Year : SYME 2013-14
Sub: Hydraulics (17421)
Assignment No 1 (Properties of Fluid)
Q.1) Nov 2010)Distinguish between real fluid and Ideal fluid.
Q.2) Define viscosity and gives its unit.
Q.3) Define Hydrostatics and Hydrodynamics.
Q.4) State the pascal law.
Q.5) Define the total pressure and Center of Pressure.
Q.6) What do you mean by gauge pressure.
Q.7) What is piezometer and what is its use.
Q.8) Define Dynamic viscosity and Kinematic viscosity along their units.
Q.9) The mass density of a lubricating oil is 890 kg/m3. What is a)Relative
Density b) Specific volume c) Unit weight.
Q.10)Define & give its unit a)Mass density b)Weight Density c)Surface Tension
d) Dynamic Viscosity
Q.11)Differentiate between specific weight and specific gravity of oil.
Q.12) Define the term fluid. State the types of fluid.
Q.13) Write mathematical expression of Newton’s low of viscosity and derive
unit of viscosity.
Q.14) The volume of liquid is 27 m3. It is reduced by 0.027 m3 by increasing
the pressure from 12 Atmospheric to 220 Atmospheric. Estimate the Bulk
modulus of liquid.
Q.15) A 900 ml of certain liquid weight 10N. Calculate the weight density and
relative density of the liquid.
Q.16) Define the ‘ Ideal liquid’ & ‘real fluid’.
Q.17)What is meant by Newtonian fluids and Non Newtonian fluids? Give
examples of each.
Q.18)How liquid behave differently from solid? Explain.
Q.19) Differentiate between the ‘Hydrostatics’ and ‘ Hydrodynamics’.
Q.20) State any four applications of Hydraulics in Environmental Engineering.
Q.21)A liquid has dynamic viscosity of 4.9 x 10-3 PaS and kinematic viscosity of
3.5 x 10 6 m2/S. Determine the specific gravity of the liquid.
Q.22)Dec11) A liquid weighs 15 kN and occupies 3.75 cum. Find its specific
weight, mass density.
Q.23) State four uses of hydraulics in Irrigation.
Q.24) If the specific gravity of oil is 0.80, what is its specific weight in N/m³?
Q.25) Differentiate between Ideal fluid and Real fluid on any four points.
Q.26) The mass density of lubricating oil is 900kg/m³. Calculate specific weight
and specific gravity
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Year : SYME 2013-14
Sub: Hydraulics (17421)
Assignment No 2
(Measurement of total Pressure & Center of Pressure)
Q.1) Nov 2010) The upstream face of dam is inclined at 600 to the horizontal. A
square opening on the inclined face of the dam is closed by a gate 1.6m wide.
The top of the gate is hinged at 1.8m vertically below the water surface. What
force normal to the gate at its lower edge should be applied to open it?
Q.2) A circular plate of diameter 4m having a circular hole of 1m diameter at
the centre of the plate is immersed in water at an angle of 300 to the horizontal
and with top edge 2m below the free surface of water. Calculate the total
pressure and centre of pressure.
Q.4) Find the total pressure on a gate constructed across a channel 5.0m wide
at top and 2.0m at bottom, 3.0m deep, when the channel is full of water.
Q.5) A concrete dam 12m high and 3.5m wide contain 9m deep water.
Calculate the water pressure per meter length of dam and point where the
resultant cuts the base. Assume weight of concrete as 24 kN/m3.
Q.6) A cubical tank has side width 3m. It contains oil of sp. Gravity 0.8 up to a
depth of 2m. Find the total pressure and position of center of pressure on one
side of tank.
Q.7) Explain why center of pressure lies below the center of gravity.
Q.8)Draw a neat sketch of simple U tube manometer for measuring the
negative pressure stating the equation for the same.
Q.9) An isosceles triangle plate of base 4m and altitude 4m is immersed
vertically in an oil of sp. Gravity 0.8 such that base coincide the free surface of
oil. Find the total pressure and center of pressure.
Q.10) A gate 4m wide and 2m high lies in a vertical plane and is hinged at the
bottom. A liquid of sp gravity 1.53 stands above the upper edge of the gate up
to 1.5m height on the upstream side of the gate and there is water on the other
side only up to upper edge of the gate. Find the resultant force acting on the
gate and the position of the center of pressure.
