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EndsemJun 20222019 patternSE Mech

Fluid Mechanics (FM) SPPU Endsem Question Paper Jun 2022

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

Open the PDF
Pattern
2019 pattern
Exam
Endsem
Session
Jun 2022
Max. marks
70
Time
2½ Hours
Semester
IV
Paper code
[5869]-219

Printed for: S.E. (Mechanical & Automobile Engg.)

Instructions to the candidates

  1. Answer Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6, Q.7 or Q.8.
  2. Neat diagrams must be drawn wherever necessary.
  3. Figures to the right side indicate full marks.
  4. Use of electronic pocket calculator allowed.
  5. Assume suitable data if necessary.

Questions

  1. Q1

    1. a)

      Define stream function & velocity potential function.

      [4]
    2. b)

      Derive an expression for continuity equation in 3 dimensions.

      [6]
    3. c)

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

      [7]

  2. Q2

    1. a)

      Explain path line & stream line.

      [4]
    2. b)

      Discuss various types of flow with example.

      [6]
    3. c)

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

      [7]

  3. Q3

    1. a)

      State Bernoulli's theorem & the assumptions made in Bernoulli's equation.

      [4]
    2. b)

      Derive expression for the pressure drop for a steady laminar flow through circular pipe.

      [6]
    3. c)

      A 200mm × 100mm venturimeter is provided in vertical pipe carrying water flowing in horizontal direction. A differential mercury manometer connected to the inlet & throut gives a reading of 220mm. Find the velocity of fluid & rate of flow. 2

      [8]

  4. Q4

    1. a)

      Draw neat labelled sketch of shear stress & velocity distribution diagram across a section of pipe.

      [4]
    2. b)

      Derive Eulers equation for flow along stream line & deduce the Bernoulli's equation from same.

      [6]
    3. c)

      A 0.2m diameter pipe carries liquid in laminar region. A pitot tube placed in the flow at radial distance 15mm from the axis of pipe indicates velocity of 0.5 m/s. Calculate i) Maximum velocity ii) Mean velocityi ii) Discharge through pipe.

      [8]

  5. Q5

    1. a)

      Define the lift force & drag force on an object immersed in a fluid.

      [4]
    2. b)

      Explain the boundary layer separation & discuss the methods to avoid boundary layer separation.

      Also asked:May 2025

      [6]
    3. c)

      Syphon of diameter 200mm connects two reservior having difference in elevation of 15m. Total length of syphon is 600m & summit is 4m above water level in upper reservior. If separation takes place at 2.8m water absolute. Find the maximum length of syphon from upper reservior to summit. Take coefficient of friction as 0.004 & atmospheric pressure as 10.3m of water.

      [8]

  6. Q6

    1. a)

      Define & explain boundary layer thickness.

      [4]
    2. b)

      Derive Darcy - weishbach equation for calculating loss of head due to friction in pipe.

      [6]
    3. c)

      A kite has plan area of 0.25m 2 & is flying in wind of velocity 25kmph. The kite has net weight of 1.2N. When string is inclined at angle of 15º to the vertical , tension in string was found to be 3N. Evaluate coefficient of lift & drag. Take density of air as 1.5 kg/m 3 .

      [8]

  7. Q7

    1. a)

      Explain Froude's Model Law.

      [4]
    2. b)

      Define with examples : i) Reynolds Number ii) Froude's Number

      [4]
    3. c)

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

      [9]

  8. Q8

    1. a)

      Explain Reynold's Model Law

      [4]
    2. b)

      Define with examples. i) Euler's Number ii) Mach Number

      [4]
    3. c)

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

      [9]