Download VTU B-Tech/B.E 2019 June-July 1st And 2nd Semester 2015 Jan 2014 Dec 14ELN15 Basic Electronics Question Paper

Code: 20A03301

B.Tech II Year I Semester (R20) Regular Examinations November 2021

FLUID MECHANICS

(Civil Engineering)

Time: 3 Hours                                                                                                               Max. Marks: 70

Note: 1. Question paper consists of two parts A and B.

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              2. Part A is compulsory, answer any four questions from Part B.

PART-A

(14 Marks)

1. 1. Define specific weight and specific volume.
   2. State Pascal’s law.
   3. What is a flow net?

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   4. Define displacement thickness.
   5. What are the minor losses in pipes?
   6. Define hydraulic gradient line.
   7. What is dimensional homogeneity?

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PART-B

(56 Marks)

2. Explain the classification of fluids.

3. A rectangular plane surface 2m wide and 3m deep lies in water in such a way that its plane makes an angle of 30° with the free surface of the water. Determine the total pressure and position of center of pressure when the upper edge is 1.5m below the free water surface.

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4. Explain the different types of fluid flow.

5. Determine the velocity at a point (2, 1, 1) in a fluid field given by V = (6xy + t²)i + (3yz + t)j + (xy - t²z)k. Also, find the magnitude of the velocity at t=2 sec.

6. Derive the expression for the momentum equation.

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7. Determine the pressure gradient along the flow, when oil of viscosity 0.05 poise is flowing through a pipe of diameter 20cm at a rate of 0.06 m³/s.

8. Explain the Reynolds experiment.

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9. Two reservoirs with a difference in water surface elevation of 15m are connected by a pipe line 750mm diameter and 3000m long. Find the discharge.

10. Explain the different types of similarities.

11. What are the advantages of dimensional analysis?

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