Q.11) State and explain any two limitation of piezometer.
Q.12) A bulkhead 3m long divides a storage tank. On one side there is petrol of
sp.gr. 0.8 stored to a depth of 2m while on the other side there is oil of sp.gr.
0.75 stored to a depth of 1m. Determine resultant pressure and position of it.
Q.13) A rectangular plane 4m deep and 3m wide immersed vertically in water
such that side is parallel to water surface and 3m below it. Find the total
pressure and center of pressure.
Q.14) A square tank of side 3m contains oil layer of thickness 0.45m flowing
over water having depth of 1.15m. Determine the total pressure on one side of
the tank and location of its line of action, using the concept of pressure
diagram. S.G. of oil is 0.84
Q15)Dec 11) Given data : a) Barometer reading =740mm mercury b)Specific
gravity of mercury 13.6 c) Intensity of Pressure 40 kPa. Express the intensity
of pressure in SI unit both gauge and absolute pressure.
Q.16) Differentiate between simple U-tube manometer and differential U-tube
manometer on any three
points.
Q.17) Calculate the height of mercury column equivalent to gauge pressure of
30 N/cm² and for
0.3 N/mm².
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Year : SYME 2013-14
Sub: Hydraulics (17421)
3
Year : SYME 2013-14
Sub: Hydraulics (17421)
Assignment No 3
(Measurement of Intensities of Pressure)
Q.1) Nov 2010) As shown in the given below arrangement Fig. No. 1 pipe ‘M’
contains toluene of specific gravity 0.875 under a pressure of 10 N/cm2 and
pipe ‘N’ contains water under a pressure of 15 N/cm2 and the manometric
liquid is mercury. Find the difference between the levels.
Q.2) What is piezometer? Where it is used?
Q.3) What do you mean by gauge pressure.
Q.4) A tube containing mercury has its right limb open to atmosphere. The left
limb is connected to a pipe containing water under pressure. If mercury level in
the right side is higher by 50mm. Find the pressure in pipe. The center of pipe
is 30mm above the right limb mercury level.
Q.5) A inverted differential manometer, when connected to two pipes A and B
gives reading as shown in figure. Determine the pressure in pipe B, if the
pressure in pipe A is 50 kPa.
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Year : SYME 2013-14
Sub: Hydraulics (17421)
Q.6)A U tube mercury differential manometer is connected between two points
60cm apart on a vertical pipe line conveying oil of sp gr. 0.85 in upward
direction. Determine the difference of pressure in N/mm2 between two points if
gauge deflection of manometer is observed to be 13cm.
Q.7) Explain with the neat sketch Bourdon pressure gauge. State four
advantages of it.
Q.8) Express pressure in N/mm2 a) 1.5m of mercury b) 8.5m of water.
Q.9) A U-tube mercury manometer when connected to a point on a pipeline
carrying oil of S.G. 0.8, shows gauge deflection of 84mm. The RL of center line
of pipe is 55.6m and that of mercury level in the connected limb is 54.8m.
Determine the pressure of the center of the pipe in kPa. If Bourdan pressure
gauge calibrated in N/cm2 is connected at the same point, what will be its
reading.
Q.10) A simple U tube manometer is used to measure water pressure in a
pipeline. The left limb of manometer is connected to the pipe and the right limb
is open to atmosphere. The mercury level in the left limb is 80mm below the
center of pipe and the level of mercury in the right limb is 220mm above the
center of the pipe. Calculate the pressure of water in meet of water head in the
pipe.
Q.10)Atmospheric pressure is 720mm of mercury. Gauge pressure measured is
22.5 N/cm2. What is the absolute pressure in terms of a) Meter of water B) in
kN/m2.
Q.11) Define absolute pressure, Gauge pressure and vacuum pressure and
show the relationship.
Q.12) A U-tube mercury manometer when connected to a point on a pipe line
carrying oil of S.G. 0.8 shows gauge deflection of 84mm. The RL of center line
of pipe is 55.6m and that of mercury level in the connected limb is 54.8m.
Determine the pressure of the center of pipe in kPa. If Bourdon’s pressure
gauge calibrated in N/cm2 is connected at the same point, what will be its
reading.
Q.13)Dec 11)A differential manometer is connected at two points M & N in a
pipe containing toluene of sp.Gr. 0.875, shows a difference in mercury level as
150mm. Find the difference in pressure between two points.
Q.14) A circular plate of diameter 4m in immersed in water in such a way that
its greatest and least depth below the dree surface of water are 5m & 3m resp.
Find the total pressure and center of pressure.
Q.15) A masonry dam 7m high & 3m wide has water level 2m below its top.
Find a) Total pressure on one meter length b) Depth of center of pressure. C)
The point at which the resultant cut the base. Assume density of masonry 20
kN/m3.
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Year : SYME 2013-14
Sub: Hydraulics (17421)
Assignment No 4
(Bernoulli’s Theorem & Continuity Equation)
Q.1)Nov 2010)A pipe of 10cm diameter branches into two pipes of 5cm
diameter and 2cm diameter. The flow is 5cm diameter branch is 2/3 of the flow
in main pipe of 10cm diameter. The remaining flow passes through 2cm pipe.
If the average velocity of flow in any of the pipes does not exceed 2m/s, find the
rate of flow in the main pipe.
Q.2) State the Bernopulis Equation. List the limitation of Bernouli’s Equation.
Q.3) State Impulse-Momentum Theorem.
Q.4)A pipeline 300m long has slope 1V:100H and having 1.2m diameter at
higher end to 0.6m diameter at lower end. The discharge of water flowing
through pipe is 0.9 m3/s. The pressure gauge fitted at higher end and lower
end of pipe indicate pressure 7m of water and 98.10kN/m2 respectively.
Determine loss of head and direction of flow.
Q.5) A pipe line carrying oil of sp. Gr. 0.9 has a diameter of 250mm at ‘A’ which
gradually increased to a diameter 500mm at ‘B’ which is 5m above A. If the
pressure at A and B are 125 kPa and 75 kPa resp. and discharge is 225 lit/sec.
Find the loss of head and direction of flow.
Q.6) A horizontal pipe conveying water tapers from 20cm diameter at A to 10cm
diameter at B in a length of 2m. The pressure at A is 100 N/cm2. If the
discharge is 600 lit/min. calculate the pressure at B in N/cm2, if the losses of
head from A to B is 10cm.
Q.7) Differentiate between steady and unsteady flow & give practical example.
Q.8) Differentiate between Uniform and Non uniform flow & give practical
example.
Q.9) Write the continuity equation and explain it.
Q.10) Write the assumption made in the Continuity equation.
Q.11) State the Bernoulli’s theorem and give its limitation.
Q.12) What is the modified Bernoulli’s theorem.
Q.13) Define terms Datum Head, Velocity Head and Pressure Head, Total Head.
Q.14) A uniform tapering vertical pipe of length 2m has 1m diameter at bottom
and 50cm at top. Water is flowing vertically upward. If the discharge is 100
lit/sec and pressure at the bottom is 10 N/cm2 calculate pressure at the top.
Assume head lost due to flow from bottom to top equal to 20cm.
Q.15) A pipe carries water at rate of 20 lps from point A to point B for a given
Data . Za= 0 Zb= 1m, Pa=1.2Mpa, Dia. at A = 5cm, Dia. at B = 2cm. Find the
pressure at B.
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Year : SYME 2013-14
Sub: Hydraulics (17421)
Assignment No 5
(Flow through Pipes)
Q.1) Nov 2010) A horizontal pipe line, 40m long is connected to a water tank at one
end and discharges freely into the atmosphere at the other end. For the first 25m of its
length from the tank, the pipe is 150mm diameter and its diameter is suddenly
enlarged to 300mm. The height of water level in the tank is 8m above the center of
pipe. Considering all losses of head which occurs, determine the rate of flow. Take
f=0.01 for both pipes.
Q.2) Two reservoirs which are connected by three pipes of diameter 10cm, 20cm, and
30cm respectively having same length and same friction factor. The total discharge
passing through three pipes is 1000lit/sec. Calculate the discharge through each pipe.
Neglect minor losses.
Q.3) State the uses of Moody’s diagram.
Q.4) Write effects of water hammer and remedial measures to avoid it.
Q.5) Define stream lines and equipotential lines & Reynold’s Number
Q.6) List the uses of Flownet.
Q.7) What is the Equivalent Pipe? Define H.G.L.
