 MORE IN Applied Hydraulics - 2
MU Civil Engineering (Semester 6)
Applied Hydraulics - 2
December 2014
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

1 (a) Explain terminal velocity of a body with example.
5 M
1 (b) Explain Boundary Layer separation.
5 M
1 (c) Differentiate between uniform & non uniform flow, steady & unsteady flow.
5 M
1 (d) Derive the condition for maximum discharge for a given value of specific energy.
5 M

2 (a) A sewer is to be laid a slope of 1 in 8100 to carry a maximum discharge of 600 liters/sec, when depth of water is 75% of the vertical diameter. Find the diameter of the pipe. Take Manning N is 0.025.
10 M
2 (b) Derive the condition for most economical trapezoidal channel including best side slope.
10 M

3 (a) What is drag? What causes it? Why do we usually try to minimize it.
10 M
3 (b) Classify the surface profiles in gradually varied flow with neat sketches.
10 M

4 (a) Derive the Von-Karman momentum integral equation for boundary layer flows.
10 M
4 (b) Find the displacement thickness, the momentum thickness and energy thickness for the velocity distribution in the boundary layer given by
u/U=2(y/δ)-(y/δ)2
10 M

5 (a) Determine the length of the back water curve caused by an afflux of 2.0 meter in a rectangular channel of width 40 meter and depth 2.5 meter. The slope of the bed is given as 1 in 11000. Take Manning's N=0.03.
10 M
5 (b) A kite 0.8 m × 0.8 m weighing 4.0 N assumes an angle of 12° to the horizontal. The string attached to the kite makes an angle of 45° to the horizontal. The pull on the string is 25N, when the wind is flowing at a speed of 30 km/hr. Find the corresponding co-efficient of drag and lift. Density of air is given as 1.25kg/m3.
10 M

6 (a) Compare kennedy's and Lacey's slit theories. Why Lacey's conception superior to that of Kennedy's.
10 M
6 (b) Design an irrigation canal to carry a discharge of 14 cumes. Assume N=0.0225, m=1 and B/D=5.7.
10 M

7 (a) Derive the expression for loss of energy due to Hydraulic jump.
10 M
7 (b) Write a short note on
i) Specific Energy and specific curve.
ii) Development of lift on a Airfoil.
10 M

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