In microbial cultivation experiment with cells having significant maintenance requirements, the measured growth yield Y’ XS (G) and the true growth yield Y XS

#Question id: 13635

#Unit 12. Biochemical Engineering

Which of the following curves represents the function  Here, x represents the abscissa and y represents the ordinate.

#Question id: 40584

#Unit 12. Biochemical Engineering

In the open-loop process shown in the figure, the input 𝑈(𝑠), the transfer function 𝐺_𝑝(𝑠) and the output 𝑌(𝑠) are given in the Laplace domain in terms of the Laplace variable s. For this process, which of the following is true?

(where 𝑀, 𝜏_𝑝,𝐾𝑃, are the magnitude of the input, the characteristic time and the gain for the process, respectively)

#Question id: 40563

#Unit 12. Biochemical Engineering

The transfer function of a Proportional-Integral (PI) controller 𝐺_𝐶(𝑠) is given by 

where 𝐾_𝐶 is the controller gain, 𝜏_𝐼 is the controller integral time constant and s is the Laplace variable. The role of the integral component of the controller is to ____________. 

#Question id: 40560

#Unit 12. Biochemical Engineering

Which of the following is one of the eigenvalues for the matrix given below?

#Question id: 40559

#Unit 12. Biochemical Engineering

Consider the two functions  and 𝑓₂(𝑥) = 𝑥 ² − 2𝑥 + 2. Which of the following is the value of (𝑓₁ (𝑥) + 𝑓₂(𝑥)) as 𝑥 → 2 ?

#Question id: 31564

#Unit 12. Biochemical Engineering

A circle with center at (𝑥, 𝑦) = (0.5, 0) and radius = 0.5 intersects with another circle with center at (𝑥, 𝑦) = (1, 1) and radius = 1 at two points. One of the points of intersection (𝑥, 𝑦) is: