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EndsemDec 20252019 patternSE Civil

Fluid Mechanics (FM) SPPU Endsem Question Paper Dec 2025

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
Dec 2025
Max. marks
70
Time
2½ Hours
Semester
III
Paper code
[6582]-8

Printed for: S.E. (Civil)

Instructions to the candidates

  1. Attempt Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6, Q.7 or Q.8.
  2. Answers to the all questions should be written in single answer-book.
  3. Neat diagrams must be drawn wherever necessary.
  4. Figures to the right side 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.

      [9]
    2. b)

      Explain in brief : i) Boundary layer thickness ii) Displacement thickness iii) Momentum thickness and Energy thickness

      [8]

  2. Q2

    1. a)

      What is meant by Similitude? Explain in brief : i) Dynamic similarity ii) Kinematic similarity and iii) Geometric similarity

      [9]
    2. b)

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

      [8]

  3. Q3

    1. a)

      In case of flow of viscous fluid through circular pipe, show that the ratio of maximum velocity to average velocity = 2.0.

      [9]
    2. b)

      Explain the procedure of Hardy Cross method for the analysis of pipe network.

      [8]

  4. Q4

    1. a)

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

      [9]
    2. b)

      A pipe line of 0.6 m diameter is 1.5 km long. To increase the discharge, another line of the same diameter is introduced parallel to the first in the second half of the length. Neglecting minor losses, find the increase in the discharge if 4 f = 0.04. The head at the inlet is 310mm.

      [8]

  5. Q5

    1. a)

      Derive with usual notations the basic governing “ Continuity Equation ” of channel flow.

      [9]
    2. b)

      Derive the conditions for most economical triangular channel section.

      Also asked:May 2025

      [9]

  6. Q6

    1. a)

      A trapezoidal channel has side slopes of 1 horizontal to 2 vertical and the slope of the bed is 1 in 1500. The area of the section is 41 m 2 . Find the dimensions of the section and draw the sketch of it, if it is most economical. Determine the discharge of the most economical section if C = 50.

      [9]
    2. b)

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

      [4]

  7. Q7

    1. a)

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

      [10]
    2. b)

      A jet plane which weighs 29450 N and has a wing area of 20 m 2 flies at a velocity of 250 km/hr. When the engine delivers 7358 kW, 65% of the power is used to overcome the drag resistance of the wing. Calculate the co-efficient of lift and co-efficient of drag for the wing. Take density of air equal to 1.21 kg/m 3 .

      [8]

  8. Q8

    1. a)

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

      [12]
    2. b)

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

      [3]