This document contains 8 questions related to fluid mechanics and hydraulic machinery. It provides details of an exam, including the code, set number, subject, time allotted, and maximum marks. The questions cover various topics like viscosity, fluid flow, hydraulic turbines, pumps and other hydraulic machines. They involve deriving equations, solving numerical problems, and explaining concepts related to fluid properties, fluid dynamics, hydraulic components and systems.
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This document appears to be an exam for the subject of Electrical Measurements. It contains 8 questions related to electrical measurement techniques and instruments. Some key topics covered in the questions include:
- Potential divider circuits for multi-range voltmeters
- Current and potential transformers
- Errors in dynamometer wattmeters and their compensation
- Operation of induction watt-hour meters
- Construction and working of potentiometers, ballistic galvanometers, and flux meters
- Measurement of high resistances using methods like loss of charge and Kelvin's double bridge
- Measurement of capacitance and inductance using bridges like Anderson bridge
This document contains a sample test for the JEE (Main) 2015 exam. It includes 42 multiple choice questions across various subjects like physics, chemistry, and mathematics. The questions cover topics such as capacitors, radioactive decay, organic reactions, thermodynamics, coordination compounds, and molecular orbitals.
The document contains equations for calculating anode resistance and life for various corrosion protection systems. It provides the Dwight equation for single and multiple vertical anodes as well as a modified Dwight equation for horizontal anodes. Tables give consumption rates and efficiencies for different anode types along with equations for calculating ground bed resistance, rectifier efficiency, and the number of anodes required for a given protection current.
The document is a set of exam questions for a Power Plant Engineering course. It includes 8 questions related to topics like energy sources, coal handling, diesel and gas turbine power plants, hydroelectric plants, nuclear power plants, and load calculations. The questions require explanations of concepts, diagrams, and calculations.
Ies 2013 civil engineering objective paper ii solved question paperThomas Britto
1) The document provides instructions for a civil engineering exam that will contain 120 multiple choice questions split into two parts. It details how candidates should fill out their answer sheets and specifies there will be penalties for incorrect answers.
2) Candidates are instructed not to open the test booklet until instructed to do so. They are also told to write their roll number on the test booklet and to only mark their answers on the separate answer sheet provided.
3) The instructions specify that all questions are equally weighted but penalties will be assessed for incorrect answers by deducting one-third of the marks assigned to that question. No penalties will be assessed for questions left blank.
This document provides a summary of key concepts from Chapter 20 on thermodynamics in a physics textbook. It includes 28 sample problems and their solutions demonstrating applications of the first and second laws of thermodynamics. The problems calculate changes in internal energy, heat, and work for various thermodynamic processes including isothermal, adiabatic, isobaric, and isochoric processes. The document also defines and provides examples of calculating efficiency for heat engines operating between different temperature ranges based on the Carnot cycle.
Fluid mechanics deals with the behavior of fluids at rest and in motion. It can be divided into three divisions: hydrostatics, kinematics, and dynamics. Hydrostatics studies fluids at rest, kinematics deals with fluid motion without forces, and dynamics relates velocities, accelerations, and forces acting on fluids. Fluids include liquids and gases, with gases being readily compressible and liquids being nearly incompressible. Fluid mechanics has many applications in daily life and engineering.
E L E C T R I C A L M E A S U R E M E N T S J N T U M O D E L P A P E R{Wwwguest3f9c6b
This document appears to be an exam for the subject of Electrical Measurements. It contains 8 questions related to electrical measurement techniques and instruments. Some key topics covered in the questions include:
- Potential divider circuits for multi-range voltmeters
- Current and potential transformers
- Errors in dynamometer wattmeters and their compensation
- Operation of induction watt-hour meters
- Construction and working of potentiometers, ballistic galvanometers, and flux meters
- Measurement of high resistances using methods like loss of charge and Kelvin's double bridge
- Measurement of capacitance and inductance using bridges like Anderson bridge
This document contains a sample test for the JEE (Main) 2015 exam. It includes 42 multiple choice questions across various subjects like physics, chemistry, and mathematics. The questions cover topics such as capacitors, radioactive decay, organic reactions, thermodynamics, coordination compounds, and molecular orbitals.
The document contains equations for calculating anode resistance and life for various corrosion protection systems. It provides the Dwight equation for single and multiple vertical anodes as well as a modified Dwight equation for horizontal anodes. Tables give consumption rates and efficiencies for different anode types along with equations for calculating ground bed resistance, rectifier efficiency, and the number of anodes required for a given protection current.
The document is a set of exam questions for a Power Plant Engineering course. It includes 8 questions related to topics like energy sources, coal handling, diesel and gas turbine power plants, hydroelectric plants, nuclear power plants, and load calculations. The questions require explanations of concepts, diagrams, and calculations.
Ies 2013 civil engineering objective paper ii solved question paperThomas Britto
1) The document provides instructions for a civil engineering exam that will contain 120 multiple choice questions split into two parts. It details how candidates should fill out their answer sheets and specifies there will be penalties for incorrect answers.
2) Candidates are instructed not to open the test booklet until instructed to do so. They are also told to write their roll number on the test booklet and to only mark their answers on the separate answer sheet provided.
3) The instructions specify that all questions are equally weighted but penalties will be assessed for incorrect answers by deducting one-third of the marks assigned to that question. No penalties will be assessed for questions left blank.
This document provides a summary of key concepts from Chapter 20 on thermodynamics in a physics textbook. It includes 28 sample problems and their solutions demonstrating applications of the first and second laws of thermodynamics. The problems calculate changes in internal energy, heat, and work for various thermodynamic processes including isothermal, adiabatic, isobaric, and isochoric processes. The document also defines and provides examples of calculating efficiency for heat engines operating between different temperature ranges based on the Carnot cycle.
Fluid mechanics deals with the behavior of fluids at rest and in motion. It can be divided into three divisions: hydrostatics, kinematics, and dynamics. Hydrostatics studies fluids at rest, kinematics deals with fluid motion without forces, and dynamics relates velocities, accelerations, and forces acting on fluids. Fluids include liquids and gases, with gases being readily compressible and liquids being nearly incompressible. Fluid mechanics has many applications in daily life and engineering.
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The document contains information about an examination for Mechanics of Fluids, including:
- The exam code, date, subject, and maximum marks
- Instructions to answer any 5 of 8 questions, with all questions carrying equal marks
- The 8 questions cover various topics in fluid mechanics, such as Pascal's law, streamlines, pressure differences, drag forces, boundary layers, pipe flow, and venturimeters.
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1) Definitions of terms like bulk modulus, viscosity, stream function, and momentum equation.
2) Calculations involving power required to overcome viscous resistance, velocity and velocity potential, force on a pipe bend.
3) Derivations of equations for head loss in pipes, heat loss from a hollow sphere, film heat transfer coefficient, and effectiveness of a counterflow heat exchanger.
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This document contains 8 questions related to hydraulic machinery and systems. The questions cover topics such as water jets, pumps, turbines, pipes and hydraulic systems. They involve calculating things like forces on plates from water jets, pump characteristics, power transmission through pipes, and more. The questions require applying equations and principles related to fluid mechanics, hydraulics, and hydraulic machinery.
This document contains information about a hydraulics and hydraulic machinery exam for a second year civil engineering course. It includes 8 questions on topics like specific energy, open channel flow, hydraulic machines, pumps, and hydroelectric power. Students must answer any 5 of the 8 questions. The questions involve derivations, calculations, and explanations related to hydraulics and hydraulic machinery concepts and applications.
This document contains a fluid mechanics exam for aeronautical engineering students. It includes 16 multi-part questions testing knowledge of fluid mechanics principles and calculations. The questions cover topics like viscosity, pipe flow, pumps, turbines, and dimensional analysis. Students are asked to define terms, calculate values like velocity and pressure given input parameters, analyze diagrams, and describe concepts such as boundary layers and model similarity. The exam is divided into three parts with varying point values assigned to parts A, B, and C.
This document contains 8 questions related to mechanics of fluids for an aeronautical engineering exam. The questions cover topics like Darcy's formula for head loss in pipes, Bernoulli's equation, boundary layers, stagnation properties, viscosity, venturimeters, and more. Students are asked to solve problems and derive equations related to fluid flow concepts.
This document appears to be an exam for a fluid mechanics and machinery course. It contains three parts:
Part A contains 10 short answer questions worth 2 marks each about fluid mechanics topics like the differences between liquids and gases, types of energy in flowing fluids, boundary layers, pipes in series, dimensional analysis, and hydraulic machinery components like impellers and turbines.
Part B contains 5 longer answer questions worth 13 marks each involving more complex fluid mechanics calculations and explanations of topics like bulk modulus, lubrication, flow types, pipe networks, boundary layers, dimensional analysis, and hydraulic similitude.
Part C contains 1 long answer question worth 15 marks involving detailed calculations about a Pelton turbine or ship model testing depending on
This document contains an exam paper for a Mechanics of Fluids and Hydraulic Machines course. It has two parts - Part A with 10 short answer questions worth a total of 25 marks, and Part B with 5 longer answer questions in each of 5 units worth 10 marks each. Some of the concepts and topics examined include: distinguishing between different types of manometers, pressure gauges, pumps and turbines; defining viscosity, surface tension, vapor pressure and their influence on fluid motion; deriving equations like continuity, Bernoulli and discharge equations; describing boundary layer flow and methods to prevent separation; explaining the working of components like venturi meters, draft tubes and pump impellers; and defining terms like specific speed, NPSH
1. This document contains an exam for a Hydraulics 1 course, including 6 questions covering concepts like fluid viscosity, pipe flow, hydroelectric power, and fluid mechanics.
2. The first question has 4 parts involving calculations of fluid viscosity from torque measurements, belt power over an oil film, pressure readings from a U-tube manometer, and length of a porous bed to absorb stormwater flow.
3. The second question involves calculating the weight and horizontal force on a submerged cylinder, and velocities and pressures in an open-top pipeline.
4. Additional questions cover topics like siphon summit pressure, residual head after a turbine, maximum height of a liquid jet from an inclined nozzle,
ANURAG TYAGI CLASSES (ATC) is an organisation destined to orient students into correct path to achieve
success in IIT-JEE, AIEEE, PMT, CBSE & ICSE board classes. The organisation is run by a competitive staff comprising of Ex-IITians. Our goal at ATC is to create an environment that inspires students to recognise and explore their own potentials and build up confidence in themselves.ATC was founded by Mr. ANURAG TYAGI on 19 march, 2001.
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This document provides a sample question paper for a fourth semester diploma course in civil engineering. It contains 6 long answer questions and 25 short answer questions testing concepts in hydraulics. The questions cover topics such as uses of hydraulics, fluid properties, pressure measurement, pipe flow, open channel flow, pumps and hydraulic structures. The paper tests both conceptual understanding and problem solving abilities of students.
Electrical Measurements Jntu Model Paper{Www.Studentyogi.Com}guest3f9c6b
This document contains 8 questions related to electrical measurements. Question 1 asks about potential divider arrangements for multi-range voltmeters and converting a meter movement into a multi-range voltmeter. Question 2 asks about differences between current and potential transformers, sources of errors in current transformers, and the equivalent circuit of a current transformer. Question 3 asks about types of errors and compensation methods in dynamometer-type wattmeters and differences between LPF and UPF wattmeters.
This document contains a question bank for the fluid mechanics course CE6451 Fluid Mechanics and Machinery. It includes multiple choice and numerical questions covering topics like fluid properties, flow characteristics, flow through pipes, dimensional analysis, and similitude. The questions are divided into two parts - short answer conceptual questions in Part A and more complex numerical problems in Part B. An introduction provides background on the prepared by, course code, and college details.
Human: Thank you for summarizing the key information from the document in 3 concise sentences. You captured the essential elements like the topic being a question bank for a fluid mechanics course, the division of questions into conceptual and problems sections, and provided relevant context without unnecessary details
Assignment 3 (CH. 7-9)
Chapter 7
Questions (use complete sentences)
1) What is an electric field? Sketch the shape of the electric field around a single proton.
2) If a uniform electric field is pointing east, what is the direction of the force on an electron? What is the direction of force on a positive particle?
3) If electrons are flowing counter clock wise in a circuit, which way is the conventional current flowing?
4) Explain what current, voltage, and resistance are?
5) Describe the differences between circuits with resistors connected in series vs. parallel.
Problems (show your work)
1) Two charged particles exert an electrical force of 16 N on each other. What will the magnitude of the force be if the distance between them is reduced by half? What if the distance is doubled?
2) What would the separation between two particles each with a charge of 1 C have to be so that they each feel a force of 1 N.
3) A particle with a charge of 2.0 x 10-6 C experiences an upward force of 8N. What is the magnitude and direction of the electric field at that point? What if the charge was negative?
4) During 30 second of use, 250 C of charge flow through a microwave over. What is the current?
5) A current of 12 A flows through an electric heater operating on 120 V. What is the heater’s resistance?
6) The resistance of each brake light on an automobile is 6.6 Ω. Use the fact that cars have 12 V electrical systems to calculate the current that flows through each bulb.
7) An electric eel can generate a 400 V, 0.5 A shock for stunning its prey. What is the eel’s power output?
8) A clock consumes 2 W of electrical power. How much energy does it use each day?
