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00000CE203121901

Pages: 2

Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Third semester B.Tech examinations (S) September 2020

Course Code: CE203
Course Name: FLUID MECHANICS - I
PARTA
Answer any two full questions, each carries 15 marks.
A U-tube differential gauge is attached to the two sections A and B in a
horizontal pipe in which oil of specific gravity 0.8 is flowing. The deflection of
the mercury in the gauge is 60 cm, the level nearer to A being the lower one.
Calculate the difference in pressure between sections A and B.
Explain convective and local acceleration.
What is a flow net? What are its uses?
How is the metacentric height of a body determined experimentally?
A solid cylinder of diameter 5 m has a height of 5 m. Find the metacentric
height of the cylinder if the specific gravity of the material of the cylinder is 0.7
and it is floating in water with its axis vertical. State whether the equilibrium is
stable or unstable.
The velocity vector in a fluid flow is given V = 43} — 1079 | + 21 k. Find the
velocity and acceleration of a fluid particle at (2, 1, 3) at time t= 1.
Describe velocity potential function and stream function.
PART ‏تا‎
‎Answer any two full questions, each carries 15 marks.
A pipe line carrying oil of specific gravity 0.8, changes in diameter from 300
mm at a position A to 500 mm diameter at a position B, which is 5m at a higher
level. If the pressure at A and ए are 19.62 N/cm? and 14.91 N/cm? respectively
and the discharge is 150 litres/sec, determine the loss of head and direction of
flow.
A bend in a pipeline conveying water gradually reduces from 0.6 m to 0.3 m
diameter and deflects the flow through an angle of 60°. At the larger end the
gauge pressure is 171.675 kN/m/. Determine the magnitude and direction of the
force exerted on the bend when the flow is 876 litres/s.

A venturimeter is used for measuring the flow of petrol in a pipeline inclined at

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Duration: 3 Hours

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