Q.8) Two pipes of 40cm and 20cm are each 300m long. When the pipes are connected
in series the discharge 0.10 m3/s. Find the loss of head incurred. What would be the
loss of head in the system if the same discharge is to be passed when pipes are
connected in parallel? f=0.04.
Q.9)Water supply to a town is made be a compound pipe consisting of 1.2km long pipe
of 45cm diameter, 1.6km long pipe of 30cm diameter and 750m long pipe of 60cm
diameter. The pipe line being old is to be replaced be a new pipeline of uniform
diameter. Find the diameter of such pipeline keeping the total length same ads that of
earlier pipeline. Take f=0.04 for old pipe and f=0.03 for new pipe.
Q.10) A horizontal pipeline, 40m long is connected to a water tank at one end and
discharge freely into the atmosphere at the other end. For the first 25m of its length
from the tank, the pipe is 150mm diameter and its diameter is suddenly enlarged to
300mm. The height of water level in the tank is 8m above the center of the pipe.
Considering all losses of head, which occur, determine the rate of flow. Take f = 0.001
for both section of the pipes.
Q.11) At a sudden enlargement of water line of 250mm diameter to 500mm-diameter
pipe, the hydraulic gradient rises by 12mm. Calculate the discharge through pipe.
Q.12)A pipe 20cm diameter is 20m long and velocity of flow in the pipe is 8 m/s. What
loss of head would be saved if the last 5m length of pipe is replaced by 30 cm
diameter, the change in section being sudden? Assume f = 0.04 for both pips.
Q.13)A 30 cm pipe, 600m long connects two reservoirs whose surface levels differ by
8.0m. At a distance of 200m from the upper reservoir, the pipeline has to cross a
ridge. Find maximum height above the upper reservoir level at which the pipe can be
laid and discharge in the pipeline. A local barometer reads 10m of water,
the vapour pressure at the maximum local temperature is 2m of water and a positive
pressure of 1m is desirable above this vapour pressure. F= 0.003.
Q.14) A compound pipe consists of pipe of dia. 0.5m and length 1100m ; followed by
pipe of dia 0.25m and length 650m. It connects two reservoirs A and B. The RLS of
free surfaces in the reservoirs are 1250m and 1210m resp. Determine the discharge
through the pipe taking into account minor losses. Take f = 0.04.
Q.15)Write equations for determine any four minor losses in pipe line with the
sketches.
7
Year : SYME 2013-14
Sub: Hydraulics (17421)
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Year : SYME 2013-14
Sub: Hydraulics (17421)
Assignment No 6
(Flow Measuring Devices)
Q.1)Nov 2010)An inclined venturimeter with 10cm inlet diameter carries 11.18 lit/sec
of liquid having relative density 1.2. The differential mercury manometer reads the
difference 15cm of mercury. If the coefficient of venturimeter is 0.98, calculate the
diameter of throat.
Q.2)State the advantages of triangular notch over rectangular notch. Which of these
two notches would you p[refer for gauging discharge of a bore well.
Q.3)A triangular notch of angle 120 degree is used to measure the discharge of a
pump. Determine the head over the notch, if discharge of 1300 lit/min. Assume
Cd=0.60
Q.4) A discharge of 2 x 106 m3/day reaches the storage reservoirs from the catchment
area. This water passes over the rectangular weir. What should be the length of this
weir, if the water is not to rise more than 1.2m above the crest? Assume Cd=0.6
Q.5)A 30 x 15cm venturimeter is provided a vertical pipe line carrying oil of spo.gr.
0.9. The flow being upwards. The differential manometer shows a gauge deflection of
25cm of mercury. Calculate the discharge if Cd=0.98. and sp. Gravity of mercury is
13.6
Q.6) Explain the term ‘End contraction’ and ‘ Velocity of approach’ in case of flow
through notch.
Q.7) List various velocity measuring devices for open channel flow and explain any
one.
Q.8) Explain with sketch the principal of ‘Venturimeter’
Q.9) A water flows over a rectangular notch of 1m length with a head of 15cm. The
same discharge of water passes over a right angled triangular notch. Find the head of
water over this notch. Take Cd for rectangular and triangular notch as 0.65 & o.6
respectively.
Q.10)A circular orifice 50mm diameter discharges water under an effective head of 4m.
Calculate the discharge through orifice if Cd=0.62
Q.11)Draw a neat sketch of Venturi flume and comment on velocity of flow at throat
section.
