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InsemMar 20242019 patternSE Mech

Fluid Mechanics (FM) SPPU Insem Question Paper Mar 2024

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

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Subject code
202049
Pattern
2019 pattern
Exam
Insem
Session
Mar 2024
Max. marks
30
Time
1 Hour
Semester
IV
Paper code
[6268]-264

Printed for: S.E. (AUTOMOBILE & Mechanical) (Insem)

Instructions to the candidates

  1. Answer Q.1 or Q.2, Q.3 or Q.4.
  2. Neat diagrams must be drawn wherever necessary.
  3. Figures to the right indicate full marks.
  4. Assume suitable data, if necessary.

Questions

  1. Q1

    1. a)

      Define the following properties of fluid with SI units, i) Specific Gravity ii) Kinematic Viscosity iii) Specific Weight iv) Specific Volume

      [8]
    2. b)

      The dynamic viscosity of an oil, used for lubrication between a shaft and sleeve is 6 poise. The shaft is of diameter 0.4m and rotates at 190 r.p.m. Calculate the power lost in the bearing for a sleeve length of 90 mm. The thickness of the oil film is 1.5 mm. 2

      [7]

  2. Q2

    1. a)

      Explain the phenomenon of capillarity. Obtain an expression for capillary rise of a liquid.

      [7]
    2. b)

      Explain in brief: i) Surface tension ii) Vapour pressure iii) Compressibility

      [8]

  3. Q3

    1. a)

      State and prove Hydrostatics law

      [7]
    2. b)

      A differential manometer is connected at the two points A and B of two pipes as shown in below figure. The pipe A contains a liquid of specific gravity = 1.5 while pipe B contains a liquid of specific gravity = 0.9. The pressure at A and B are 1 kgf/cm 2 and 1.80 kgf/cm 2 respectively. Find the difference in mercury level in the differential manometer. (1kgf = 9.81 N) 3

      [8]

  4. Q4

    1. a)

      Show that the distance between the meta-centre and centre of buoyancy is given by. BM    Where,  = Moment of inertia of the plan of the floating body at water surface about longitudinal axis.  = Volume of the body sub merged in liquid.

      [7]
    2. b)

      Determine the total pressure and centre of pressure on an isosceles triangular plate of base 4 m altitude 4m when it is immersed vertically in an oil specific gravity 0.9. The base of the plate coincides with the free surface of oil. … … …

      [8]