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InsemNov 20252019 patternSE Civil

Fluid Mechanics (FM) SPPU Insem Question Paper Nov 2025

All 4 questions from this SPPU insem paper, as printed. Read them here or open the PDF.

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Subject code
201003
Pattern
2019 pattern
Exam
Insem
Session
Nov 2025
Max. marks
30
Time
1 Hour
Semester
III
Paper code
[6578]-3

Printed for: S.E. (Civil) (Insem.)

Instructions to the candidates

  1. Answer Q.1 or Q.2, Q.3 or Q.4.
  2. Figures to the right indicate full marks.
  3. Neat diagrams must be drawn wherever necessary.
  4. Assume suitable data if required.
  5. Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator (nonprogrammable) and steam tables is allowed.

Questions

  1. Q1

    1. a)

      Differentiate between: i) Absolute and Gauge Pressure ii) Simple manometer and differential manometer.

      [5]
    2. b)

      State and explain Newton’s law of viscosity.

      [5]
    3. c)

      Define gauge pressure, vacuum pressure and absolute pressure.

      [5]

  2. Q2

    1. a)

      Define Specific weight, dynamic viscosity and capillarity.

      [5]
    2. b)

      Derive an expression for a pressure inside a liquid jet of radius R and surface tension.

      [5]
    3. c)

      What is meant by stability of floating and submerged body and what are the different stability conditions for floating and submerged body.

      [5]

  3. Q3

    1. a)

      Define the following and give one practical example for each : i) Laminar flow ii) Turbulent Flow iii) Steady flow iv) Uniform Flow v) Varied Flow

      [5]
    2. b)

      Write a short note on :- i) Stream line ii) Streak Line iii) Path line iv) Hydrokinetics v) Hydro kinematics

      [5]
    3. c)

      The diameter of a pipe at the section 1 and 2 are 15 cm and 20 cm respectively. Find the discharge through the pipe if velocity of water at section 1 is 4 m/s. Determine also the velocity at section 2.

      [5]

  4. Q4

    1. a)

      Explain how Bernoulli’s theorem, applied to two points in flow, is modified to account for i) Loss of head, ii) Installation of pump, iii) Non-uniform velocity variation in pipe.

      [5]
    2. b)

      Explain in brief:- i) Velocity Potential ii) Stream Function

      [5]
    3. c)

      Determine the total pressure on a circular plate of diameter 1.5 m, which is placed vertically in water in such a way that centre of plate is 2m below the free surface of water. Find the position of centre of pressure also. 

      [5]