Define density, specific weight and specific gravity.
[3 marks]Explain Buoyancy and Centre of Buoyancy.
[4 marks]07 The velocity distribution for flow over a flat plate is given by u = in which u is the velocity in meter per second at a distance y meter above the plate. Determine the shear stress at y =0.15 m. Take dynamic viscosity of fluid as 8.6 poise.
[ marks]Define the terms: (1) Velocity potential function and (2) Stream function.
[3 marks]Explain the term velocity of approach. Find an expression for the discharge over a rectangular weir with velocity of approach.
[4 marks]Describe Buckingham’s π theorem. How are the repeating variables selected for dimensional analysis?
[7 marks]The efficiency η of a fan depends on the density ρ, dynamic viscosity µ, the angular velocity ω, Diameter Dof the rotor and the discharge Q. Express η in terms of dimensionless parameters.
[7 marks]Classify different types of orifices according to its size, shapes and discharge.
[3 marks]What is pitot-tube? How the velocity at any point is determined with the help of pitot-tube.
[4 marks]Derive an expression for the discharge through triangular notch.
[7 marks]Define coefficient of contraction, coefficient of velocity and coefficient of discharge for the orifice.
[3 marks]Write down the advantages of triangular notch over a rectangular notch.
[4 marks]What is venturimeter. Derive an expression for the discharge through a venturimeter. Page 1 of
[2 marks]Define: (i) Total energy line (ii) Hydraulic gradient line
[3 marks]Derive an expression for loss of head due to sudden enlargement of a pipe.
[4 marks]Derive an expression for the loss of head due to friction in pipes.
[7 marks]Describe major energy losses and minor energy losses in pipe.
[3 marks]Explain the phenomenon of water hammer.
[4 marks]Derive the Hagen-Poiseuille equation for laminar flow in the circular pipe.
[7 marks]Explain the terms (1) Rapidly varied flow and (2) Gradually varied flow.
[3 marks]Arectangular channel of width 4.5 m is having a bed slope of 1 in 1500. Find the maximum discharge through the channel. Take value of C = 50
[4 marks]Derive the geometrical conditions for the most economical section of a trapezoidal channel.
[7 marks]Differentiate between: (1) Uniform flow and non-uniform flow (2) Steady and unsteady flow.
[3 marks]Find the velocity of flow and rate of flow of water through a rectangular channel of 6.5 m wide and 3 m deep, when it is running full. The channel is having bed slope as 1 in 2000. Take Chezy's constant C = 55.
[4 marks]Draw specific energy curve and than derive expressions for critical depth and critical velocity. Page 2 of
[2 marks]