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[4660] - 102M.E. (Civil) (Water Resource & Environmental Engg.)

b- ADVANCED WATER TREATMENT & WATER SUPPLYENGINEERING

(2008 Course) (Semester - I) (Elective - II) (501605)

Time :3 Hours] [Max. Marks : 100Instructions to the candidates:

1) Answer all questions from section I &II.2) Neat diagrams must be drawn wherever necessary.3) Figures to the right indicate full marks.4) Use of logarithmic tables slide rule, Mollier charts, electronic pocket calculator

and steam tables is allowed.5) Assume suitable data, if necessary.

P3249 [Total No. of Pages : 1SEAT No. :

SECTION - I

Q1) Explain in detail the principle and working of electro dialysis and ultra filtrationfor water treatment. [16]

Q2) Discuss the principle, concept and necessity of aeration. Explain variousmethods of aeration with neat sketches. [16]

Q3) Design an aerated grit chamber for the treatment of municipal wastewater. Theaverage flow rate is 0.5 m3/s. Take peak factor as 2.75. [18]

SECTION - IIQ4) Differentiate between slow sand & rapid sand gravity filters. Explain

backwashing of rapid sand filters. [16]

Q5) Discuss Adsorption processes, types of adsorption, factors influencingadsorption & adsorption isotherms. [16]

Q6) a) What is the theory of disinfection? State the factors affecting disinfection.Discuss the chemistry of chiorination. [9]

b) Briefly discuss ion exchange method, ion exchange chemistry and itsapplications for hardness and TDS removal. [9]


[Total No. of Pages : 2

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[4660] - 106M.E. (Civil) (Water Resources and Environmental Engg.)

OPEN CHANNEL HYDRAULICS (2012 Pattern) (Elective - II) (501609)


1) Answers to the two sections should be written in separate answer books.2) Answer any three questions from each section.3) Neat diagrams must be drawn wherever necessary.4) Figures to the right side indicate full marks.5) Use of Calculator is allowed.6) Assume suitable data, if necessary.


SECTION - I

Q1) a) A 3.6m wide rectangular channel had badly damaged surfaces and had aMannings n = 0.030. As a first phase repair, its bed was lined withconcrete (n = 0.015). If the depth of flow remains same at 1.2m beforeand after the repair, what is the increase of discharge obtained as a resultof repair. [8]

b) Derive Chezys formula. Derive relative between Chezys C andMannings n. [8]

Q2) a) Derive Momentum equation for a hydraulic jump with neat sketch andexplain why the momentum principle is used in the analysis of hydraulicjump. [8]

b) The Rihand dam in U.P., India, has a sloping apron stilling basin with aslope of 0.077. If the depth for a flood flow of 64.0 m3/s per meter widthis 1.93m, estimate the sequent depth, length of the jump and energy lossin the hydraulic jump. [8]

Q3) a) What is control section? Where it is useful? Explain any two cases ofcontrol section with suitable diagrams. [8]

P.T.O.

b) A trapezoidal channel having B = 6.0m, side slope m = 2.0, So = 0.0016,Mannings n = 0.02, carries a discharge of 12.0 m3/s. Calculate and plotthe back water curve produced due to operation of a sluice gate at adownstream side which backs up the water to a depth of 4.0m immediatelybehind it. Use direct step method. [8]

Q4) Write short notes on (any three) [18]a) Standard step method of GVF computationb) Location of hydraulic jumpc) M and S profiles of GVFd) Types of open channels.

SECTION - II

Q5) a) Define Spatially varied Flow and give its detail classification. [8]b) Derive the De Marchi equation for side weirs. [8]

Q6) a) What is flood routing? Describe categories of flood routing. List hydraulicand hydrologic flood routing methods. Derive equation for spatially variedflow with increasing discharge. [8]

b) Describe explicit method of channel flood routing. [8]

Q7) a) What is dam break problem? Derive the equation for discharge intensityin dam break problem. [8]

b) Derive differential form of monoclinal rising wave. [8]

Q8) Write short notes on (any three) [18]a) Types of surges,b) Classification of bottom racks.c) Method of characteristics,d) Saint Venants equation for celerity of wave.

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[4660] - 135M.E. (Mechanical) (Heat Power)

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[4660] - 152M.E. (Mechanical) (Design Engg.)b- INDUSTRIAL TRIBOLOGY

(2008 Course) (Semester - II) (Elective - IV) (502212)


1) Answer any three questions from each section.2) Answers to the two sections should be written in separate books.3) Neat diagrams must be drawn wherever necessary.4) Figures to the right indicate full marks.5) Assume suitable data if necessary.