Challenge (show work)
1) Three particles each with a charge of 2.5 x 10-6 C are located on the x-axis. There coordinates are (0,0), (2,0), and (6,0). What is the magnitude and direction of the electrical force on the particle located at (2,0)?
Chapter 8
Questions (use complete sentences)
1) Sketch the shape of the magnetic field around a bar magnet.
2) List the main type of electromagnetic waves in order of increasing frequency.
3) How does the radiation emitted by a black body change as its temperature increases?
4) What does a transformer do?
5) What are the three observations of magnetism talked about in class?
Problems (show work)
1) A cell phone charger is a transformer that reduces 120 V to 5V. For each 1,000 turns in the input coil, how many turns are there in the output coil?
2) What is the wavelength of a 60,000 Hz radio wave?
3) A transformer has an input coil of 2,000 turns, and an output coil of 500 turns. If 120 V is connected to the input coil how much voltage will it output?
4) Compute the frequency of an EM wave with a wavelength of 0.0542 m.
5) How much more energy would a black body radiate at 900 K vs 300 K?
6) What wavelength of light do humans mostly radiate if the human body temperature is 310 K?
Chapter 9
Questions (use complete sentences)
1) .
This document contains a question paper for a mechanical engineering examination with 15 multiple choice and numerical problems covering topics in fluid mechanics and machinery. The problems address concepts like cavitation, pressure drops in pipes, dimensional analysis, flow through turbines and pumps, and hydraulic efficiencies. The questions require calculations of flow rates, head losses, velocity triangles, and efficiencies based on given fluid properties, pipe dimensions, pump/turbine specifications, and operating conditions.
This document contains eight questions related to groundwater development and management. The questions cover topics such as remote sensing applications for groundwater assessment, equations relating freshwater outflow and interface length in confined and unconfined aquifers, seismic refraction methods, water balance equations, calculating drawdown and well yield, sieve analysis to determine aquifer material properties, and partial differential equations governing groundwater flow. Diagrams and detailed calculations are required to solve some of the problems.
This document contains solved problems from past years' electrical engineering exams. It includes 6 questions covering various electrical engineering concepts like circuit analysis, electromagnetism, instrumentation, electric machines, and power systems. Some key details include:
- Question 1 involves resistance calculations, Kirchhoff's laws, Thevenin's theorem, and capacitor calculations.
- Question 2 covers electromagnetism concepts like magnetic flux, self-inductance, and inductive circuits.
- Question 3 includes instrument calculations, power factor, and three-phase power systems.
- Questions 4 and 5 involve transformers, electric machines, and power system faults/operation.
- Question 6 discusses semiconductor devices, fuse selection, and
1. The document provides questions for a geotechnical engineering exam, with two main parts (A and B) containing multiple choice and descriptive questions.
2. Part A asks about objectives of soil exploration, methods for controlling groundwater during excavation, stress distribution theories, use of flownets, earth pressure theories, and locating phreatic lines.
3. Part B covers causes of slope failure, stability analysis methods, factors affecting bearing capacity, and terms related to settlement of foundations. Descriptive questions address topics like selection of boring depths, Newmark's method, seepage calculations, and stability of canal slopes.
This document contains four sets of questions for an exam on Basic Electronic Devices and Circuits. Each set contains 8 questions related to topics like electric fields, capacitors, diodes, transistors, amplifiers, and oscillators. The questions test understanding of concepts and involve calculations related to electronic devices and circuits.
Basicelectronicdevicesandcircuits Jntu Model Paper{Www.Studentyogi.Com}guest3f9c6b
This document contains exam questions for the course "Basic Electronic Devices and Circuits". It is divided into 3 sets of questions. The questions cover topics such as:
1) Characteristics of charged particles in electric fields, calculations involving capacitors and electrons.
2) Applications and specifications of p-n junction diodes, characteristics of zener diodes.
3) Calculations involving rectifier circuits, filters, and dc output values.
4) Transistor biasing configurations, calculations of transistor parameters and currents.
5) Amplifier configurations, feedback, input and output impedances, frequency stability of oscillators.
The questions test understanding of fundamental electronic components and circuits through
5 I N T R O D U C T I O N T O A E R O S P A C E T R A N S P O R T A T I O...guestac67362
This document contains an exam for the course "Introduction to Aerospace Transportation Systems". It consists of 8 questions related to various topics in aerospace engineering. Students must answer any 5 of the 8 questions. Each question is worth 16 or 8 marks, for a total exam mark of 80. The questions cover topics such as the Wright Flyer, aerodynamic forces, aircraft components, performance calculations, flight planning, airworthiness, heating systems, and avionics.
