free orifice
Answer : C
Question
A
B
C
D
The bottom edge of the notch over
which the liquid flows through is called as,
nappe
crest
trough
none of the above
Answer : B
Question
A
B
C
D
The distance of crest from the bottom
of tank is known as…..
crest
crest height
notch
none of the above
Answer : B
Question
A
B
C
D
The sheet of liquid flowing over the
notch is called as
nappe
crest
crest height
all the above
Answer :A
Question
A
B
C
D
. ………. is an opening provided at the
side of the tank such that the liquid
surface in the tank is below the top
edge of the opening.
orifice
notch
weir
none of the above
Answer : B
Question
A
B
C
D
The shape of notch is
rectangular
triangular
circular
all the above
Answer : D
Question
A
B
C
D
The stream of liquid coming out of
orifice is called as …
venacontracta
head of water
jet
nappe
Answer : C
Question
A
B
C
D
……. is defined as a definite volume
fixed in space such that the flow takes
place into and out of this volume.
control surface
control volume
specific volume
none of the above
Answer : B
Question
A
B
C
D
Bernoulli's equation is applicable to
Steady flow
Unsteady flow
Both steady and unsteady flow
None of the above.
Answer : A
Question
Bernoulli's equation is applicable to
A
B
C
Compressible flow
In compressible flow
Both compressible and incompressible flow
D
None of the above.
Answer : B
Question
A
B
C
D
The kinetic energy correction factor
has units of velocity head
applies to the continuity equation
modifies the Bernoulli's constant in the energy
equation
accounts. for the non-uniform distribution of
velocity across the section
Answer : D
Question
A
B
C
D
The value of kinetic energy correction
factor for laminar flow through a
circular pipe is approximately equal to
1.0
1.5
2.0
2.25
Answer : C
Question
A
B
C
D
The momentum correction factor is
given by the relation:
(1/A ) ∫( v/V)dA
(1/A ) ∫( v/V) 2dA
(1/A ) ∫( v/V) 3dA
(1/A ) ∫( v/V) 4dA
Answer : B
Question
A
B
C
D
The value of momentum correction factor
for laminar flow through a circular pipe is
approximately equal to:
0.75
0.87
1.02
1.33
Answer : D
Question
A
B
C
D
Which of the following equations is
known as momentum principle:
F = d/dt(m 2v)
F = dv/dt
F = d/dt (mv)
F = d/dt2(mv)
Answer : C
Question
A
B
C
D
The Pizometric head is the summation
of
velocity head and pressure head
pressure head and elevation head
velocity head and elevation head
none of the above.
Answer : B
Question
A
B
C
D
The total energy-line is always higher
than the hydraulic gradient line, the
vertical distance between the two
representing:
the pressure head
the piezometric head
the velocity head
none of the above.
Answer : C
Question
A
B
C
D
The Bernoulli's equation written in the
form of p/w + V2/2g+z= constant represents
total energy per unit of certain quantity.
Identify this quantity from the choices given
below
energy per unit mass
energy per unit weight
energy per unit volume
energy per unit specific weight
Answer : B
Question
A
B
C
D
The differential manometer connected
to a Pitot static tube used for measuring
fluid velocity gives
Dynamic pressure.
total pressure
static pressure
Difference between total pressure and dynamic
pressure.
Answer : A
Question
A
B
C
D
The hydraulic gradient-line indicates
the direction of which of the following:
Velocity head in flow direction
Piezometric head in the direction of flow
Total energy of flow in the direction
None of the above.
Answer : B
Question
A
B
C
D
The momentum correction factor β is
used in account for:
change in direction of flow
change in total energy
non-uniform distribution of velocities at inlet
and outlet sections
change in mass rate of flow.
Answer : C
Question
A
B
C
D
For a perfect incompressible liquid,
flowing in a continuous stream, the
total energy of a particle remains the
same, while the particle moves from
one point to another This statement is
called
Pascal's law
Archimede's principle
Continuity equation
Bemoulli's Answer
equation : D
Question
A
B
C
D
When the venturimeter is inclined, then
for a given flow it will show ....reading.
maximum
more
less
same
Answer : D
Question
A
B
C
D
The pressure of the liquid flowing
through the divergent cone of
Venturimeter will ---- as compared to
its converging cone _
remains constant
increases
depends upon mass of liquid
Answer : B
decreases
Question
A
B
C
D
The terms p/ρg is known as _
pressure energy per unit weight
kinetic energy per unit weight
pressure energy
none of the above
Answer : A
Question
A
B
C
D
The term Z is known as
potential energy per unit weight
potential energy
pressure energy
none of the above
Answer : A
Question
A
B
C
D
All terms of energy in Bernoulli's
equation have dimension of
length
energy
work
mass
Answer : A
Question
A
B
C
D
The discharge through the Venturimeter
is given by
Cd√(a12-a22) √(2gh) /(a1a2)
Cd (a1a2)√(2gh) /(√(a12-a22))
Cd(a1-a2)√(2gh) / (a1+a2)
Cd√(a1a2) √(2gh) /(a1+a2)
Answer : B
Question
A
B
C
D
The difference of pressure head (h)
measured by a differential manometer
containing lighter liquid is-----where x =
difference of mercury level,Sm = specific
gravity of mercury and So = specific
gravity of oil
h=x(1-Sm/So)
h=x(Sm/So-1)
h=x(Sm-So))
None of the above
Answer : A
Question
A
B
C
D
The rate of flow through a Venturimeter
varies as
H(1/2)
H(3/2)
H(5/2)
H
Answer : A
Question
A
B
C
D
The units of discharge can be
cumec
TMC
Mm3
All of above
Answer : A
Question
A
B
C
D
The large angle of converging cone is
because of
accelerating the velocity of flow
decreasing the velocity of flow
maintain the flow
none of the above
Answer : A
Question
A
B
C
D
Divergent cone of venturimeter is used
to convert….