Q.12)A venturiflume of throat width 2.0m provided in a rectangular canal of 4.0m
width. The gauges fitted indicate readings of depth of flow in canal and throat as 1.m
and 0.8m resp. determine the discharge through canal. Cd =0.9
Q.13)Explain in brief with the help of a neat sketch principal & working of a pitot tube
to measure discharge passing through an open channel.
Q.14)Derive the expression for discharge passing over triangular notch with of a neat
labeled sketch.
Q.15)A sharp edged orifice of diameter 5.0 cm discharges water under a constant head
of 4.5cm. The co-ordinates of a point on the jet of the orifice are x = 165cm, y = 12cm
from vena contracta. Determine the discharge through the orifice if Cc = 0.6.
Q.16)Define hydraulics coefficients of the orifice and derive the relation between it.
Q.17) Explain the brief procedure for determine the coefficient of velocity of a Orifice
in the laboratory.
Q.18)What are the advantages of a Triangular Notch over a Rectangular notch.
Q.19)Determine the discharge through a 60 0 triangular notch in lit/sec when the
head is 0.16m. Take Cd = 0.6.
Q.20)Explain with sketch a) Vena Contracta b) End contraction c) Velocity of
approach d) Submerged weir.
Q.21) Explain the working of the current meter with neat sketch.
9
Year : SYME 2013-14
Sub: Hydraulics (17421)
Assignment No 7
(Open Channel Flow)
Q.1)Nov 2010)An irrigation channel of trapezoidal section has side slope of 1.5
horizontal to 1 vertical and bed slope of 1:4000.The channel has to pass
discharge 15 m3/s. The channel is to be lined for which the value of ‘N’ in
Manning’s constant is 0.012. Find the dimension of most economical section of
channel.
Q.2)Define specific energy,. Draw the specific energy diagram and explain.
Q.3) Define a)Wetted perimeter b)Hydraulic radius c)Prismatic channel Q.4)A
trapezoidal channel has side slope 1V:3H. It is discharges water at the rate of
20 cumeces with bed slope 1:2000. Design the channel for its best form. Use
Manning Formula N=0.01.
Q.5) A rectangular channel is 1.5m deep and 6 m wide has a longitudinal slope
1 in 1000. Determine the discharge through channel, if Chezy’s constant is 55.
Q.6)Define the Froud number and state its significance.
Q.6) Explain the term Hydraulic Jump? State any two location were Hydraulic
jump forms.
Q.7)Determine the bottom width and depth of flow for most economical section
of trapezoidal channel to carry a discharge of 1.5m3/s. The channel has a bed
slope 1 in 500 and its side slope are 45 degree. Take Chezy’s constant C=60.
Q.8) Explain the term Most Economical Section. Give the condition for
rectangular & Trapezoidal section to be most economical.
Assignment No 8
(Pumps)
Q.1)Nov 2010)List the main components & Parts of a centrifugal pump.
Q.2) A centrifugal pump is installed at GL and lifts water from well to water
tank. Water level in the well is 3.2m below GL and that to tank is 11.9m above
GL;. Determine the power of the pump required to discharge at the rate of 225
lit/s. If over all minor losses and friction loss are 3m of water and efficiency of
pump is 85%.
Q.3) Explain with sketch the working of double acting reciprocating pump.
Q.4) What is meant by cavitations in pump.
Calculate the power required to lift water under the following condition a)
Discharge =50 lit/s b) Losses in pipes & fixtures = 6m
c)Suction lift = 4m
d) Delivery head =20m e) Efficiency 75%
Q.5)What information will you collect for selecting the most suitable type of
pump from manufacturers nomogram.
Q.6) Differentiate between Centrifugal pump & reciprocating pump.
Q.7) Dec 11)A centrifugal pump is required to lift water through a total head of
30m at rate of 60 lit/sec. Calculate power for the pump in kW, if overall
efficiency of pump is 80%
Q.8) what is cavitation of pump? Sate its effect and remedial measurement.
10
Year : SYME 2013-14
Sub: Hydraulics (17421)
Sample Question Paper:
Exam Seat No.