The document discusses the technology needs of future warriors. It describes a system using 4G networks to provide soldiers with enhanced communication, detection, guidance and monitoring abilities. Key features include an ad-hoc peer-to-peer mesh network for communication without fixed infrastructure, geo-location triangulation beyond GPS, security from jamming and capture, and IP networking. The system would provide ground guidance to avoid obstacles, detect and identify units beyond line of sight, transfer targeting data, and monitor soldier status and rescue injured soldiers. It proposes power-assisting exoskeletons and protective nanotechnology uniforms that are lightweight yet strong enough to withstand gunfire. Sensors would allow soldiers to control devices by voice and be monitored for health and
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Assignment 3 (CH. 7-9)
Chapter 7
Questions (use complete sentences)
1) What is an electric field? Sketch the shape of the electric field around a single proton.
2) If a uniform electric field is pointing east, what is the direction of the force on an electron? What is the direction of force on a positive particle?
3) If electrons are flowing counter clock wise in a circuit, which way is the conventional current flowing?
4) Explain what current, voltage, and resistance are?
5) Describe the differences between circuits with resistors connected in series vs. parallel.
Problems (show your work)
1) Two charged particles exert an electrical force of 16 N on each other. What will the magnitude of the force be if the distance between them is reduced by half? What if the distance is doubled?
2) What would the separation between two particles each with a charge of 1 C have to be so that they each feel a force of 1 N.
3) A particle with a charge of 2.0 x 10-6 C experiences an upward force of 8N. What is the magnitude and direction of the electric field at that point? What if the charge was negative?
4) During 30 second of use, 250 C of charge flow through a microwave over. What is the current?
5) A current of 12 A flows through an electric heater operating on 120 V. What is the heater’s resistance?
6) The resistance of each brake light on an automobile is 6.6 Ω. Use the fact that cars have 12 V electrical systems to calculate the current that flows through each bulb.
7) An electric eel can generate a 400 V, 0.5 A shock for stunning its prey. What is the eel’s power output?
8) A clock consumes 2 W of electrical power. How much energy does it use each day?
Challenge (show work)
1) Three particles each with a charge of 2.5 x 10-6 C are located on the x-axis. There coordinates are (0,0), (2,0), and (6,0). What is the magnitude and direction of the electrical force on the particle located at (2,0)?
Chapter 8
Questions (use complete sentences)
1) Sketch the shape of the magnetic field around a bar magnet.
2) List the main type of electromagnetic waves in order of increasing frequency.
3) How does the radiation emitted by a black body change as its temperature increases?
4) What does a transformer do?
5) What are the three observations of magnetism talked about in class?
Problems (show work)
1) A cell phone charger is a transformer that reduces 120 V to 5V. For each 1,000 turns in the input coil, how many turns are there in the output coil?
2) What is the wavelength of a 60,000 Hz radio wave?
3) A transformer has an input coil of 2,000 turns, and an output coil of 500 turns. If 120 V is connected to the input coil how much voltage will it output?
4) Compute the frequency of an EM wave with a wavelength of 0.0542 m.
5) How much more energy would a black body radiate at 900 K vs 300 K?
6) What wavelength of light do humans mostly radiate if the human body temperature is 310 K?
Chapter 9
Questions (use complete sentences)
1) .
This document contains a question paper for a mechanical engineering examination with 15 multiple choice and numerical problems covering topics in fluid mechanics and machinery. The problems address concepts like cavitation, pressure drops in pipes, dimensional analysis, flow through turbines and pumps, and hydraulic efficiencies. The questions require calculations of flow rates, head losses, velocity triangles, and efficiencies based on given fluid properties, pipe dimensions, pump/turbine specifications, and operating conditions.
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1. The document provides questions for a geotechnical engineering exam, with two main parts (A and B) containing multiple choice and descriptive questions.
2. Part A asks about objectives of soil exploration, methods for controlling groundwater during excavation, stress distribution theories, use of flownets, earth pressure theories, and locating phreatic lines.
3. Part B covers causes of slope failure, stability analysis methods, factors affecting bearing capacity, and terms related to settlement of foundations. Descriptive questions address topics like selection of boring depths, Newmark's method, seepage calculations, and stability of canal slopes.
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2) Applications and specifications of p-n junction diodes, characteristics of zener diodes.
3) Calculations involving rectifier circuits, filters, and dc output values.