SECTION - I

Q1) a) Explain the term Wear. Explain in detail different types of wear experiencedin mechanical systems? Discuss the effect of temperature and load onwear. [8]

b) Derive and Explain terms in Rowes Modified adhesion Theory. [8]

Q2) a) A hydrodynamic plane slider bearing operates under the followingconditions. [10]

Required load carrying capacity = 30.5 kN

Bearing width to length ratio = 3.75

Attitude = 2.0

Minimum oil film thickness = 0.02mm

Viscosity of oil = 20 cP

Sliding speed = 2 m/s

Neglecting the side leakage, Calculate

P.T.O.

i) The bearing dimensions

ii) The pressure at a distance of 50mm from leading edge

iii) The tractive effort on bearing

iv) The coefficient of friction and

v) The power lost in friction.

b) Explain the principal of working of Hydrodynamic bearing. [6]

Q3) a) Derive an expression for load carrying capacity and oil flow rate forhydrodynamic step bearing. State the assumptions made. [10]

b) Write assumptions made while deriving Reynolds equation and limitationsof Reynolds equation. [6]

Q4) Write a note on following [Any Three] [18]

a) Lubrication Regimes

b) Adhesion Theory of Friction. [simple]

c) Heat in bearings

d) Infinitely short and infinitely long journal bearings.

SECTION - II

Q5) a) A circular plate of 60mm radius is approaching the base plane at a velocityof 150 mm/s at a instant when the oil-film thickness is 0.2mm. If theabsolute viscosity of the oil is 0.025 Pa-s, calculate [10]

i) the load carrying capacity of the oil-film at the given instant:

ii) The maximum pressure and

iii) The average pressure.

b) Explain any six situations where Hydrostatic squeeze film exists. [6]

[4660]-152 2

Q6) Using modified Reynolds equation for Elasto-hydrodynamic lubrication, deriveErtel Grubin equation. State limitations of this equation. [16]

Q7) Assuming generalized Reynolds equation, derive Reynolds equation foraerodynamic bearings in dimensionless form. Explain various terms in theequation. State the advantages and limitations of air lubricated bearings. Givetheir applications. [16]

Q8) Write a note on following [Any Three] [18]a) Mechanism of tyre-road interaction.

b) Tribological aspect of wheel on rail contact.

c) Power losses in Hydrostatic step bearing

d) Piston pin lubrication.

[4660]-152 3

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[4660] - 168M.E. (Mechanical) (Mechatronics) (Semester - II)

Automotive Electronics(Elective - III) (2008 Pattern)

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[4660] - 178M.E. (Mechanical) (Automotive Engineering)

a- TRIBOLOGY AND PREVENTIVE MAINTENANCE (2008 Pattern) (Elective - II) (502303)


1) Answer any three questions from each section.2) Answers to the two sections must be written in separate answer books.3) Neat diagrams must be drawn wherever necessary.4) Figures to the right indicate full marks.


SECTION - I

Q1) Derive the two dimensional Reynolds equation from the first principle. Writethe assumptions of Reynolds equation. [18]

Q2) a) Differentiate between Hydrodynamic bearing and Hydrostatic bearing.[8]b) Explain the effect of temperature and pressure of viscosity of lubricating

oil. [8]

Q3) a) State the different ways of the disposal of used oils. [6]b) Using deformation theory, derive the equation for coefficient of friction

due to deformation with usual notations. [10]

Q4) a) What is surface fatigue wear? Where it is observed?b) Explain Junction Growth Theory.c) List the causes of friction.d) Explain Stick Slip phenomenon.

[16]

P.T.O.

Q5) a) Explain the mechanism of pressure development in hydrodynamiclubrication. [8]

b) Explain the following properties of lubricants in brief: [8]i) Viscosityii) Viscosity Indexiii) Alkalinityiv) Demulsibility

SECTION - II

Q6) a) Explain Tilting pad journal bearing with neat sketch. [8]b) Explain the basic concept and application of Elasto-hydrodynamic

lubrication. [8]

Q7) a) State considerations while selecting a lubricant for metal working. [8]b) Explain merits, demerits and application of gas lubricated bearing. [8]

Q8) a) What do you understand by squeeze film lubrication? [6]b) Derive Hertz equations for deformation and pressure. [10]

Q9) a) What do you understand by preventive maintenance? How is it differentfrom corrective maintenance?

b) Explain maintenance schedule for passenger cars.c) Write short note on greasing of vehicles.

[18]

Q10) Explain in detail: [16]a) Maintenance of drive line system.b) Maintenance of electrical systems.

[4660]-178 2

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SECTION - I

Q1) a) Explain magnetic Leviation system for an experimental rail vehicleconsidering it as distributed parameter model. [9]

b) Obtain the distributed parameter model in case of heat translation byconduction in an insulated bar. [8]

c) Discuss in detail the Lumped Parameter Approximations for vibrationsof a rod. [8]

Q2) a) Explain in detail anyone multiple regression and Least square methodfor modeling. [8]

b) Discuss the following generalized modeling methods. [10]

i) Random signal testing method

ii) Parameter Tracking method

c) Explain with suitable example the method of sub system coupling.[7]

SEAT No. :

./

0 a) State and explain the merits and limitations of analog simulation,methods. [5]

b) Enumerate the various digital simulation techniques. Explain any onespecific digital simulation technique for finding generalized response.[10]

c) Define convolution Integral. Explain the procedure for obtainingresponse to arbitary inputs with known impulse response. [10]

SECTION - II

Q4) a) Explain clearly any one static thermal system. How to carry out thecircuit analysis of such a system. [8]

b) Explain the following concepts. [10]

i) Thermal capacitance

ii) Thermal resistance.

c) Discuss the effect of following properties of fluids on the dynamics ofthe fluid system: [7]

i) Viscosity

ii) Temperature and

iii) Density.

Q5) a) Explain with suitable example the analogy between the mechanicalsystem and corresponding analogous electrical system. [8]

b) State the DAlemberts principle and explain with suitable example, itsapplication in system modeling and analysis. [9]

c) Explain the standard inputs used for system analysis. Discuss theimportant steps in system simulation. [8]

Q6) a) Explain the various techniques used for system modelling. [9]

b) Explain with a suitable example, any dynamic system and clearly definethe terms associated with dynamic system. [10]

c) Explain in detail the classification of models of dynamic system. [6]

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b- SPEECH PROCESSING AND APPLICATIONS (2008 Course) (Semester - I) (Elective - II) (504225)


1) Questions 5 and 10 are compulsory.2) Solve any three questions from remaining questions of each Section.3) Right side figures indicate marks.4) Assume data necessary.


SECTION - I

Q1) a) Explain speech production mechanism with its engineering analogy? [8]b) Explain the characteristic properties of speech signal? What are the

challenges for the researchers working in this area? [8]

Q2) a) What are the speech digitization techniques? [4]b) What is speech coding? [3]c) Explain any two of the speech coding technique of the following PCM/

DPCM/ADPCM/Sub band coding? [9]

Q3) a) How the speech feature extraction techniques are classified? What issignificance of speech preprocessing. [8]

b) Explain with suitable diagram Mel Frequency Cepstral coefficient(MFCC) of feature extraction? [8]

Q4) a) What is speech recognition? How it is classified? Explain in brief Stepsinvolved in speech recognition systems? [8]

b) Explain LPC technique with neat block diagram? [8]

P.T.O.

Q5) Write short note on. [18]a) Filter Bank Processing of speech signal.b) Spectrum distance measures in speech recognition.c) Auditory Measures for speech recognition.

SECTION - II

Q6) a) Explain Hidden Markov Model for speech recognition? [8]b) Explain Neural network approach in speech recognition? [8]

Q7) a) i) What is Speaker recognition?ii) How it is Classified?iii) What are the Issues in speaker recognition systems.

[10]b) What are the applications of speech recognition and speaker recognition

systems? [6]

Q8) a) Explain with block diagram text to speech conversion processes. [8]b) How will you comment on feature extraction techniques for speech and

speaker recognition? Why some of the techniques are common for both?[8]

Q9) a) Explain Dynamic Programming based speech recognition algorithm?[8]b) What are the measures of synthesized speech output performance. [8]

Q10) Write a short note on [18]a) Voice processing hardware and software?b) What is adaptive echo cancellation for speech signal?c) Explain any one speech enhancement technique.

[4660]-288 2

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[4660] - 293M.E. (E & TC) (Microwave)

a- FIBER OPTIC COMMUNICATION (2008 Pattern) (Semester - II) (Elective - III) (504231)


1) Answer any three questions from each section.2) Answers to the two sections should be written in seperate books.3) Assume suitable data if necessary.


