Question
a.
baffles permit turbulence conditions to arise at low stirrer speed
b.
baffles will allow axial mixing to occur even with radial flow impellers
c.
both (a) and (b)
d.
baffles prevent turbulent conditions in stirred tank reactors
Posted under Biochemical Engineering
Interact with the Community - Share Your Thoughts
Uncertain About the Answer? Seek Clarification Here.
Understand the Explanation? Include it Here.
Q. Main reason for using baffles in stirred tank reactors are
Similar Questions
Explore Relevant Multiple Choice Questions (MCQs)
Q. During aeration, a cylindrical reactor had a height of 10 m. Without aeration, the height was 7.5 m. Under these aeration and mixing conditions, the gas hold up in the reactor is
View solution
Q. A fermentation system has a KLa of 3 s¹ and a C0* of 5 ppm of O₂. If the bulk liquid is saturated with oxygen then the oxygen transfer rate will be equal to
View solution
Q. Which of the following would be best described as a radial flow impeller?
View solution
Q. Small propellers turn at the speed of either
View solution
Q. In aerobic microorganisms cultures radial flow impellers are used because
View solution
Q. Which of the following is not classified as an axial flow impeller?
View solution
Q. Power number (Np) is also known as
View solution
Q. Flooding is a condition/phenomenon which occur in a bioreactor when
View solution
Q. A cylindrical reactor has a liquid volume of 100,000 litres. It has an aspect ratio the ratio of the channel height to width of 1:1. The height of the liquid in the reactor will be approximately:
View solution
Q. Detergent like substances produced by microorganisms during a fermentation will lead to
View solution
Q. In the design of a paddle agitator, the ratio of paddle diameter to tank diameter is normally taken as
View solution
Q. The oxygen absorption rate can be determined by
View solution
Q. Industrial paddle agitators turn at the speed of
View solution
Q. The dynamic technique is based on the
View solution
Q. The addition of antifoams to an aerated bioreactor will decrease oxygen transfer rates because antifoams
View solution
Q. Which of the following will have the largest interfacial area per unit volume?
View solution
Q. Which device is commonly used for measuring the rate of rotation (rpm) of the stirrer shaft?
View solution
Q. Laminar flow range of mixing speed is obtained for
View solution
Q. Which of the following number is calculated from the diameter and peripheral speed of the impeller?
View solution
Q. A higher liquid height will lead to a higher gas hold up by which the oxygen transfer rate will be
View solution
Recommended Subjects
Are you eager to expand your knowledge beyond Biochemical Engineering? We've handpicked a range of related categories that you might find intriguing.
Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!