4) Transistor biasing configurations, calculations of transistor parameters and currents.
5) Amplifier configurations, feedback, input and output impedances, frequency stability of oscillators.
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Code No: R05210202
Set No. 1
II B.Tech I Semester Supplimentary Examinations, November 2008
FLUID MECHANICS AND HYDRAULIC MACHINERY
(Electrical & Electronic Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. (a) Why does the viscosity of a gas increases with the increasing temperature
while that of liquid decreases with increasing temperature.
(b) Glycerin has a density of 1260 3 and kinematic viscosity of 0.00183
2/sec. What shear stress is required to deform this uid at a strain rate of
104 -1?
(c) A thin plate is placed between two at surfaces ‘h’ cm a part such that the vis-
cosity of liquids on the top and bottom of the plate are 1 2 respectively.
Determine the position of the thin plate such that the viscous resistance
to [4+4+8]
uniform motion of the thin plate is minimum. Assume ?h? to be very
2. (a) What do you mean by turbulence ?
small.
(b) What do you mean by one, two, three dimensional ow?
-
(c) Derive the continuity equation for one dimensional uid ow. [2+6+8]
3. (a) Derive the Darcy-weisbach equation for friction head loss in a pipe.
(b) Water is owing through a horizontal pipe line 1500m long and 200mm in
diameter. Pressures at the two ends of the pope line are respectively 12Kpa
and 2Kpa. If f = 0.015, determine the discharge through the pipe in litres per
minute. Consider only frictional loss. [8+8]
4. (a) Derive the expressions for force and work done per second by the jet when it
strikes a curved plate moving in the direction of the jet.
(b) A jet of water 20cm in diameter and moving with a velocity of 20m/sec im-
pinges normally on a series of at vanes mounted on the periphery of a wheel.
If the velocity of the vanes is 8m/sec, determine
i. the force exerted by the jet on the wheel
ii. work done by the jet on the wheel per second and
iii. hydraulic e ciency. [7+9]
5. (a) What are the elements of hydro electric power plants? Describe about water
ways and penstocks with neat sketches if necessary.
(b) The catchment area at a proposed site for a hydropower plant is 200 2 and
possible head of water is 140 m. The average annual rainfall is 145 cm and
the losses are 16%. How much power can be developed? [8+8]
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Code No: R05210202
Set No. 1
6. (a) Why is the end of a draft tube immersed below the tail water level. Explain
with a neat sketch. De ne draft tube e ciency and derive its equation
(b) A Kaplan turbine has the following details about its draft tube. Find the
pressure at inlet of the draft tube.
Inlet diameter of draft tube = 2m
Out let diameter of draft tube = 3m
Velocity of water at outlet = 4.2 m /sec
Atmosphere pressure = 10.1 m of water
Height of draft tube above tail race = 3.5m
Loss of head in draft tube = 0.2 times the velocity head at outlet. [8+8]
7. (a) De ne unit power and unit speed and derive the equations for the same. What
are their uses ?
(b) What is a surge tank and what are the uses of it in a hydropower turbine
installation ? Explain where and how it is located with the help of a neat
sketch. [8+8]
8. (a) What equation is employed to nd the work done by the impeller of a cen-
trifugal pump. Derive the equation for work done.
(b) What are the equations for work done and discharge of a reciprocating pump?
De ne the slip and coe cient of discharge of a reciprocating pump. [8+8]
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Code No: R05210202
Set No. 2
II B.Tech I Semester Supplimentary Examinations, November 2008
FLUID MECHANICS AND HYDRAULIC MACHINERY
(Electrical & Electronic Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. (a) Obtain an expression for capillary rise of a liquid.
(b) The velocity distribution over a plate is given by V = 1/3 y - 2 in which v
is the velocity in m/sec at adistance y metres obve the plate. Determine the
stress at y = 0 and y = 0.1 m. Take = 0 835 - 2 [8+8]
2. A pipeline is 15 cm in diameter and is at an elevation of 100 m at section A. At
section B, it is at an elevation of 107.0 m and has a diameter of 30 cm. When a
discharge of 50 lit/sec of water is passed through this pipe, the pressure at section
A is observed to be 30 KPa. The energy loss in the pipe is 2 m. Calculate the
pressure at B when the ow is (i) from A to B, (ii) from B to A. [16]
3. (a) Explain how the following ow problems are analyzed.
i. Series pipe connection
ii. Parallel pipe connection
iii. Equivalent pipe connection.
(b) Water ows through a 10cm diameter, 30m long pipe at a rate of 1400 rpm.
