Essay about Chemical Engg. Fluid Mechanics MCQ's

2851 Words Oct 25th, 2013 12 Pages
Id

Question
The fluid property, due to which, mercury does not wet the glass is
A
surface tension
B
viscosity
C
cohesion
D
adhesion
Answer
A
Marks
1
Unit
A1

Id

Question
The dimension of dynamic viscosity is
A
ML-1T-1
B
L2T-1
C
LT-2
D
ML-1T-2
Answer
A
Marks
2
Unit
A1

Id

Question
The fluid, in which the shearing stress within it is proportional to the velocity gradient across the sheared section, is called a __________ fluid.
A
Bingham
B
Newtonian
C
perfect
D
none of these
Answer
C
Marks
1
Unit
A1

Id

Question
Pick out the wrong statement.
A
The shear stress at the pipe (diameter = D, length = L) wall in case of laminar flow of Newtonian fluids is
B
In the equation, the
…show more content…
A exponentially B linearly C logarithmically D none of these
Answer
C
Marks
1
Unit
A1

Id

Question
A fluid is the one, which
A
cannot remain at rest under the action of shear force.
B
continuously expands till it fills any container.
C
is incompressible.
D
permanently resists distortion.
Answer
A
Marks
1
Unit
A1

Id

Question
Which of the following properties of a fluid is responsible for offering resistance to shear ?
A
Surface tension.
B
Viscosity.
C
Specific gravity.
D
All (a), (b), and (c).
Answer
B
Marks
1
Unit
A1

Id

Question
In an incompressible flow of fluid, the fluid
A
temperature remains constant.
B
compressibility is greater than zero.
C
density does not change with pressure &temperature.
D
is frictionless.
Answer
C
Marks
1
Unit
a1

Id

Question
A fluid is one which
A
Cannot remain at rest under the action of shear force
B
Continuously expands till it fills any container
C
Is incompressible
D
Permanently resists distortion
Answer
A
Marks
1
Unit
A1

Id

Question
In an incompressible fluid, density
A
is greatly affected by moderate changes in pressure
B
is greatly affected only by moderate changes in temperature
C
Remains unaffected with moderate change in temperature and preesure
D
Is sensible to changes in both temperature and pressure
Answer
A
Marks
1
Unit
A1

Id

Question
A fluid is a substance

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