pressure energy into potential energy
pressure energy into kinetic energy
kinetic energy into pressure energy
none of the above
Answer : C
Question
A
B
C
D
In an inclined venturimeter if a
differential manometer is used to
measure the pressure head difference
between the inlet and the throat then
the reading on the manometer is
independent of
area of inlet and throat
specific weight of flowing fluid
angle of inclination
level of manometer
Answer : C
Question
A
B
C
D
The principle used in pitot-tube is …..
velocity of flow is reduced to zero and velocity
head is converted to pressure head.
velocity of flow is maximum and velocity head
is converted to pressure head.
velocity of flow is reduced to zero and pressure
head is converted to velocity head.
all of the above
Answer : A
Question
A
B
C
D
Pitot- tube is ……..
open at both ends
bent at right angles
for measurement of velocity of flow
all of the above
Answer : D
Question
A
B
C
D
In case of orifice meter the pressure
difference is measured between ….
inlet and throat
inlet and venacontracta
venacontracta and outlet
none of the above
Answer : B
Question
A
B
C
D
The section of flow which converges to
a minimum after it moves out of orifice
is known as
orifice
venture
venacontracta
notch
Answer : C
Question
A
B
C
D
The theoretical rate of flow is higher in
venturimeter
orifice meter
both of the above
none of the above
Answer : A
Question
A
B
C
D
Venturimeter is preferable for..
measurement of flow in large pipes
measurement of flow in smaller pipes
Measurement of velocity in large pipes
Measurement of Pressure in large pipes
Answer : A
Question
A
B
C
D
A rotameter works on the principle of
__________ pressure drop.
Constant
Variable
Both (a) &(b)
Neither (a) nor (b)
Answer : A
Question
A
B
C
D
An orifice is an opening in a vessel with
Closed perimeter of regular shape through
which water flows
The water level of the liquid on the upstream
side is below the top of the orifice
Partially full flow
Prolonged sides having length of 2 to 3
diameters of the opening in thick wall.
Answer : A
Question
A
B
C
D
Discharge through a totally submerged
orifice, is directly proportional to
Difference in elevation of water surfaces
Square root of the difference in elevation of
water surface
Square root of the opening
Reciprocal of the area of the opening
Answer : B
Question
A
B
C
D
Pick up the correct statement regarding
convergent divergent mouth piece from
the following :
It converges upto Venacontracta and then
diverges
In this mouth piece there is no loss of energy
due to sudden enlargement
The coefficient of discharge is unity
All the above.
Answer : D
Question
A
B
C
D
Select the wrong statement pertaining
to flow of an incompressible fluid
through a venturimeter.
For frictionless flow, the fluid pressure entering
the venturi meter will be exactly equal to that
leaving the venturimeter.
Discharge of fluid through a venturimeter
depends upon the gage difference irrespective
of the orientation of venturimeter.
Venturimeter occupies less space than an
orificemeter.
Venturimeter incurs less power loss compared
to an equivalent orificemeter
Answer : C
Question
A
B
C
D
In an inclined position, a Venturimeter
records
More reading
Less reading
Same reading
None of these.
Answer : C
Question
A
When a liquid is flowing through a pipe,
the velocity of the liquid is
C
Maximum at the centre and minimum near the
walls
Minimum at the centre and maximum near the
walls
Zero at the centre and maximum near the walls
D
Maximum at the centre and zero near the walls
B
Answer : A
Question
A
B
C
D
Which is not a variable head meter?
Venturimeter
Pitot tube
Rotameter
None of these
Answer : C
Question
A
B
C
D
The line joining the points to which the
liquid rises in vertical piezometer tubes
fitted at different cross-sections of a
conduit, is known as
Hydraulic gradient
Piezometric line
Hydraulic grade line
All the above.
Answer : D
Question
A
B
C
D
Vena-contracta pressure tapping is at a
distance __________ from the position
of an orificemeter fitted in a pipe of
internal diameter 'd'
d
0.5 d
2d
4d
Answer : B
Question
A
B
C
D
In case of a rotameter, the density of
the float material is __________ that of
the liquid it replaces.
