Part - A (Answer ALL questions.) 20 x 2 = 40 Marks

- Define Newtonian fluid.
- What is "vapour pressure".
- Define kinematic viscosity.
- Write the unit of power in M.L.T. system.
- Define 'stream tube'.
- What is 'form drag'?
- State the use of Reynolds number in fluid flow.
- Indicate a possible velocity profile in "Turbulent flow".
- Define the term 'Mach number'.
- State Euler's equation for ideal fluid flow.
- Why the length of divergent section of a venturimeter is much longer than its convergent section.
- Define the term "Coefficient of Contraction".
- Write the expression for discharge through a V-notch with an included angle of q
- What are the types of Hot-wire anemometer used in practice?
- Suggest a flow meter for measuring slurry flow in a closed pipeline.
- Define the term "Fluidization".
- Name any two types of positive displacement pump.
- Name any three applications for continuous fluidization.
- Define the term "shut off head" of a centrifugal pump.
- Which fan produce a high static pressure rise, a backward curved fan or a forward curved fan.
- (a) (i) Derive an expression for capillary rise of water in a small tube. (5)
- (a) (i) Explain the concept velocity potential and stream function.(4)
- (a) Derive an expression for coefficient of discharge of a venturimeter.
- (a) Describe the methods of estimating pressure drop through a packed bed.
- (a) Describe the working principle of any one type rotary pump with a neat sketch.

Part - B

(ii) Water has a surface tension of 0.4 N/m. In a 3 mm diameter vertical tube if the liquid rises 6 mm above the liquid outside the tube, calculate the contact angle. (7)

Or

(b) (i) Define Geometric and Kinematic similarity. (4)

(ii) A U - tube differential mercury manometer is connected between two pipes X and Y. Pipe X contains carbon tetra chloride (Sp.gr. 1.59) under a pressure of 103 kN/m^{2} and pipe Y contains oil (Sp.gr. 0.8) under a pressure of 172 kN/m^{2}. Pipe X is 2.5 m above pipe Y. Mercury level in the limb connected to pipe X is 1.5 m below the centerline of pipe Y. Find the manometer reading as shown by a centimeter scale attached to it. (8)

(ii) Water flows through a horizontal conical pipe. The diameter at larger end is 1.3 m and that at smaller end is 0.7 m. The pressure head at the smaller end is 5 m of water and discharge is 3.5 m^{3}/sec. Calculate the velocities at the two ends and pressure head at larger end. (8)

Or

(b) (i) Explain the method of reducing skin friction drag. (4)

(ii) A medium lubricating oil of sp.gr. 0.86 is pumped through 300 m horizontal pipe of diameter 50 mm at a rate of 1.24 lit/sec. If the pressure drop is 0.2 MPa find the absolute viscosity of oil. (8)

Or

(b) With a neat sketch explain the working principle of a Hot-film anemometer.

Or

(b) Describe the general properties of fluidized bed.

Or

(b) (i) Explain the various performance curves of a centrifugal pump.

(ii) Briefly explain the method of selecting a pump for a given application.