138

130

14%

140

158

150

168

160

17a

17b

0860 0001

Module 2

With a neat sketch, derive continuity equation in 3D.

Flow field of a fluid is given by V = xy’ i+ yz? j + (2x°yz + yz) k. Calculate
the velocity and the acceleration at the point (4,3,2).

Explain the minor energy losses in pipes.

The diameter of the pipe in a pipe line is suddenly reduced to a lower diameter
from 600 mm to 300 mm. If the pressure intensities at larger and smaller pipe
sections are 16.7 N/cm’ and 14.6 N/cm? respectively, find the loss of head due to

contraction (Cc = 0.62). Also determine the discharge through this pipe section.

Module 3

Derive expression for discharge through a triangular notch.

Discharge through an orifice provided in an overhead tank is 100 litres/second.
The diameter of the orifice is 130 mm. The constant head maintained in the tank
is 10 m. A point on the jet profile, measured from the vena contracta has co-
ordinates 5 m horizontal and 0.6 m vertical. Find the hydraulic coefficients of

the orifice.

Give an overview on constructional details of a Venturimeter. Also illustrate

steps to derive discharge through a Venturimeter.

With neat sketches, illustrate the various arrangements of Pitot tube and Pitot-

static tube for measuring velocity of flow in pipelines.

Module 4

Draw velocity triangles for a moving unsymmetrical curved plate due to impact

of jet. Derive an expression for work done per second by the jet.

The mean bucket diameter of a Pelton wheel is 1.5 m. It is running at 1200 rpm.
The net head on the Pelton wheel is 750 m. The side clearance angle is 20° and
discharge through the nozzle is 0.15 m/s. Find the power available at the

nozzle and the hydraulic efficiency of the turbine.

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