STUPIDSID
1 (a)
Explain terminal velocity of a body with example.
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1 (b)
Explain Boundary Layer separation.
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1 (c)
Differentiate between uniform & non uniform flow, steady & unsteady flow.
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1 (d)
Derive the condition for maximum discharge for a given value of specific energy.
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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.
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2 (b)
Derive the condition for most economical trapezoidal channel including best side slope.
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3 (a)
What is drag? What causes it? Why do we usually try to minimize it.
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3 (b)
Classify the surface profiles in gradually varied flow with neat sketches.
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4 (a)
Derive the Von-Karman momentum integral equation for boundary layer flows.
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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
u/U=2(y/δ)-(y/δ)2
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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.
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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.
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6 (a)
Compare kennedy's and Lacey's slit theories. Why Lacey's conception superior to that of Kennedy's.
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6 (b)
Design an irrigation canal to carry a discharge of 14 cumes. Assume N=0.0225, m=1 and B/D=5.7.
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7 (a)
Derive the expression for loss of energy due to Hydraulic jump.
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7 (b)
Write a short note on
i) Specific Energy and specific curve.
ii) Development of lift on a Airfoil.
i) Specific Energy and specific curve.
ii) Development of lift on a Airfoil.
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