More than
Less than
Equal to
Either (a) or (b)
Answer : A
Question
A
B
C
D
Which of the fluid forces are not
considered in the Reynold's equation of
flow ?
Viscous forces
Turbulent forces
Pressure forces
Compressibility forces
Answer : D
Question
A
B
C
D
Which of the following assumptions
enables the Euler's equation of motion
to be integrated?
The fluid is incompressible.
The fluid is non-viscous.
The flow is rotational and incompressible.
Both a &b
Answer : A
Question
A
B
C
D
Which is the most efficient and best for
measuring very small flow rate of gases ?
Venturimeter
Orifice meter
Rotameter
Flow nozzle
Answer : C
Question
A
B
C
D
Which of the following is used for very
accurate measurement of flow of gas at
low velocity ?
Pitot tube
Rotameter
Segmental orificemeter
Hot wire anemometer
Answer : D
Question
A
B
C
D
The discharge over a right angled notch
is (where H = Height of liquid above the
apex of notch)
8/15.Cd√2g x H5/2
8/15. Cd2√g x H3/2
Cd√2g x H2
Cd2g x H5/2
Answer : A
Question: The study of motion of fluid with forces
which causes the flow is known as
A
B
C
D
fluid kinematics
fluid dynamics
fluid statics
none of the above
Answer : B
Question: The study of motion of fluid with forces
which causes the flow is known as
A
fluid kinematics
B
fluid dynamics
C
fluid statics
D
none of the above
Answer : B
Question: The study of motion of fluid with forces
which causes the flow is known as
A
fluid kinematics
B
fluid dynamics
C
fluid statics
D
none of the above
Answer : B
Question: The study of motion of fluid with forces
which causes the flow is known as
A
fluid kinematics
B
fluid dynamics
C
fluid statics
D
none of the above
Answer : B
Question
A
B
C
D
A weir is said to be broad crested weir, if
the width of the crest of the weir is
__________ half the height of water
above the weir crest.
equal to.
less than
more than
None of above
Answer : C
Question
A
B
C
D
Q=
Q=
Q=
Q=
The discharge through a large
rectangular orifice is given by
(where H1 = Height of the liquid above
the top of the orifice,
H2 = Height of the liquid above the
bottom of the orifice,
b = Breadth of the orifice, and
Cd = Coefficient of discharge)
Cd x b2g(H2 - H1)
Cd x b2g(H21/2 - H11/2)
Cd x b2g(H23/2 - H13/2)
Cd x b2g(H22 - H12)
Answer : C
Question
A
B
C
D
The maximum discharge over a broad
crested weir is
0.384 Cd x L x H1/2
0.384 Cd x L x H3/2
1.71 Cd x L x H1/2
1.71 Cd x L x H3/2
Answer : D
Question
A
B
C
D
The coefficient of discharge for an
external mouthpiece is
0.375
0.5
0.707
0.855
Answer : D
Question
A
B
C
D
In …….. losses are more hence the value
of co-efficient of discharge is low.
pitot-tube
venturimeter
orifice meter
rotameter
Answer : C
Question
A
B
C
D
In order to calculate the velocity by
pitot tube for a flowing stream it is
dipped……
vertically
horizontally
inclined
all the above
Answer : A
Question
. …….. is an opening having a closed
perimeter in the walls or bottom of a tank.
A
throat
B
orifice
C
nozzle
D
mouthpiece
Answer : B
Question
A
B
C
D
The discharge through an external
mouthpiece is given by (where a =
Cross-sectional area of the mouthpiece,
and H = Height of liquid above the
mouthpiece)
0.82 a√2gH
1.855 a√H2g
1.585 a√2gH
5.85 a√H2g
Answer : A
Question
A
B
C
D
If a pitot tube is placed with its nose
upstream, downstream or sideways, the
reading will be the same in every case.
True
False
Depends on size of pitot tube
Depends on viscosity of fluid
Answer : B
Question
In area meter (e.g., rotameter), with
increase in the fluid flow rate, the
A
B
C
Pressure drop increases linearly.
Pressure drop is almost constant.
Area through which fluid flows does not vary.
D
None of these.
Answer : B
Question
A
B
C
D
Name the instrument which records the
static pressure and stagnation
pressure….
pitot- tube
prandtl pitot tube
pitot static tube
both b and c
Answer : D
Question
A
B
C
D
In a steady flow, the diameter is
doubled then the kinetic energy will
be….
halved
doubled
decreased four times
decreased 16 times
Answer : D
Question
A
B
C
D
In an incompressible and steady fluid
flow the diameter is doubled , then the
velocity of flow will be…
doubled
thrice
decreases twice
decreased four times
Answer : D
Question
A fluid jet is discharged through a 100
mm diameter nozzle and its diameter of
vena contracta is 90 mm. Find the co- efficient of
velocity if the value of Cd= 0.77
A
B
C
D
0.95
0.99
0.98
0.90
Answer : A
Question
A
B
C
D
If the velocity of flow is 4 m/s, then the
velocity head should be…..
