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TLS Online TPP Program

#Question id: 14321

Both Saccharomyces cerevisiae yeast and Zymomonas mobilis bacteria produce ethanol from glucose under anaerobic conditions without external electron acceptors. The biomass yield from glucose is 0.11 g g-1 for yeast and 0.05 g g-I for Z. mobilis. In both cases the nitrogen source is NH 3. Both cell compositions are represented by the formula CH 1.800.5N0.2. Compare actual yield with theoretical maximum for Zymomonas mobilis bacteria ?

#Section 5: Bioprocess Engineering and Process Biotechnology
  1. 90% of theoretical maximum
  2. 92% of theoretical maximum  
  3. 92% of theoretical maximum 
  4. 94% of theoretical maximum         
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TLS Online TPP Program

#Question id: 14427

#Section 5: Bioprocess Engineering and Process Biotechnology

In which of the following controllers, the performance will improve with time?
TLS Online TPP Program

#Question id: 14428

#Section 5: Bioprocess Engineering and Process Biotechnology

The sensor, which is an integral part of fermentation equipment, the measured value cannot used directly for control. this type of controlling system is called  
TLS Online TPP Program

#Question id: 14429

#Section 5: Bioprocess Engineering and Process Biotechnology

Which one of the following constants is represented by Kp?
TLS Online TPP Program

#Question id: 14430

#Section 5: Bioprocess Engineering and Process Biotechnology

Which is not correctly match, effect of process variables on mass transfer characteristics?

Process variablemass transfer characteristics
P. P/V oxygen transfer rate
q. Impeller tip speedmixing time
r. Reynoldsnumber shear rate
TLS Online TPP Program

#Question id: 14431

#Section 5: Bioprocess Engineering and Process Biotechnology

the centrifugal separation of biomass of 80um sized cells of density 1.04kgm^-3 was carried out in a tubular centrifuge having a diameter of 15cm and rotating at 1200 rev/min. calculate the residence time if distance between the liquid surface and the axis of rotation was 0.8cm, the liquid viscosity were 1.0kgm^-3 and 0.013 gcm^-ls-1respectively. 
TLS Online TPP Program

#Question id: 14432

#Section 5: Bioprocess Engineering and Process Biotechnology

the centrifugal separation of biomass of 80um sized cells of density 1.04kgm^-3 was carried out in a tubular centrifuge having a diameter of 15cm and rotating at 1200 rev/min. the axis of rotation was 0.8cm, the liquid viscosity were 1.0kgm^-3 and 0.013 gcm-ls^-1 respectively. Calculate the volumetric capacity of the centrifuge if its length was 40cm?