MCQOPTIONS
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MCQOPTIONS
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 | |
| 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 | |
| 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 | |
| 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?$# |
| A. | only 1 |
| B. | only 1 and 2 |
| C. | 1, 2 and 3 |
| D. | only 3 |
| Answer» C. 1, 2 and 3 | |
| 55. |
“The_velocity_of_entrance_and_exit_through_a_nozzle_remains_the_same.”_Is_this_ever_possible?$# |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |