Civil Engineering - Hydraulics - Discussion
Discussion Forum : Hydraulics - Section 3 (Q.No. 28)
28.
Shear stress is directly proportional to
Discussion:
12 comments Page 1 of 2.
Bk prajapati said:
4 years ago
The shear stress at a point in a moving fluid is directly proportional to the rate of shear strain. For a one-dimensional flow. The constant of proportionality μ is known as the coefficient of viscosity or simply the viscosity.
Biswajit Pradhan said:
6 years ago
Directly proportional to Rate of shear strain and velocity gradient.
(1)
Abhik said:
6 years ago
It must be rate of shear strain.
(1)
Bazid shah said:
6 years ago
Well shear stress is directly proportional to shear strainand the velocity gradient.
Sadulla said:
7 years ago
It is Option C because it doesn't depend on shear stress. It may be constant for a liquid but it's a physical property of fluid. Shear stress depends on viscosity of fluid.
Goutam said:
7 years ago
Viscosity for a particular fluid is constant. So it does not vary. Shear stress changes only with the rate of shear strain. The correct Answer should be B.
Akshay said:
7 years ago
The answer is C because shear stress is directly proportional to the rate of change of shear strain and viscosity. Not the shear strain only.
Ashu said:
7 years ago
Ans is C
Shear stress = u (du/dy).
Hence the shear stress ~ viscosity.
Shear stress = u (du/dy).
Hence the shear stress ~ viscosity.
Priya said:
7 years ago
What is the correct one? please explain.
Lalit said:
8 years ago
Shear stress is directly proportional to shear strain rate. Not proportional to strain only.
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