MCQOPTIONS
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MCQOPTIONS
This section includes 8 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. |
The units for the log mean temperature difference are __________ |
| A. | 1 / C |
| B. | C |
| C. | 1/2 C |
| D. | Dimensionless |
| Answer» C. 1/2 C | |
| 2. |
The fouling factor is _________ |
| A. | Is a safety factor |
| B. | Accounts for all resistances due to mass transfer |
| C. | Is a dimensionless number |
| D. | Accounts for all resistances due to heat transfer |
| Answer» E. | |
| 3. |
The evaporator economy is dependent on the ________ |
| A. | Heat transfer rate |
| B. | Mass transfer rate |
| C. | Energy balance considerations |
| D. | Mass balance considerations |
| Answer» B. Mass transfer rate | |
| 4. |
All of the coolant is at a uniform temperature, Tc , is this statement correct according to the assumptions for the Unsteady-state energy balance? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Refer to Q3, Q4 and Q5 estimate what is the adiabatic temperature rise for this reactor and what is its significance?
|
| A. | n<a href="https://www.sanfoundry.com/wp-content/uploads/2018/03/bioprocess-engineering-questions-answers-solving-unsteady-state-energy-balances-q6.png"><img alt="The adiabatic temperature rise for the reactor 250 K" class="alignnone size-full wp-image-208271" height="46" src="https://www.sanfoundry.com/wp-content/uploads/2018/03/bioprocess-engineering-questions-answers-solving-unsteady-state-energy-balances-q6.png" width="140"/></a> |
| B. | 230 K |
| C. | 200 K |
| D. | 250 K |
| E. | 260 K |
| Answer» D. 250 K | |
| 6. |
Refer to Q3 and Q4 and estimate what is the maximum rate at which heat must be removed by the cooling coil (kcal/min) and at what time does this maximum occur?
|
| A. | nQ = H<sub>R</sub> kc<sup>2</sup><sub>Ao</sub> V<sub>R</sub> |
| B. | 828 kcal/min |
| C. | 880 kcal/min |
| D. | -825 kcal/min |
| E. | 850 kcal/min |
| Answer» B. 828 kcal/min | |
| 7. |
Refer to Q3, and estimate what is the total amount of heat (kcal) that must be removed by the cooling coil when this conversion is reached?
|
| A. | nQ = H<sub>R</sub> r V<sub>R</sub> |
| B. | -2.3 10<sup>4</sup> kcal |
| C. | -2.2 10<sup>4</sup> kcal |
| D. | -2.4 10<sup>4</sup> kcal |
| E. | -2.6 10<sup>4</sup> kcal |
| Answer» B. -2.3 10<sup>4</sup> kcal | |
| 8. |
Chemical reactions or phase changes occur is this statement applicable for unsteady state energy balance? |
| A. | True |
| B. | False |
| Answer» C. | |