Penicillin is produced by P. chrysogenum in a fed-batch culture with the intermittent addition of glucose solution to the culture medium. The initial culture volume at quasi-steady state is V0 = 500 l, and glucose-containing nutrient solution is added with a flow rate of F = 50 l/h. Glucose concentration in the feed solution and initial cell concentration are S0 = 300 g/l and X0 = 20 g/l, respectively. The kinetic and yield coefficients of the organism are mm = 0.2 h-1 , KS = 0.5 g/l, and YX/S = 0.3 g dw/g glucose. If qP = 0.05 g product/g cells h and P₀ = 0.1 g/l, determine the product concentration in the vessel at t = 10 h

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#Question id: 7497

#Part-A Aptitude & General Biotechnology

How many seconds will a 375 m long train take to cross a man walking with a speed of 2 km/h in the direction of the moving train, if the speed of the train is 56 km/h?

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#Question id: 7498

#Part-A Aptitude & General Biotechnology

Two trains of length 250 m and 140 m are running on parallel lines in the same direction at 58 km/h and 32 km/h respectively. Find the time taken by the slower train to pass the driver of the faster one.

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#Question id: 7499

#Part-A Aptitude & General Biotechnology

Two trains, one from A to B and the other from B to A, start simultaneously. After theymeet, the trains reach their destinations after 4 h and 9 h respectively. The ration of their speeds is

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#Question id: 7500

#Part-A Aptitude & General Biotechnology

A man is standing on a railway bridge which is 180 m long. He finds that a train crosses the bridge in 20 seconds but himself in 8 seconds. Find the length of the train and its speed.

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#Question id: 7501

#Part-A Aptitude & General Biotechnology

A train 150 m long is running with a speed of 68 kmph. In what time will it pass a man who Is running at 8 kmph in the same direction in which the train is going?

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#Question id: 7502

#Part-A Aptitude & General Biotechnology

A train 220 m long is running with a speed of 59 kmph. In what time will it pass a man who is running at 7 kmph in the direction opposite to that in which the train is going?