STUPIDSID
1(a)
What do you understand by Aging of pipes? Also explain laminar sub layer.
2 M
1(b)
What is Siphon and where is it used?
2 M
1(c)
What is you understand by the term "Water Hammer" in pipes? Explain.
3 M
Solve any one question from Q.1(d) & Q.1(e)
1(d)
For the distribution main of a city water supply a 36cm diameter pipe is required of a city water supply a 36cm diameter pipe required. As pipe above 30cm are not available,, it is decided to lay two parallel pipes of the same diameter. Assuming the friction factor of all the pipes to be same, determine the diameter of the parallel mains.
7 M
1(e)
Calculate the discharge in each pipe of the network as shown in figure. The pipe network consists of 5 pipes. The head loss in a pipe is given by hh=rQ2. The values of 'r' for various pipes and also the inflow or outflow at nodes are shown in figure.
7 M
2(a)
What is Critical Flow? Also show its relation to Froude number.
2 M
2(b)
What is Specific Energy? Show its importance to open channel flow.
2 M
2(c)
Differentiate open channel flow to a pipe flow.
3 M
Solve any one question from Q.2(d) & Q.2(e)
2(d)
Obtain an expression for the condition for most efficient trapezoidal channel section.
7 M
2(e)
A Triangular Channel has a side slope of 1.5(H): 1(V) and is laid on a longitudinal slope of l in 1650.Assuming Manning's 'N' is 0.013, estimate the normal depth required to pass a discharge of .030m3/s.
7 M
3(a)
What is Venturi Flume? Explain with neat sketch.
2 M
3(b)
Define rapidly varied flow and gradually varied flow.
2 M
3(c)
Explain the phenomena of formation of Hydraulic Jump.
3 M
Solve any one question from Q.3(d) & Q.3(e)
3(d)
Uniform flow occurs at a depth of 1.5m in a long rectangular channel 3 m wide and laid to a slope of 0.0009. If manning's N=0.015, calculate maximum height of hump on the floor to produce critical depth.
7 M
3(e)
Define :
i) Froude Number and its importance
ii) Hydraulic depth Hydraulic Radius
i) Froude Number and its importance
ii) Hydraulic depth Hydraulic Radius
7 M
4(a)
What is Profile Drag and lift?
2 M
4(b)
What is Magnus effect? Explain clearly.
2 M
4(c)
Derive an expression for lift coefficients for rotating cylinder.
3 M
Solve any one question from Q.4(d) & Q.4(e)
4(d)
If the power to overcome aerodynamic drag of an aircraft remains the same, what percentage n the velocity
7 M
4(e)
A kite in the form of a rectangular airfoil with a chord length of 60cm and a width 45cm and weights 0.8 N it is maintained at an angle of 20 degree to the horizontal and the string makes and angle of 30 degree to the vertical If the wind speed is 15 km/hr (horizontal flow) and cd is 0.25. Estimate the tension in the string and the coefficient for lift. Take density for air is 1.2 kg/m3.
7 M
5(a)
What are different characteristics curves for a Turbine? Explain.
2 M
5(b)
What is priming of a pump?
2 M
5(c)
What is governing mechanism of Turbine? Explain.
3 M
Solve any one question from Q.5(d) & Q.5(e)
5(d)
Draw inlet and outlet Velocity triangle for inward flow reaction turbine and for a Centrifugal pump.
7 M
5(e)
An Inward Flow Reaction Turbine has an inlet guide vane angle of 30 degree and inlet edges of runner blade at 120 degree to the direction of rotation. The breadth of the runner at inlet is a quarter of the diameter and there is no whirl velocity at outlet. The overall head is 20 m and the speed is 1200rpm. The Hydraulic and overall efficiency may be assumed to be 89% and 85% respectively. Estimate the runner diameter at inlet and power developed.
7 M
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