Subject
Code
17421
Maharashtra State Board of Technical Education
Course Name:
Civil Engineering Group
Course Code:
CE/CS/CR/CV
Semester:
Fourth
Title of the Subject: Hydraulics
Marks:
100
Subject Code: 17421
Time: 3 Hrs
Instructions:
1. All questions are compulsory
2. Illustrate your answers with neat sketches wherever necessary
3. Figures to the right indicate full marks
4. Assume suitable data if necessary
5. Preferably, write the answers in sequential order
---------------------------------------------------------------------------------------------------------------Q.1.A) Solve any SIX of the following:
(6x2)
a) State four uses of hydraulics in Irrigation.
b) If the specific gravity of oil is 0.80, what is its specific weight in N/m³?
c) State in two steps, the conversion of pressure head of one liquid into another.
d) A liquid in piezometer stands 3m above the centre of pipe containing in liquid.
Calculate the Pressure at centre of pipe if liquid is (i) water (ii) mercury.
e) List four types of minor losses in pipeline.
f) State two causes and two effects of Water hammer.
g) Draw a neat sketch of Venturimeter. Label any four component parts.
h) State the significance of Cd and Cv in flow through orifice.
Q.1.B) Solve any TWO of the following:
(2x4)
a) Differentiate the behavior of liquid and solid (three points) with example.
b) Calculate the Kinematic Viscosity of oil whose specific gravity is 0.9 and viscosity is
0.1 N-S/m².
c) Define Total hydrostatic pressure & centre of pressure and state the unit of its
measurement.
Q.2. Solve any FOUR of the following:
(4x4)
a) Define pressure diagram with the help of neat sketch and mentions two applications
of it.
b) A circular plate 3m diameter is immerged in oil of specific gravity 0.8. Such that it’s
greatest and least depth below the free surface of oil is 4.5m and 1.5m respectively.
Calculate-i) The total pressure on one face of the plate.
ii) The location of centre of pressure.
c) A masonry dam 7m high and 3m wide has water level 1m below its top.Calculate
i) Total pressure on one meter length of the dam.
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Year : SYME 2013-14
Sub: Hydraulics (17421)
ii) Depth of centre of pressure.
d) A simple manometer containing mercury was used to determine the pressure in pipe
containing a liquid of specific gravity 0.8 as shown in figure. Calculate the pressure in
mm of oil and in N/cm² at ‘X’.
e) State four different types of flow of liquid with one practical example of each.
f) Draw neat sketch of flow net showing streamline and equiputential line & state its use.
Q.3. Solve any FOUR of the following:
(4x4)
a) The diameter of pipe changes from 240 mm at a section 5m above datum and 80 mm at
section 2m above datum. The pressure of water at first section is 40N/cm². If the
velocity of flow at the first section is 2m/s, calculate the intensity of pressure in N/cm² at
the second section. Velocity of flow of water in pipe line of 300 mm diameter is 2m/s
from which 40 mm diameter pipe branches out. Velocity measured in the branch pipe is 3
m/s. What is the velocity of water in the main pipe beyond the branch line?
c) Write the procedure of determination of coefficient of friction of a given pipe in
laboratory.
d) Three pipes having the same length and same friction factor having different diameters
as 270 mm, 120 mm and 50 mm respectively. When three pipes are connected in parallel,
gives a total discharge of 0.55m³/s. Find out the discharge in each pipe.
e) Explain the hydraulic gradient and total energy line with the help of neat sketch.
f) Define the following:
i) Wetted area
ii) Wetted perimeter
iii) Hydraulic mean depth
iv) Artificial channel
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Year : SYME 2013-14
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Q.4. Solve any FOUR of the following:
(4x4)
a) Compare between uniform flow and non-uniform flow on any four points with one
example.
b) Derive the conditions of most economical rectangular section.
c) Define Hydraulic jump and state its two applications.
d) Explain the differentiation of critical, sub-critical and super critical flow with reference
to Froud’s number.
e) Derive the relation between Cd, Cv and Cc and mention approximate values of the
above for sharp edged circular orifice.
f) A 100 mm diameter orifice discharges 42 liters per second liquid under a constant head
of 3m. The diameter of the jet at Vena Contracta is found by gauge to 88.1mm. Calculate
Cc, Cv and Cd.
Q.5. Solve any FOUR of the following:
(4x4)
a) Explain the method of determination of velocity of a stream with the help of current
meter.
b) Determine the discharge through 60° triangular notch in lps under the head of 0.16 m.
