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Max. Marks: 100

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APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Third semester B.Tech examinations (S) September 2020

Course Code: CH205
Course Name: FLUID AND PARTICLE MECHANICS-I

PARTA
Answer any two full questions, each carries 15 marks.
Explain the working of a coaxial cylinder viscometer with neat figure. State the

expression for the measurement of viscosity.
A cylinder contains fluid at a gauge pressure of 350 kN पा 2. Express this

pressure in terms of a head of (i) water (५.0 = 1000 1९ ന). (ii) mercury

(relative density 13.6). Calculate the absolute pressure in the cylinder if the
atmospheric pressure is 101 3kNm ೨.

The space between two parallel plates 5 mm apart is filled with crude oil. A force
of 2 N is required to dag the upper plate at a constant velocity of 0.8 m/s. the
lower plate is stationary. The area of the upper plate is 0.09 ന. Determine (1) the
dynamic viscosity and (2) the kinematic viscosity of the oil in stokes if the
specific gravity of the oil is 0.9.

With neat sketch, explain the working and expression to determine the pressure
difference using (i) Simple manometer (ii) Differential manometer (iii) Inclined
tube manometer.

A rigid steel container is partially filled with a liquid at 15 atm. The volume of
the liquid is 1.232 L. At a pressure of 30 atm, the volume of the liquid is 1.231 L.
Find the average bulk modulus of elasticity of the liquid over the given range of
pressure if the temperature after compression is allowed to return to its initial
value. Determine the coefficient of compressibility.

With neat sketch explain the working of continuous gravity decanter. State
expression for the performance of gravity decanter.

A solid cylinder 2 m in diameter and 2 m high is floating in water with its axis
vertical. If the specific gravity of the material of cylinder is 0.65. Find its

metacentric height. State also whether equilibrium is stable or unstable.

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Duration: 3 Hours

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