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EndsemMay 20242019 patternSE Civil

Fluid Mechanics (FM) SPPU Endsem Question Paper May 2024

All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.

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Subject code
201003
Pattern
2019 pattern
Exam
Endsem
Session
May 2024
Max. marks
70
Time
2½ Hours
Semester
III
Paper code
[6261]-8

Printed for: S.E. (Civil)

Instructions to the candidates

  1. Answer Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6 and Q.7 or Q.8.
  2. Answers to the all questions should be written in single answer - book.
  3. Neat diagram must be drawn wherever necessary.
  4. Figures to the right indicate full marks.
  5. Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator (non programmable) and steam tables is allowed.
  6. Assume suitable data, if necessary.

Questions

  1. Q1

    1. a)

      This part has equations that don’t show as text. Open the PDF to read it.

      [8]
    2. b)

      Explain following similarities as applicable to model studies: i) kinematic similarity ii) dynamic similarity

      [4]
    3. c)

      This part has equations that don’t show as text. Open the PDF to read it.

      [6]

  2. Q2

    1. a)

      The velocity and discharge for a 1 40 scale model of a spillway are 0.45m/ sec and 0.102 m3/sec, respectively. Calculate corresponding velocity and discharge in the prototype.

      [6]
    2. b)

      Explain the growth of boundary layer over a thin flat plate held parallel to the direction of flow in a real fluid.

      [6]
    3. c)

      Derive an expression for displacement thickness. 2

      [6]

  3. Q3

    1. a)

      Explain in brief Moody ’ s diagram.

      [7]
    2. b)

      The difference of water levels of two reservoirs is 8m They are connected by a 40 m long pipe. For the first 25m length, the diameter of the pipe is 120 mm and for the remaining length, the diameter is 200 mm, the change in diameter being sudden. Calculate the discharge into the reservoir. Also calculate head loss in individual pipe Take Darcy - Weisbach friction factor f = 0.032. Neglect minor losses.

      [8]
    3. c)

      Draw typical velocity distribution diagrams for fully developed laminar and turbulent flow through pipe. Also state the nature of velocity profile for each.

      [2]

  4. Q4

    1. a)

      Explain in brief all types of minor losses in pipe.

      [6]
    2. b)

      Prove that for steady uniform laminar flow through circular pipe, the velocity distribution diagram is parabolic.

      [9]
    3. c)

      Calculate the value of Darcy Weisbach friction factor if Reynold ’ s Number for flow through pipe is 100.

      [2]

  5. Q5

    1. a)

      Explain specific energy curve.

      Also asked:May 2025

      [5]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [8]
    3. c)

      This part has equations that don’t show as text. Open the PDF to read it.

      [5]

  6. Q6

    1. a)

      Derive Chezy ’ s formula for uniform flow through open channel.

      [8]
    2. b)

      Write five characteristics of critical flow in open channel.

      [5]
    3. c)

      Water flows at the rate of 16m 3 /sec in a rectangular channel 10 m wide at a velocity of 1.6m/s. calculate i) specific energy head, ii) Froude Number and state the type of flow.

      [5]

  7. Q7

    1. a)

      Derive dynamic equation of GVF.

      [9]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [8]

  8. Q8

    1. a)

      This part has equations that don’t show as text. Open the PDF to read it.

      [10]
    2. b)

      Differentiate between stream lined and bluff body with suitable sketches.

      [4]
    3. c)

      Draw a neat figure showing variation of drag coefficient (C D ) with Reynold ’ s Number (R e ) for flow around a sphere of real fluid. Show appropriate vales of C D and Re. … … …

      [3]