Explore topic-wise MCQs in Fluid Mechanics.

This section includes 59 Mcqs, each offering curated multiple-choice questions to sharpen your Fluid Mechanics knowledge and support exam preparation. Choose a topic below to get started.

51.

Animal cell cultures do not have much effect on shear forces because

A. the cell size is generally smaller than the critical eddy size at which shear will have an effect
B. cells are larger than the critical eddy size at which shear will have an effect
C. animal cells have cell walls
D. animal cells have cell membranes
Answer» B. cells are larger than the critical eddy size at which shear will have an effect
Discussion
52.

Pluronic F68 is added to cell culture media as

A. a nutrient
B. a shear protectorant
C. to increase oxygen transfer rates
D. all of these
Answer» C. to increase oxygen transfer rates
Discussion
53.

A Newtonian fluid is one in which the viscosity

A. is constant regardless of the stirrer speed or mixing time
B. changes during mixing but returns to its original state after mixing
C. increases with increasing stirrer speed
D. decreases with increasing stirrer speed
Answer» B. changes during mixing but returns to its original state after mixing
Discussion
54.

Three flows named as 1,2 and 3 are observed. The Reynold’s number for the three are 100, 1000 and 10000. Which of the flows will be laminar?$#

A. only 1
B. only 1 and 2
C. 1, 2 and 3
D. only 3
Answer» C. 1, 2 and 3
Discussion
55.

“The_velocity_of_entrance_and_exit_through_a_nozzle_remains_the_same.”_Is_this_ever_possible?$#

A. only if the flow is compressible
B. only if the flow is laminar
C. only if the flow is rotational
D. never possible
Answer» B. only if the flow is laminar
Discussion
56.

Which of the following statements is true regarding one and two-dimensional flows?

A. Flow in a pipe is always taken as one-dimensional flow
B. Flow in a pipe is always taken as two-dimensional flow
C. Flow in a pipe is taken as one-dimensional flow when average flow parameters are considered
D. Flow in a pipe is taken as two-dimensional flow when average flow parameters are considered
Answer» D. Flow in a pipe is taken as two-dimensional flow when average flow parameters are considered
Discussion
57.

Can the flow inside a nozzle be steady and uniform?

A. yes
B. never
C. it can be steady but never uniform
D. it can be uniform but never steady
Answer» D. it can be uniform but never steady
Discussion
58.

What type of flow can be taken for granted in a pipe of a uniform cross-section?

A. steady
B. unsteady
C. uniform
D. non-uniform
Answer» D. non-uniform
Discussion
59.

Which method is used exclusively in fluid mechanics?

A. Lagrangian method
B. Eulerian method
C. Both Lagrangian and Eulerian methods
D. Neither Lagrangian nor Eulerian method
Answer» C. Both Lagrangian and Eulerian methods
Discussion