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11050 Pages:

water. The side slope is 45°. Take bed slope is 1 in 1000 and Chezy’s constant as
50.

Derive the condition for maximum discharge for a given value of specific energy.
In a hydraulic jump on a horizontal rectangular channel the Froude number
before the jump is 10 and energy loss during the jump is 4 m. Find i) depths
before and after the jump, ii) the discharge per unit width and iii) Froude no after
the jump.

Define the terms: i) conveyance of a channel section ii) normal depth.

A rectangular channel has a width of 1.8 m and carries a discharge of 1.8 m/s at
a depth of 0.2 m. Calculate i) specific energy ii) depth alternate to the existing
depth and iii) Froude numbers at the alternate depths.

PART C
Answer any two full questions, each carries 20 marks.
Derive the dynamic equation for gradually varied flow, stating the assumptions
involved.
A trapezoidal channel with 6 m bottom width and side slope 2 horizontal to 1

vertical having a bed slope of 0.0016 carries 10 m*/s of water. The dam along the
way of the channel rises the water depth by 2 m behind the dam. Decide the
nature of channel and type of profile of water. Take Manning’s coefficient as
0.025

The resistance force F of a ship is a function of length L, velocity V, gravitational
acceleration ஐ, density ‏م‎ and viscosity பூ, Develop a functional relationship in
terms of non-dimensional numbers using Buckingham z theorem.

Explain the different types of similarities to be ensured between the model and
prototype.

Explain the Froude model law.

Find the slope of free water surface of a rectangular stream 20 m wide at a
section 3 m deep. The slope of the bed of stream is 1 in 5000. Total discharge is
25 173/6. Assume Chezy’s constant © as 55. State whether water surface will fall
or rise.

A 1:5 scale model of a car is tested in wind tunnel. The velocity of prototype is
75 km/h. The model drag is 300 N. Find out the drag and power required for the
prototype. The air used is same in model and prototype.

Differentiate between backwater curve and drawdown curve.

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