MCQOPTIONS
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MCQOPTIONS
This section includes 18 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. |
Refer to Q7, 8, 9 and 10, and determine the motor Power required using estimated losses at 30%. |
| A. | 5.3 Hp |
| B. | 6.3 Hp |
| C. | 5.6 Hp |
| D. | 6.6 Hp |
| Answer» E. | |
| 2. |
Refer to Q7, Q8 and Q9, and determine Power Number from the appropriate correlation, and calculate the uncorrected Power required. (Gc = 32.2). |
| A. | 5.3 Hp |
| B. | 6.3 Hp |
| C. | 5.6 Hp |
| D. | 6.6 Hp |
| Answer» B. 6.3 Hp | |
| 3. |
Refer to Q7 and Q8, and determine the agitator speed in appropriate units for power calculation. |
| A. | 3 rps |
| B. | 1 rps |
| C. | 6 rps |
| D. | 4 rps |
| Answer» C. 6 rps | |
| 4. |
Refer to Q7, and determine the agitated batch liquid Reynolds number. (ρB = 64.0 lbs./cu. ft. and μB = 2.12 lb./hr-ft.) |
| A. | 977,035 |
| B. | 900,045 |
| C. | 877,035 |
| D. | 800,045 |
| Answer» B. 900,045 | |
| 5. |
It is proposed to mix a batch of water at 80 deg F in an agitated vessel. Determine the agitator speed in appropriate units for Reynolds number calculation for agitation speed of 60 rpm. Use an approximate loss of efficiency of 20% for the motor, gearbox, and bearings. Equipment details are given below: Equipment Data: Vessel Diameter (T) = 9.0 ft. Impeller Diameter (D) = 3.0 ft. Impeller type = Flat blade turbine. # of blades = 6 Blade width (W) =7 inches. Blade length (L) = 9 inches. Number of Baffles = 4; equally spaced. Baffle width (B) = 11 inches. Liquid Depth (H) = 9.0 feet. Impeller height above vessel bottom (Z) = 3 feet. |
| A. | 2, 400 rph |
| B. | 4, 500 rph |
| C. | 3, 500 rph |
| D. | 3, 600 rphView Answer |
| Answer» E. | |
| 6. |
What is the degree of agitation if bulk fluid velocity is 23.55 ft/min? (For 6 ft/min., degree of agitation = 1 and Degree of agitation varies from 0 to 10). |
| A. | 5 |
| B. | 6 |
| C. | 4 |
| D. | 3 |
| Answer» D. 3 | |
| 7. |
Fluid height in the tank is H = 16 m and Diameter of the tank, D = 14 m. Calculate the slurry volume in the tank. |
| A. | 2450 m3 |
| B. | 2463 m3 |
| C. | 3450 m3 |
| D. | 3463 m3 |
| Answer» C. 3450 m3 | |
| 8. |
“Power required for turbulent flow is independent of the viscosity of the fluid but proportional to fluid density”, this statement is applicable to which type of regime? |
| A. | Laminar regime |
| B. | Turbulent regime |
| C. | Transition regime |
| D. | Streamline regime |
| Answer» C. Transition regime | |
| 9. |
REFER_TO_Q7,_AND_DETERMINE_THE_AGITATED_BATCH_LIQUID_REYNOLDS_NUMBER._(‚ÂÀ√¨‚ÀÖ√ÑB_=_64.0_LBS./CU._FT._AND_‚ÂÀ√≠¬¨‚À´B_=_2.12_LB./HR-FT.)?$# |
| A. | 977,035 |
| B. | 900,045 |
| C. | 877,035 |
| D. | 800,045 |
| Answer» C. 877,035 | |
| 10. |
Refer to Q7, Q8 and Q9, and determine Power Number from the appropriate correlation, and calculate the uncorrected Power required. (Gc = 32.2).$ |
| A. | 5.3 Hp |
| B. | 6.3 Hp |
| C. | 5.6 Hp |
| D. | 6.6 Hp |
| Answer» E. | |
| 11. |
Refer_to_Q7_and_Q8,_and_determine_the_agitator_speed_in_appropriate_units_for_power_calculation.$ |
| A. | 3 rps |
| B. | 1 rps |
| C. | 6 rps |
| D. | 4 rps |
| Answer» B. 1 rps | |
| 12. |
0 ft. Impeller Diameter (D) = 3.0 ft. Impeller type = Flat blade turbine. # of blades = 6 Blade width (W) =7 inches. Blade length (L) = 9 inches. Number of Baffles = 4; equally spaced. Baffle width (B) = 11 inches. Liquid Depth (H) = 9.0 feet. Impeller height above vessel bottom (Z) = 3 feet? |
| A. | 2, 400 rph |
| B. | 4, 500 rph |
| C. | 3, 500 rph |
| D. | 3, 600 rph |
| Answer» B. 4, 500 rph | |
| 13. |
What is the degree of agitation if bulk fluid velocity is 23.55 ft/min? (For 6 ft/min., degree of agitation =1 and Degree of agitation varies from 0 to 10). |
| A. | 5 |
| B. | 6 |
| C. | 4 |
| D. | 3 |
| Answer» D. 3 | |
| 14. |
Refer to Q4, and estimate the Agitator impeller diameter D, assuming it to be 33% of tank diameter. |
| A. | 4.62 m |
| B. | 4.50 m |
| C. | 4.60 m |
| D. | 4.52 m |
| Answer» B. 4.50 m | |
| 15. |
Fluid height in the tank is H= 16 m and Diameter of the tank, D = 14 m. Calculate the slurry volume in the tank. |
| A. | 2450 m<sup>3</sup> |
| B. | 2463 m<sup>3</sup> |
| C. | 3450 m<sup>3</sup> |
| D. | 3463 m<sup>3</sup> |
| Answer» C. 3450 m<sup>3</sup> | |
| 16. |
Power consumption is less in ungassed fluids. |
| A. | True |
| B. | False |
| Answer» C. | |
| 17. |
Pseudoplastic consume less power than Newtonian fluids? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 18. |
“Power required for turbulent flow is independent of the viscosity of the fluid but proportional to fluid density”, this statement is applicable to which type of regime? |
| A. | Laminar regime |
| B. | Turbulent regime |
| C. | Transition regime |
| D. | Streamline regime |
| Answer» C. Transition regime | |