0.46 m
1m
1.50 m
0.815 m
Answer : D
Question
A
B
C
D
A jet of water discharging from a 15 mm
diameter orifice has a Cc= 0.56,
determine the diameter of vena
contracta?
10 mm
15 mm
20 mm
25 mm
Answer : C
Question
Two small circular orifices of diameter
d1and d2respectively are placed on one side of
a tank at depths of 25 cm and 1 m below the
constant surface of water. If the discharges
through orifices are same, then the ratio of the
diameter will be….?
A
B
C
D
1: 2
√2: 2
√2: 1
1:1
Answer : C
Question
A
B
C
D
The forces on pipe bend can be
obtained by using
Momentum and continuity equations
Momentum and Energy equations
Energy and continuity equation
Momentum equation alone.
Answer : A
Question
A
B
C
D
If the velocity in a cross-section is nonuniform, the K.E. of fluid per Newton is
given by
V2/2g
αV2/2g
βV2/2g
p/ρg
Answer : B
Question
A
B
C
D
For the flow in a pipe correct state
regarding the kinetic energy correction
factor is
α laminar<αturbulent
α laminar= αturbulent
α laminar=1.33
αturbulent =2
Answer : D
Question
A
B
C
D
State which of the following statement
is False.
Flow work is the work associated with pushing
a fluid into or out of a control volume per unit
mass.
The sum of static and dynamic pressures is
called the total pressure.
The sum of all external forces acting on a
system equals the time rate of change of linear
momentum of the system.
The effect of non-uniform velocity distribution
of momentum flux is taken care of by using a
factor called momentum corrector factor.
Answer : B
Question
A
B
C
D
State which of the following statement
is not true
The effect of non-uniform velocity distribution
of momentum flux is taken care of by using a
factor called momentum corrector factor.
During free vortex motion, the rate of change
of angular momentum of the flow must remain
constant with finite magnitude ..
A propeller is a revolving mechanism which
uses the torque of a shaft to produce axial
thrust.
The torque acting on a rotating fluid is equal to
the rate of change of moment of momentum.
Answer : B
Question
A
B
C
D
The Euler's equation of motion can be
integrated only when
the fluid is compressible
the flow is steady and Irrotational
the flow is non-viscous
Both B&C
Answer : D
Question
A
B
C
D
An orifice is said to be large, if _
the available head of liquid is less than 5 times
the height of orifice
the size of orifice is large
the velocity of flow is large
the available head of liquid is more than 5
times the height of orifice
Answer : A
Question
A
B
C
D
The coefficient of velocity is less than 1
because
h, measured by pitot tube is theoretical
Opening at start of pitot tube is very small
Flow velocity is less
None of the above
Answer : A
Question:A person suffering from shortness of breath visits a
doctor, who discovers that blood flow in an artery
(shown here) is severely restricted, noting that the flow
at position 2 in the artery is three times faster than at
position 1. (For the purposes of this problem, assume
human blood is an ideal fluid.)
Based on the information given, the differences in the
blood pressure at position2 relative to position 1 can be
described as
A
B
C
D
the blood pressure must be lower at position 2 than at
position 1.
the blood pressure must be lower at position 1 than at
position 2.
the blood pressure must be equal at position 1 and 2.
None of the above
Answer : A
Question
A person suffering from shortness of
breath visits a doctor, who discovers that blood
flow in an artery (shown here) is severely
restricted, noting that the flow at position 2 in
the artery is three times faster than at position1
(For the purposes of this problem, assume human
blood is an ideal fluid.) the ratio of r1to r2
A
B
C
D
1.73
2.7
7.1
3.0
Answer : A
Question:A person suffering from shortness of
breath
visits a doctor, who discovers that blood
flow in an
artery (shown here) is severely
restricted,
noting that the flow at position 2 in the artery is three
times faster than at position 1. (For the purposes of
this problem, assume human blood is an ideal fluid.
If the average density of human blood is 1060
kg/m3and the blood's speed at position 1 is 0.1 m/s,
then the pressure gradient ΔP between positions 1
and 2 (assume the heights of 1and 2 are equal).
A
B
C
D
42 Pa.
72 Pa.
12 Pa.
32 Pa.
Answer : A
Question
A 4 cm diameter orifice in the vertical
side of the tank discharges water. The water surface in
the tank is at a constant level of 2.0 m above the
centre of orifice. If head loss in the orifice is 0.20 m
and the co-efficient of contraction is 0.63, determine
the value of coefficient of discharge.
A
0.98
B
0.65
C
0.59
D
0.75
Answer : C
Question
A
B
C
D
A 4 cm diameter orifice in the vertical
side of the tank discharges water. The
water surface in the tank is at a constant
level of 2.0 m above the centre of
orifice. If head loss in the orifice is 0.20
m and the co-efficient of contraction is
0.63, determine the discharge through
the orifice, if Cv= 0.95.