What percent of head would be gained by replacing the central one third
length of pipe by another pipe of 20cm diameter. Assume that the changes
in section are abreept and f = 0.008 for all pipes. Neglect entrance and exit
losses but consider ma jor loss and losses due to sudden contraction and sudden
expansion. [9+7]
4. (a) Derive an expression for the force exerted by a jet striking the curved plate at
one end tangentially when the plate is symetrical.
(b) A jet of water 120 mm in diameter and moving with a velocity of 25m/sec
strikes normally on a at plate. Determine the power developed and the
e ciency of the system when
i. the plate is stationary
ii. the plate is moving with a velocity of 8m/sec in the direction of the jet.
And
iii. the plate is moving with a velocity of 8m/sec towards the jet. [7+9]
5. (a) What is the name of hydroelectric power station that uses the ow of stream
as it is available ? How do you compare this with reservoir or storage type of
power station ? Explain with neat sketches if necessary.
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Code No: R05210202
Set No. 2
(b) The hydro power plant has a turbine with the following details. Find the
power developed and what is the speci c speed of the turbine. Hydraulic
e ciency = 90%. Net head =65 1 discharge=15 3/s, speed=100 rpm [8+8]
6. (a) What is the classi cation of turbines ? How do you di erentiate among low
head, medium head and high head turbines ?
(b) A Pelton wheel is working under a head of 45m and the discharge is 0 8 3 .
The mean bucket speed is 14m/sec. Find the power produced if the jet is
de ected by the blades through an angle of 1650. The coe cient of velocity is
0.985 [10+6]
7. (a) What is speci c speed of a turbine ? Derive its expression and compare it
with unit speed. What are its applications ?
(b) An Impulse turbine has to maintain the same e ciency under di erent working
conditions. By what percentage shall the discharge increase if the head changes
from 50m to 75m. [10+6]
8. (a) What is manometric e ciency of a centrifugal pump? De ne with the help of
a sketch. Di erentiate it from volumetric e ciency and mechanical e ciency.
(b) A single acting reciprocating pump has a plunger of diameter 0.3m and stroke
of length 0.4m. If the speed of the pump is 60 rpm and coe cient of discharge
is 0.97, determine the percentage slip and actual discharge of the pump. [8+8]
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Code No: R05210202
Set No. 3
II B.Tech I Semester Supplimentary Examinations, November 2008
FLUID MECHANICS AND HYDRAULIC MACHINERY
(Electrical & Electronic Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. (a) Distinguish between ideal uids and real uids. Explain the importance of
compressibility in uid ow.
(b) The velocity distribution in a ow of thin lm of oil down an inclined channel
is given by = 2µ * ( 2 - 2) . Where d=depth of ow, = angle of
inclination of that channel to the horizontal, u = velo city at a depth ‘y’ below
the free surface, = unit weight of oil and = dynamic viscosity oil. Calculate
the shear stress
i. on the bottom of channel,
ii. at mid depth and
iii. at the free surface. [8+8]
2. (a) State the momentum equation. How will you apply momentum equation for
determining the force exerted by a owing uid on a pipe bend?
(b) The top and bottom diameters of a 2.0 m long vertical tapering pipe are 10
cm and 5 cm respectively. Water ows down the pipe at a rate of 30 lit/sec.
Find the pressure di erence between the two ends of the pipe. [8+8]
3. (a) Derive an expression for head loss due to sudden enlargement of a pipe
(b) An oil of speci c gravity 0.85 and viscosity 5CP ows through a pipe of di-
ameter 400mm at the rate of 50 lit/sec. Find the head lost in friction in this
pipe of length 1000Km. Assume that f = 0.079/ N N is Reynolds
Number. [8+8]
4. (a) What do you mean by impact of jet. Explain
(b) Derive an expression for force exerted by the jet on a stationary vertical plate.
(c) A 10cm diameter jet of water exerts a force of 2 KN in the direction of ow
against a stationary at plate which is inclained at an angle of 300 with the
axis of the stream. Find
i. Force normal to the plate
ii. velocity of the jet
iii. mass ow rate of water Kg/sec. [2+6+8]
5. (a) De ne mass curve. Explain how the storage capacity of a reservoir is estimated
using a mass curve.
(b) Di erentiate between net head and gross head of a turbine with a neat sketch.
List out the e ciencies of a turbine and de ne them. [8+8]
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Code No: R05210202
Set No. 3
6. (a) De ne a turbine and bring out the di erences between reaction turbine and
impulse turbine in a tabular form.
