MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Bioprocess Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A fermentation broth with viscosity 10-2 Pa s and density 1000 kg m-3 is agitated in a 3.00 m3 baffled tank using a Rushton turbine with diameter 0.5 m and stirrer speed 1 s-1. Estimate the mixing time. |
| A. | 37 s |
| B. | 33 s |
| C. | 35 s |
| D. | 39 s |
| Answer» B. 33 s | |
| 2. |
In the following equation, what does “λ” Represents for the formed eddies?\(\lambda = (\frac{v^3}{\epsilon })_{1/4}\) |
| A. | Wavelength |
| B. | Kinematic velocity |
| C. | Viscosity |
| D. | Dimension |
| Answer» E. | |
| 3. |
Which of the following is the slowest step in mixing process? |
| A. | Distribution |
| B. | Diffusion |
| C. | Dispersion |
| D. | Decomposition |
| Answer» B. Diffusion | |
| 4. |
“Rotational stirrers are advantageous for mixing”? |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
“Pitch of a propeller”, Here what does pitch refer to? |
| A. | Advance per resolution |
| B. | Advance per rotation |
| C. | Advance per Sharpness |
| D. | Advance per revolution |
| Answer» E. | |
| 6. |
WHICH_OF_THE_FOLLOWING_IS_THE_SLOWEST_STEP_IN_MIXING_PROCESS??$ |
| A. | Distribution |
| B. | Diffusion |
| C. | Dispersion |
| D. | Decomposition |
| Answer» B. Diffusion | |
| 7. |
Wavelength$ |
| A. | Kinematic velocity |
| B. | Viscosity |
| C. | Dimension |
| Answer» B. Viscosity | |
| 8. |
Mixing is sufficiently done away from the impeller? |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
Are Propellers and Impellers different in function from each other? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
“Rotational stirrers are advantageous for mixing”?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Which is the most frequently used impeller in the fermentation industry regarded as 6- flat-blade disc-mounted turbine? |
| A. | Propeller turbine |
| B. | Rushton turbine |
| C. | Bladeless turbine |
| D. | Screw turbine |
| Answer» C. Bladeless turbine | |
| 12. |
” Pitch of a propeller”, Here what does pitch refer to?$ |
| A. | Advance per resolution |
| B. | Advance per rotation |
| C. | Advance per Sharpness |
| D. | Advance per revolution |
| Answer» E. | |
| 13. |
What is the width of baffle in order of the tank diameter used for mixing? |
| A. | 1/5- 1/10 |
| B. | 1/12-1/15 |
| C. | 1/10-1/12 |
| D. | 1/5-1/12 |
| Answer» D. 1/5-1/12 | |
| 14. |
What is the ratio of tank diameter to impeller diameter for Newtonian fluids? |
| A. | 3:1 |
| B. | 2:1 |
| C. | 1:3 |
| D. | 1:2 |
| Answer» B. 2:1 | |
| 15. |
Which type of fermenter is used mainly for mixing? |
| A. | Air-Lift fermenter |
| B. | Stirred Tank fermenter |
| C. | Fluidised Bed bioreactor |
| D. | Packed Bed bioreactor |
| Answer» C. Fluidised Bed bioreactor | |