0.001 m3/s
0.0047 m3/s
2.5 m3/s
0.03 m3/s
Answer : B
Question
A
B
C
D
A 4 cm diameter orifice in the vertical
side of the tank discharges water. The
water surface in the tank is at a constant
level of 2.0 m above the centre of
orifice. If head loss in the orifice is 0.20
m and the co-efficient of contraction is
0.63, determine the value of coefficient
of discharge.
0.98
0.65
0.59
0.75
Answer : C
Question
A
B
C
D
At a section A in the horizontal pipe, the
diameter 6 cm, pressure 80 kN/m2and
velocity is 32 m/s. The total energy of A
is ……..
18.9 m
50.6 m
56.2 m
60.4 m
Answer : D
Question
A
B
C
D
If the velocity of flow is 4 m/s, then the
velocity head should be…..
0.46 m
1m
1.50 m
0.815 m
Answer : D
Question
A 10 cm diameter pipe has a nozzle at
its end. If the velocity in the pipe is 2.5 m/s and
the pressure is 50 kpa, determine the velocity
of jet. Consider Cv= 0.98
A
B
C
D
0.911 m/s
10.11 m/s
15.23 m/s
0.112 m/s
Answer : B
Question:A horizontal pipe of cross sectional area 5 cm2is
connected to a venturimeter of throat
area 3
cm2 as shown in figure. If the manometric reading
is 5 cm of water, the discharge in cm3/s is
A
B
C
D
0.45
5.50
2.10
3.70
Answer : D
Question:
Point A of head ‘HA’ is at a higher
elevation than point B of head ‘HB’.The head
loss between these points is HL.The flow will
take place
A
B
C
D
Always from A to B
From A to B if HA+HL= HB
From B to A if HA +HL= HB
From B to A if HB +HL= HA
Answer : C
Question
Water flows through a converging –
diverging pipe. total energy line (TEL) &Hydraulic
gradient line(HGL) drawn is
A
Correct
B
Incorrect
C
Insufficient data
D
None of the above
Answer : A
Question
Water flows through a tapering pipe from 1 to
2,The totalenergy line (TEL) &Hydraulic gradient
line(HGL) drawnis shown in fig.
With respect to total energy line (TEL) &Hydraulic
gradient line(HGL) drawn as shown in fig which of the
following statement is correct
A
Both total energy line (TEL) &Hydraulic gradient
line(HGL) drawn is correct
B
Only total energy line (TEL) is correct &Hydraulic
gradient line(HGL) is incorrect
C
Only Hydraulic gradient line(HGL) is correct &total
energy line (TEL) is incorrect
D
Both total energy line (TEL) &Hydraulic gradient
line(HGL) drawn is incorrect
Answer : C
Question
A long pipe as shown if fitted with
venturimeter 'V '&orifice-meter 'O'.If the rate
of discharge measured at A &B are Q A &QB,The
relation of Q A &QB, is
A
B
C
D
Q A =QB,
Q A >QB,
Q A <QB,
None of above
Answer : A
Question
A
B
C
D
A container is filled with 30 cups of
water to an height of ‘h’ .If it is allowed
to flow out into another container at a
rate of 1cup of water per minute, the
total water will be emptied in
30 minutes
More than 30 minutes
Less than 30 minutes
Can’t say
Answer : B
Question:
The total energy line (TEL) &Hydraulic
gradient line(HGL) drawn for the pipe is shown
in fig below
A
B
C
D
Both total energy line (TEL) &Hydraulic gradient
line(HGL) drawn is correct
Both total energy line (TEL) &Hydraulic gradient
line(HGL) drawn is incorrect
Only total energy line (TEL) is correct
Only Hydraulic gradient line(HGL) drawn is
correct
Answer : B
Question
When fluid flows through the variable
section pipe shown, the total energy line (TEL)
&Hydraulic gradient line(HGL) is
A
B
C
D
Both total energy line (TEL) &Hydraulic gradient
line(HGL) drawn is correct
Only total energy line (TEL) is correct
Only Hydraulic gradient line(HGL) is correct
Both total energy line (TEL) &Hydraulic gradient
line(HGL) drawn is incorrect
Answer : B
Question:
Water flows through a tapering pipe
having areas of 0.0707 m2 &0.01767m2 .The
elevation head is as shown in fig.When a
discharge of 40 lps flows through the pipe, the
pressure at 1 is 400 kN/m2,the pressure at
section 2 is,
A
B
C
D
450.85 kN/m2
436.8 kN/m2
322.8 kN/m2
155.6 kN/m2
Answer : B
Question:A uniform diameter pipe of 25 cm is placed inclined
as shown. During the flow of a fluid, the energy loss at
section 1-1 is 15.187m and that at 2-2 is 14.122m was
observed.
The fluid flow is from
A
B
C
D
1-1 to 2-2
2-2 to 1-1
Flow do not take place in inclined pipe as shown
None of the above
Answer : B
Question:A venturimeter of throat diameter 5 cm is
fitted into the 12.5 cm diameter water pipeline.
The co-efficient of discharge is 0.96. When the
U-tube manometer is connected between the
upstream and the throat sections the reading
on the mercury –water shows 20 cm. Calculate
the rate of flow.
