Karnataka State Open University (KSOU) 2011 B.Tech Mechanical Engineering- Fluid Mechanics And Machinery - Question Paper

Mate. Marks : 75

Instruction : Answer any five questions from Part - A and Part - B.

3.    What is meant by boundary layer ? Why does it increase with distance from the upstream edge ?

4.    The convexging pipe with inlet and outlet diameters of 200 mm and 150 mm carries the oil whose specific gravity is 0.8. The velocity of oil at the entry is 2.5 m/s, find the velocity at tte~eidt df the pipe and oil flow rate in kg/ sec.

5.    Write a short note on Venturi Meter.

6.    Explain with the block diagram of Laser Doppler Anemometer.

7.    Define (i) Impulse turbine (ii) Reaction Turbine.

8.    Describe the types of pumps.

PART-B

Answer any five questions

9. Explain the classification and properties of fluids.

10. Obtain an expression for boundary layer thickness, shear stress and drag force on one side of the plate and coefficient of drag in terms of Reynolds number for the velocity profile for laminar boundary flow.

\1 F^{r a} turbulent flow in a pipe of diameter 300 mm, find.the discharge; when the g ~ cotit?e-line velocity is 2.0 m/s and the velocity at a point 100 mm from the centre as measured by pitot-tube is 16 m/s. ..............

12.    Design a Pelton wheel for a head of 80 m and speed of 300 r.p.m. The Pelton wheel develops 103 kW. Take C_v = 0.98, speed ratio = 0.45, overall' m^r efficiency = 0.80.

13.    Describe flow measurement using orifices, notches and weirs.

14.    Give an account on steam turbines.

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Attachment: karnataka-state-open-university--ksou--2011-b-tech-mechanical-engineering-34072-1.pdf

Earning:   Approval pending.