Take Cd=0.6.
c) Water is flowing over a cippoletti weir 4m long under a head of 1.0 m. Calculate the
discharge over the weir if Cd=0.6.
d) List four components of centrifugal pump. Write one function each.
e) Compare Centrifugal pump and Reciprocating pump on any four points.
f) A centrifugal pump is required to pump 10 litre per second against a head of 40 m.
Find the power required by the pump taking overall efficiency as 70%.
Q.6. Solve any TWO of the following:
(2x8)
a) Explain the construction and working of Bourdon’s pressure gauge with the help of
neat sketch and write two advantages of it.
b) The reservoir whose water level difference is 10 m are constructed by pipe line in
series of the pipe of dia. 50 mm & 100 mm dia. and lengths 10m & 50m respectively.
Take f1 = f = 0.024. Calculate the discharge from upper to lower reservoir.
c) A trapezoidal most economical channel section has side slopes 1.5(H) : 1(V). It is
required to discharges 16 m³/s with a bed slope of 0.5 m in 3.2 km. Design the section
using Manning’s formula. Take N = 0.015.
________________________________________________________________________
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Year : SYME 2013-14
Sub: Hydraulics (17421)
Sample First Test Question Paper:
Course Name:
Civil Engineering Group
Semester:
Fourth
Title of the Subject:
Course Code: CE/CS/CR/CV
Hydraulics
Subject Code: 17421
Marks: 25
Time: 1 Hrs
Q 1. Solve any Three of the following
(3x3)
a) Define the following
i) Specific gravity
ii) Mass density
iii) Weight density
b) Differentiate between simple U-tube manometer and differential U-tube manometer on any three
points.
c) Define Pascal’s law of fluid pressure and give one practical application of it.
d) State three limitations of piezometer
Q 2. Solve any Two of the following.
(2x4)
a) Differentiate between Ideal fluid and Real fluid on any four points.
b) The mass density of lubricating oil is 900kg/m³. Calculate specific weight and specific gravity.
c) A tank square in plan and with vertical side contains oil of specific gravity 0.8 upto a depth of
1.5 m. The size of tank is 1.5x1.5x2.5m. Calculate the total pressure and position of centre of
pressure on one side of a tank.
Q 3. Solve any Two of the following.
(2x4)
a) Calculate the height of mercury column equivalent to gauge pressure of 30 N/cm² and for
0.3 N/mm².
b) An inverted U tube differential manometer when connected to two parallel pipes carrying
water shows reading 200 mm of oil of specific gravity 0.6. If a differential mercury manometer
is connected to these pipes. Calculate the manometer reading.
c) A circular plate 1.5 m diameter is placed vertically in water, so that the centre of plate is
2.5 m below the free surface. Calculate the total pressure on the plate and depth of centre of pressure.
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Year : SYME 2013-14
Sub: Hydraulics (17421)
Sample Second Test Question Paper:
Course Name:
Civil Engineering Group
Semester:
Fourth
Title of the Subject:
Course Code: CE/CS/CR/CV
Hydraulics
Subject Code: 17421
Marks: 25
Time: 1 Hrs
Q 1. Solve any Three of the following
(3x3)
a) Define Reynold’s number and state its two applications.
b) List the different six types of minor losses.
c) Draw neat sketches of three shapes of artificial channel.
d) Mention three limitations of Bernoulli’s theorem.
Q 2. Solve any Two of the following.
(2x4)
a) Write any four differences between laminar flow and turbulent flow.
b) A pipe 300m long has slope 1:100 tapers from 600mm to 300mm diameter at lower end. The discharge of
water flowing through pipe is 600 lit/sec. The pressure at higher end is 7 N/cm² and that at lower end is
11N/cm². Determine i) Direction of flow. ii) loss of head.
c) Calculate the loss of head per km length of a new cast iron pipe having 200 mm diameter, friction factor,
f=0.04, discharge is 10 lps.
Q 3. Solve any Two of the following
(2x4)
a) Define the following:
i) Wetted perimeter
ii) Wetted area
iii) Hydraulic mean depth
iv) Froud’s number
b) Sketch the hydraulic jump and state the two uses of it.
c) A rectangular channel has bed width 3 m and depth of flow 1.2 m, bed slope 1:2000, C= 85. Calculate the
capacity of canal and depth of flow when capacity is reduced to 50%.
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