Q1/ A 120 mm disc rotates on a table separated by an oil film of 1.8 mm thickness.Find the viscosity of oil if the torque required to rotate the disc at 60 r.p.m is3.6 x 10 N.m. Assume the velocity gradient in the oil film to be linear =0.0506 poise.N-60 r.p.m.Dise18 mmR-Oil film(1= dy)120 mmTableFigure (1)Q2/The pressure in a natural gas pipeline is measured by a double U-tube manometer with oneof the arms open to the atmosphere. The absolute pressure in the pipeline is to bedetermined if h-0.7 m, h-0.4 m, and h- 1.0 m. Take the densities of water, oil, andmercury to be 1000 kg/m', 840 kg/m', and 13,600 kg/m', respectively.WaterNaturalNrcury(1-1)

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Q1/ A 120 mm disc rotates on a table separated by an oil film of 1.8 mm thickness. Find the viscosity of oil if the torque required to rotate the disc at 60 r.p.m is 3.6 x 10 N.m. Assume the velocity gradient in the oil film to be linear = 0.0506 poise. N-60 r.p.m.

Q1/ A 120 mm disc rotates on a table separated by an oil film of 1.8 mm thickness. Find the viscosity of oil if the torque required to rotate the disc at 60 r.p.m is 3.6 x 10 N.m. Assume the velocity gradient in the oil film to be linear = 0.0506 poise. N-60 r.p.m.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Concept explainers

Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.

Question

Q1/ A 120 mm disc rotates on a table separated by an oil film of 1.8 mm thickness.
Find the viscosity of oil if the torque required to rotate the disc at 60 r.p.m is
3.6 x 10 N.m. Assume the velocity gradient in the oil film to be linear =
0.0506 poise.
N-60 r.p.m.
Dise
18 mm
R-
Oil film
(1= dy)
120 mm
Table
Figure (1)
Q2/
The pressure in a natural gas pipeline is measured by a double U-tube manometer with one
of the arms open to the atmosphere. The absolute pressure in the pipeline is to be
determined if h-0.7 m, h-0.4 m, and h- 1.0 m. Take the densities of water, oil, and
mercury to be 1000 kg/m', 840 kg/m', and 13,600 kg/m', respectively.
Water
Natural
Nrcury
(1-1)

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