Streamline, and Turbulent Flow, Stoke's Law NEET Questions

Physics - Properties of Solids and Liquids

Streamline, and Turbulent Flow, Stoke's Law MCQ Questions


1.
The study of fluids in motion is known as:
A.
Rheology
B.
Hydrostatics
C.
Fluid statics
D.
Fluid dynamics
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ANSWER :
D. Fluid dynamics
2.
In studying the motion of fluids, we focus our attention on what is happening to various fluid particles at a particular point in space at a particular time. This approach is called the:
A.
Eulerian approach — tracking velocity field at fixed points in space
B.
Lagrangian approach
C.
Bernoulli approach
D.
Viscous approach
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ANSWER :
A. Eulerian approach — tracking velocity field at fixed points in space
3.
The flow of a fluid is said to be steady (streamline) if at any given point:
A.
The velocity of each passing fluid particle remains constant in time at that point
B.
The density of the fluid changes continuously with time
C.
The pressure is zero everywhere
D.
The velocity of all fluid particles is identical everywhere
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ANSWER :
A. The velocity of each passing fluid particle remains constant in time at that point
4.
In steady flow, a particle arriving at a given point P may have a different velocity from a particle at another point Q. However, all particles passing through P have:
A.
Different velocities from each other
B.
Zero velocity
C.
Random velocities
D.
The same velocity — because velocity at P is constant in time
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ANSWER :
D. The same velocity — because velocity at P is constant in time
5.
The velocity of a particular fluid particle may change as it moves from one point to another in a steady flow. This change in velocity represents:
A.
Viscous dissipation
B.
Unsteady flow
C.
Turbulent flow
D.
The particle accelerating/decelerating as it moves between regions of different speed (spatial velocity variation)
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ANSWER :
D. The particle accelerating/decelerating as it moves between regions of different speed (spatial velocity variation)
6.
A streamline is defined as:
A.
A line connecting points of equal density
B.
A curve whose tangent at any point is in the direction of the fluid velocity at that point in steady flow
C.
A line connecting points of equal pressure
D.
The path traced by any fluid particle at any instant
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ANSWER :
B. A curve whose tangent at any point is in the direction of the fluid velocity at that point in steady flow