A trapezoidal channel with a sideslope of 1V:2H and a bottom width of 10 ft carries a discharge of 300 ft3/s. (a) Plot the specific energy curve (NOTE: it has to be neat and to scaleA), (b) At what depth will the critical flow occur?, (c) Determine the alternate depth to a 4 ft depth of flow, (d) What is the state of flow at the alternate depth?

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa.s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)