A
B
C
D
13.4 lps
10.5 lps
1.5 lps
100 lps
Answer : A
Question:A vertical venturimeter 40 cm X 20 cm is
provided in a vertical pipe to measure the flow
of oli whose relative density is 0.80. The
difference in elevations of throat and entrance
section is 1 m. The direction of flow is vertically
upward. The oil mercury differential gauge s
hows deflection of mercury equal to 40 cm.
Determine the quantity of oil flowing in the
pipe. Neglect losses.
A
1.00 m3/s
B
0.36 m3/s
C
0.55 m3/s
D
1.55 m3/s
Answer : B
Question:A pipe carrying water has 30 cm x 15 cm
venturimeter which is positioned at 30oto the
horizontal. The flow is upwards. The converging
cone is 45 cm in length and the value of Cdis
0.98. A differential U- tube manometer with
mercury as indicating fluid is connected to the
inlet and throat shows a column height of 30
cm. Calculate the discharge in the pipe.
A
154 lps
B
160 lps
C
150 lps
D
100 lps
Answer : A
Question: The study of motion of fluid with forces
which causes the flow is known as
A
fluid kinematics
B
fluid dynamics
C
fluid statics
D
none of the above
Answer : B
Question:The throat diameter of a venturimeter is
6cm. It is used in 10cm diameter pipe carrying
water at pressure of 50 kN/m2 If pressure at
throat is 20 kN/m2, the differential pressure
head is
A
B
C
D
E
3.058 m of water
30 m of water
3 m of water
40 m of water
None of the above
Answer : A
Question:A pipe 15 cm in diameter carries oil (sp. gr. =
0.75) at a rate of 70 lps. At a section 0.12 m
above datum the pressure is equivalent to 2 cm
of mercury vacuum. If the kinetic energy
correction factor for that section is 1.1 the total
head at that section in meters of oil is
A
B
C
D
0.68
0.75
0.56
0.64.
Answer : D
Question:A venturimeter of throat diameter10 cm is
connected to a 20 cm diameter main carrying
water. The head loss between the inlet and the
throat is 0.1times the velocity head. The
differential head measurement is 30 cm. The
manometric fluid has a relative density of 0.75.
What is the co-efficient of the discharge of
venturimeter?
A
B
C
D
0.58
0.65
0.95
1.1
Answer : C
Question:A pipe carries a flow of an oil of R.D. = 0.85. A
pitot static tube is inserted into the pipeto
measure the velocity of flow at point M. If a
differential mercury oil gauge connected to
pitot static tube indicates a reading of 4 cm.
Calculate the velocity of flow at M. assume coefficient of pitot tube as 0.99.
A
B
C
D
3.4 m/s
1.5 m/s
2.5 m/s
3.0 m/s
Answer : A
Question:A jet of water discharging from a 20 mm
diameter orifice has a diameter of 25 mm at its
vena contracta. The coefficient of contraction is
-A
0.64
B
1.56
C
1.64
D
0.84
Answer : A
Question:A fluid jet is discharging from a 200 mm
nozzle and the vena contracta formed has a
diameter of 180 mm. If the coefficient of
velocity is 0.97, then the co-efficient of
discharge for a nozzle is
A
B
C
D
0.785
0.815
0.905
0.705
Answer : A
Question:Two small orifices A and B of diameters 1.5
cm and 2.8 cm, respectively, are on the sides of
a tank at depth of h1, and h2below the open
liquid surface. If the discharges through A and
B are equal then the ratio of h1and h2(i.e.h1/ h2)
assuming equal Cd values) will be,
A
B
C
D
12.4 : 1
18.4 : 1
11.44 : 1
16 : 1
Answer : A
Question
Consider the following assumptions
1. The fluid s compressible
2. The fluid is inviscid
3. The fluid is incompressible and homogeneous
4. The fluid is viscous
The Euler's equation of motion requires assumptions
indicated in
A
1 and 2
B
2 and 3
C
1 and 4
D
3 and 4
Answer : B
Question
Water flow steadily down a vertical pipe
of constant cross section. Neglecting
friction, according Bemoulli's equation,
_
A
B
Pizometric head decrease with height.
Pressure is constant along the length of pipe.
C
D
Velocity decreases with height.
Pressure increased with height.
Answer : A
Question
A
B
C
D
At a section A in a horizontal pipe, the
pressure is 50 kN/m2and velocity is 25
m/s. Assuming the datum Z=0 m The
total energy of A is
36.95m
30.95m
32.95m
None of the above
Answer : A
Question
A
B
C
D
A fluid is flowing through a horizontal
pipe with non-uniform cross section
which of the following quantities
remains unchanged with respect to
time?