(b) The details of a Pelton wheel turbine installation are given below. Find the
power developed and hydraulic e ciency.
Gross head = 510 m
Loss of head in penstock = 30%
Discharge through nozzle = 2.2 3 / sec
Angle of de ection of jet = 1650
Co e cient of velocity v = 1
Speed ratio u= 0.45 [8+8]
7. (a) De ne and write about characteristic curves of hydraulic turbines ? With the
help of neat sketches explain their practical uses.
(b) A turbine develops 10000 Kw with an overall e ciency of 90%. The head of
water is 90 m and the speed of turbine is 120 rpm. What is the ow rate
of water for the turbine ? Find unit power, unit discharge, unit speed and
speci c speed of the turbine. What is the type of turbine. [8+8]
8. (a) Why do es a centrifugal pump get its name ? Explain the working of a cen-
trifugal pump with a neat diagram showing di erent parts.
(b) Explain clearly the e ect of acceleration of piston on velocity and pressure in
suction pipe and delivery pipe. De ne slip and coe cient of discharge and
write their equations. [6+10]
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Code No: R05210202
Set No. 4
II B.Tech I Semester Supplimentary Examinations, November 2008
FLUID MECHANICS AND HYDRAULIC MACHINERY
(Electrical & Electronic Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. (a) State Newton’s equation of viscosity and give examples of its application.
(b) An oil of viscosity 5 poise is used for lubrication between a shaft and sleeve.
The diameter of shaft is 0.5 m and it rotates at 200 rpm. Calculate the horse
power lost in the oil for a sleeve length of 100 mm. The thickness of the oil
lm is 1.0 mm. [8+8]
2. (a) Explain what is meant by stream tube. What is the use of concept of stream
tube?
(b) At a point in the pipe line where diameter is 20 cm, the velo city of water is
4 m/s and the pressure is 343 2. At a point 15 cm downstream, the
diameter reduces to 10cm. Calculate the pressure at this point, if the pipe is
vertical with ow downward. Neglect the losses. [8+8]
3. (a) De ne Ma jor Energy Loss and Minor Energy Loss.
(b) Brie y explain Hydraulic Gradiant Line and Total Energy Line.
(c) The rate of ow of water through a horizontal pope is 0 3 3 . The di-
ameter of the pipe is suddenly enlarged fron 25cm to 50cm. The pressure
intensity in the smaller pipe is 1 4 2. Determine loss of head due to
sudden enlargement, pressure intensity in the large pipe and power lost due
to enlargement. [4+4+8]
4. (a) Derive the expressions for force and work done per second by the jet when it
strikes a at vertical plate moving in the direction of the jet and away from
the jet.
(b) A jet of water of 75mm diameter strikes a curved vane at its center with a
velo city of 20m/sec. The curved vane is moving with a velocity of 8m/sec in
the direction of jet. Find the force exerted on the plate in the direction of the
jet power and e ciency of the jet. Assume the plate to be smooth. [8+8]
5. (a) List and write elaborately about the elements of Hydroelectric station with
neat sketches .
(b) The head and discharge of a hydro electric plant are 28m and 330 3
respectively. The installed turbine works with an e ciency of 86%. Find the
power developed. [10+6]
6. (a) How are the turbines classi ed under di erent heads ? Give sketches wherever
necessary.
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Code No: R05210202
Set No. 4
(b) A Pelton wheel turbine works with the following details. Determine the water
power available at the nozzle and hydraulic e ciency
Net head = 700 m
Speed of runner = 950 rpm
Diameter of runner = 1.2 m
Discharge through the nozzle = 0.15 3/ sec
Side clearance angle = 150
Co e cient of velocity v = 0.9
Blade friction coe cient K = 1
[8+8]
7. (a) What is meant by cavitation ? What is Thoma,s cavitation factor and what
is its signi cance for turbines ? Elaborate what you understand by water
hammer phenomenon in turbines.
(b) A turbine works under a head of 25m at 200 rpm and the discharge is 9 3 /
sec. If the overall e ciency is 90%, determine Power generated, Speci c speed
of the turbine and Type of turbines. [10+6]
8. (a) What is manometric e ciency of a centrifugal pump? De ne with the help of
a sketch. Di erentiate it from volumetric e ciency and mechanical e ciency.
(b) A single acting reciprocating pump has a plunger of diameter 0.3m and stroke
of length 0.4m. If the speed of the pump is 60 rpm and coe cient of discharge
is 0.97, determine the percentage slip and actual discharge of the pump. [8+8]
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