Fluid Mechanics and Hydraulic Machines (3141906) MCQs

MCQs of Motion of Fluid Particles and Streams

Showing 1 to 10 out of 42 Questions
1 2 3 4 5
1.
Continuity equation deals with the law of conservation of
(a) mass
(b) momentum
(c) energy
(d) none of the above
Answer:

Option (a)

2.
In a free vortex motion, the radial component of velocity everywhere is
(a) maximum
(b) minimum
(c) zero
(d) non-zero and finite
Answer:

Option (c)

3.
The flow of water through the hole in the bottom of a washbasin is an example of
(a) steady flow
(b) uniform flow
(c) free vortex
(d) forced vortex
Answer:

Option (c)

4.
Which of the following is an example of laminar flow?
(a) Underground flow
(b) Flow past tiny bodies
(c) The flow of oil in measuring instruments
(d) all of these
Answer:

Option (d)

5.
When a cylindrical vessel, containing some liquid, is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as
(a) steady flow
(b) turbulent flow
(c) vortex flow
(d) uniform flow
Answer:

Option (c)

6.
Flow-through a long pipe at a constant rate is called
(a) steady uniform flow
(b) steady non-uniform flow
(c) unsteady uniform flow
(d) unsteady non-uniform flow
Answer:

Option (a)

7.
Which of the following statement is correct?
(a) In a compressible flow, the volume of the flowing liquid changes during the flow.
(b) A flow in which the volume of the flowing liquid does not change is called incompressible flow.
(c) When the particles rotate about their own axes while flowing, the flow is said to be rotational flow.
(d) all of the above
Answer:

Option (d)

8.
The flow in a pipe is neither laminar nor turbulent when Reynold number is
(a) less than 2000
(b) between 2000 and 4000
(c) more than 4000
(d) none of these
Answer:

Option (b)

9.
The flow in a pipe is turbulent when Reynold number is
(a) less than 2000
(b) between 2000 and 4000
(c) more than 4000
(d) none of these
Answer:

Option (c)

10.
When a cylindrical vessel containing liquid is revolved, the surface of the liquid takes the shape of
(a) a triangle
(b) a paraboloid
(c) an ellipse
(d) none of these
Answer:

Option (b)

Showing 1 to 10 out of 42 Questions
1 2 3 4 5