potential energy per unit volume
kinetic energy per unit volume
pressure energy per unit volume
speed of flow
Answer : A
Question
A
B
C
D
In a steady flow along a stream line at a
location in the flow, the velocity head is
10m, the pressure head is 5 m, the
potential head is 1 m. the height of
Total Energy line at the location will be _
16m
4m
14m
32m
Answer : A
Question
A
B
C
D
E
If the water is flowing in a pipe with
speed 5 m/s then its kinetic energy per
unit weight is
0.46 m
2.00m
3.94m
1.27m
None of the above
Answer : D
Question
A
B
C
D
The divergent portion of a venturimeter
is made longer than convergent portion
in order to
avoid the tendency of breaking away the
stream of liquid
to minimize frictional losses
both (a) and (b)
none of the above
Answer : C
Question
A
B
C
D
Size of a venturimeter is specified by, _
pipe diameter
both pipe diameter as well as throat diamet
throat diameter
angle of diverging section
Answer : B
Question
A
B
C
D
A pitot tube was inserted in a pipe to
measure the velocity of water in it. If
the water rises the tube is 400mm. The
velocity of water will be
1.8 m/s
2.8 m/s
0.8 m/s
2.98 m/s
Answer : B
Question
A
B
C
D
A submarine is cruising at a depth 30 m
is ocean water. If the forward speed of
submarine is 20 m/s. The pressure head
at pitot tube is ------
20.38m
10.38m
15.38m
10.38m
Answer : A
Question
A
B
C
D
Select the incorrect statement.
Contraction is least at vena contracta
The pressure intensity at vena contracta is
atmospheric.
Steam lines are parallel throughout the jet at
vena contracta.
Coefficient of contraction is always less than
one
Answer : A
Question
A
B
C
D
In a laboratory, 15 litre of water was
collected per second through a small
orifice of 100mm diameter under a
constant head of 475 mm. The
coefficient of discharge for a orifice is _
0.4
0.6
0.8
0.9
Answer : B
Question
The Navier- Stokes equation is used for
……….
A
analysis of compressible fluids
B
analysis of elastic fluids
C
analysis of viscous fluids
D
analysis of unsteady flow
Answer : C
Question:The diagram, which depicts a horizontal piping
system, viewed from directly overhead, that delivers a
constant flow of water through pipes of varying relative
diameters labeled 1 through 5.
At which of the labeled points is the water in the pipe
under the lowest pressure?
A
B
C
D
1
2
3
4
Answer : B
Question:A fountain emitting a single stream of water (density
1000 kg/m3) at a playground is fed from a vertical pipe that
is below ground but whose opening is at ground level as
shown. At the ground-level opening, the pipe's diameter is
0.06 m and the water exits the pipewith a velocity of 9.0
m/s upward. The volume flow rate of the water as it exits
the pipe.
A
B
C
D
10-2m3/s
2.5 ×10-2m3/s
1.5×10-2m3/s
1.11 ×10-2m3/s
Answer : B
Question:
A fountain emitting a single stream of water (density
1000 kg/m3) at a playground is fed from a vertical pipe that is below
ground but whose opening is at ground level as shown. At the ground-level
opening, the pipe's diameter is 0.06 m and the water exits the pipewith a
velocity of 9.0 m/s upward
The fountain's lower end of the underground pipe has a diameter of 0.12
m and is 6.0 m below the ground. The absolute pressure in the
underground pipe at a depth of 6.0 m is
A
B
C
D
P1= 2.00 x 105Pa.
P1= 2.00 x 106Pa.
P1= 3.00 x 105Pa.
P1= 3.00 x 106Pa.
Answer : A
Question:A person suffering from shortness of breath visits a
doctor, who discovers that blood flow in an artery
(shown here) is severely restricted, noting that the flow
at position 2 in the artery is three times faster than at
position 1. (For the purposes of this problem, assume
human blood is an ideal fluid.)
Based on the information given, comment qualitatively
on the diameter of this artery at position 2 relative to
that at position 1.
A
B
C
D
The cross-sectional area (and therefore the diameter) at
position 2 must be much narrower than at position 1.
The cross-sectional area (and therefore the diameter) at
position 2 must not be narrower than at position 1.
The cross-sectional area (and therefore the diameter) at
position 2 must be equal to at position 1.