SECTION - I

Q1) a) The refractive index and the photoelastic co-efficient for silica are 1.52and 0.287 respectively. The silica has an estimated isothermalcompressibility of 610-11 m2 per Newton at 1400 K Temperature.Boltzman constant is 1.381 10-23 Joules per Kelvin. Determine theTheoretical attenuation in desible per kilometer due to the FundamentalRayleigh scattering in silica at optical wavelength of 0.65 micro meter,1.02 micrometer and 1.28 micrometer. [8]

b) What are the different materials and dopants used for Fabrication ofglass Fiber with various refractive index. Explain the Double cruciblemethod of fiber manufacturing with neat diagram. [8]

Q2) a) What are the different types of splicing techniques? Explain differencebetween the connectors and splices. [6]

b) Explain the marking of OTDR in optical fiber communication. [6]c) Write short note on Erbium-Doped fiber amplifier. [6]

Q3) a) Explain the advantages and disadvantages of fiber optic communicationover wired communication. [6]

b) Explain signal propagation in graded index fiber with wave guide equations.[5]

c) Explain the pulse spreading and its significance in communication. [5]P.T.O.

Q4) a) An Optical link consist of multimode step index fiber with a core refractiveindex of 1.4 and relative refractive index difference of 1.1%. The lengthof fiber is 6.5km.Calculate:i) The rms pulse broadening due to intermodal dispersion on the link.

[3]ii) The Delay difference between the slowest and fastest mode at the

fiber output. [3]iii) The Bandwidth X length product. [4]

b) Explain the Fusion splicing of optical fiber with neat diagram. [6]

SECTION - II

Q5) a) Write short note on any two. [10]i) Wavelength Division multiplexing.ii) Bit Error Rate.iii) Attenuation in optical fiber.

b) Explain the working of optical receiver with neat diagram. [8]

Q6) a) Explain star coupler. Obtain 88 star coupler using 22 coupler. [8]b) Explain the concept of Tunable sources and tunable filters in OFC. [8]

Q7) a) Estimate the total insertion loss of a fiber joint with lateral misalignmentof 1.1 micrometer and angular misalignment of 1o. The parameter of thesingle mode fiber are [8]i) Numerical aperature (NA) = 0.1ii) Core diameter (2a) = 8 micrometeriii) Normalized frequency ( ) = 2.4iv) Refractive index of core (n1) = 1.46.

b) Draw optical power loss model for point to point link. Explain link powerbudget with suitable example. [8]

Q8) a) Calculate the incident optical power necessary to achieve an SNR of50dB at the receiver for the analog optical fiber system operating at wavelength of one micrometer which has a post detection bandwidth of5MHz. [8]

b) Explain SONET/SDH networks with neat diagrams. [8]

[4660]-293 2

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[4660] - 313M.E. (E & TC) (VLSI & Emb System)

b- BIOMEDICAL SIGNALS & SYSTEMS (2008 Pattern) (Elective - III) (Semester - II) (504191)


1) Answer any three questions from each section.2) Answers to the two sections must be written in separate answer sheets.3) Figures to right indicate full marks.


SECTION - I

Q1) a) Define & explain following biomedical signals & draw their nature also.[8]

i) ECG

ii) EMG

iii) EEG

iv) PCG

b) Explain the action potential & Na+-K+ pump action. [8]

Q2) a) Distinguish between ensemble & temporal (time) averages. Identifyapplication of first & second order averages of both types in EEGanalysis. [8]

b) Propose a time domain technique to remove random noise, given thepossibility of acquiring multiple realizations of the ECG signal or eventof interest. [8]

Q3) a) Explain the following in reference to cardio-vascular system. [6]

i) Heart rate variability

ii) Arrhythmia

iii) Myocardial Infraction.P.T.O.

b) Explain 10-20 electrode system for acquiring EEG signal. [10]

Q4) a) Explain the genesis of PCG signals. Also explain their correlation withECG signal. [9]

b) Explain any one technique for ECG QRS detection. [9]

Q5) a) Explain time domain technique to remove base-line drift in ECG signalusing derivative based operator. [8]

b) Explain butterworth LPF for High frequency noise removal, also explaindesign steps for the same. [8]

SECTION - II

Q6) a) Explain the operations involved in homomorphic filter & state itsapplications four any biomedical signal. [8]

b) State & explain four measures to characterize QRS complexes accordingto its morphology. [8]

Q7) a) Explain the techniques of point processes parametric system modellingwith simple example. [8]

b) State & explain the signal flow diagram of AR model with appropriateexample. [8]

Q8) a) Explain any one technique for envelop extraction & analysis of anyappropriate bio-signal activity. [8]

b) Explain the importance of Poisson random processes in bio-medicalsignal analysis. [8]

[4660]-313 2

Q9) a) Explain adaptive segmentation also explain application of adaptivesegmentation in EEG signals. [8]

b) Explain with example-Unsupervised & supervised pattern classification.[8]

Q10)Write short notes on (Any Two) [18]

a) Logistic Regression Analysis

b) Spectral Modelling & Analysis of PCG Signal

c) Application of Neural network in biomedical signal analysis.

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