None of the above
Answer : A
Question
A
B
C
D
The rate of flow through a orifice meter
varies as
H(1/2)
H(3/2)
H(5/2)
H
Answer : A
Question
A
B
C
D
Cavitations is caused by
Low pressure
High velocity
Low barometric pressure
High pressure
Answer : A
Question
A
B
C
D
Separation of flow occurs due to
reduction of pressure gradient to
The extent such that vapour formation start
Zero
Negligibly low value
None of the above
Answer : C
Question
A
B
C
D
The speed of the fluid is maximum in
the Venturimeter at
convergent duct
divergent duct
throat
none of these
Answer : C
Question
A
B
C
D
Coefficient of resistance is defined as
the ratio of _
actual velocity of jet at vena contracta to the
theoretical velocity. area of jet at vena contracta to the area of
orifice
actual discharge through an orifice to the
theoretical discharge
none of the above
Answer : D
Question
A
B
C
D
The ratio of actual discharge of a jet of
water to its theoretical discharge is
known as _
co-efficient of viscosity
co-efficient of velocity
co-efficient of contraction
co-efficient of discharge
Answer : D
Question
A
B
C
D
The theoretical velocity of jet at
venacontracta is---
2g H
H√2g
√2gH
2g √H
Answer : C
Question
A
B
C
D
The coefficient of velocity for an orifice
is experimentally measured as by (using
usual notations),
x/(2 √YH)
2x/(√YH)
x/(√4YH)
√ x2/8YH)
Answer : A
Question: The discharge through a wholly
drowned orifice is given as ---(Where,H1= Height of water (on the
upstream side) above the top of the orifice
H2= Height of the water (on the
downstream side) above the bottom of the
orifice and
H = Difference between two water levels on
either side of the on either side of the
orifice )
A
B
C
D
Q = Cd. b H1 √2gH
Q = Cd. b (H2-H1)√2g H
Q = Cd. b H2 √2gH
Q = Cd. b H√2gH
Answer : B
Question:A circular orifice of 50 mm in diameter
discharges water under an effective head of 4
m. If discharge through orifice is 10.65 litre/s,
the coefficient of discharge will be ,
A
B
C
D
0.612
0.512
0.592
0.662
Answer : A
Question:Two small circular orifices of diameters d1and
d2respectively are placed on one side of a tank
at depths of 50 cm and 1m below a constant
surface of water. If the discharges through the
orifices are the same, then the ratio of the
diameter d1&d2will be,
A
B
C
D
1.189 : 1
1.891 : 1
4.22:1
1: √2
Answer : A
Question:A centre of an orifice is situated 15 cm above
the datum of vessel containing water depth 75
cm. If the coefficient of velocity is 0.975 and
horizontal co-ordinate measured from vena
contracta is 60 cm, the vertical co- ordinate will
be
A
B
C
D
25cm
5 cm
15 cm
29.56 Cm
Answer : C
Question:A horizontal venturimeter 30 cm x 20 cm is
used to measure the flow of an oil of Relative
density 0.9. If the difference in pressure head
between inlet and outlet is 4 m. and
manometric liquid is mercury, the manometer
reading will be
A
B
C
D
E
1.283 m
0.280 m
2.283 m
0.283 m
None of the above
Answer : D
Question:A pipe carrying water has 30 cm x 15 cm
venturimeter which is positioned at 30oto the
horizontal. The flow is upwards. The converging
cone is 45 cm in length and the value of Cdis
0.98. A differential U- tube manometer with
mercury as indicating fluid is connected to the
inlet and throat shows a column height of 30
cm. Find the head loss in the converging cone
of the venturimeter.
A
B
C
D
15 cm
100 cm
20 cm
10 cm
Answer : A
Question:If the velocity of flow is 4 m/s, then the
velocity head should be…..
A
B
C
D
0.46 m
1m
1.50 m
0.815 m
Answer : D
Question:A rectangular orifice 300mm deep and 600
mm wide is discharging water at a constant
head of 500 mm. if Cd for orifice is 0.62, the
discharge through the orifice is –
A
B
C
D
0.1 m3/s
0.4 m3/s
0.349 m3/s
0.324 m3/s
Answer : C
Question:A centre of an orifice is situated 15 cm above
the datum of vessel containing water depth 75
cm. If the coefficient of velocity is 0.975 and
horizontal co-ordinate measured from vena
contracta is 60 cm,the verytical co- ordinate will
be
A
B
C
D
25cm
5 cm
15 cm
29.56 Cm
Answer : C
Question:A sharp edge orifice of diameter 5 cm
discharge water under a constant head of 5 m.
If the coefficient of discharge is 0.62, the actual
discharge through orifice in liter/see is _
A
B
C
D
12.05
6.05
17.20
11.99
Answer : A
Question: The study of motion of fluid with forces
which causes the flow is known as
A
fluid kinematics
B
fluid dynamics
C
fluid statics
D
none of the above
Answer : B
Question: The study of motion of fluid with forces
which causes the flow is known as
A
fluid kinematics
B
fluid dynamics
C
fluid statics
D
none of the above
Answer : B
Question
A
B
C
D
For venturimeter the angle of diverging
cone is
60
200
100
none of the above
Answer : A
Question
A
B
C
D
For venturimeter the length of the
throat is ………. it’s diameter.
half
equal
twice
one-third
Answer : B
Question
A
B
C
D
For horizontal venturimeter the term
((P1 – P2)/ γ ) is called as
venturi head
pressure head
velocity head
piezometric head
Answer : A
Question
A
B
C
D
The flow in a venturimeter takes place
from
throat to divergent cone
convergent cone to divergent cone
divergent cone to convergent cone
none of the above
Answer : B
Question
A
B
C
D
A flat circular plate with circular hole is
known as ………….
nozzle
throat
venacontracta
orifice
Answer : D
Question
A
B
C
D
The centre hole of orifice plate is
bevelled with the angle of ……
400to 500
300to 500
300to 450
400to 600
Answer : C
Question
A
B
C
D
The diameter of orifice is ……. the
diameter of pipe.
twice
same
half
none of the above
Answer : C