Question
a.
a small increase in stirrer speed will cause the liquid to enter the turbulent flow regime
b.
as the stirrer speed increases, the liquid will continue to circulate and then become turbulent
c.
as the stirrer speed increases, the liquid will continue to circulate. Eventually a vortex will form.
d.
A vortex will form at low stirrer speeds. As the stirrer speed increases the liquid will start to circulate
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. The effect of increasing the stirrer speed in an unbaffled stirred tank reactor is that
Similar Questions
Explore Relevant Multiple Choice Questions (MCQs)
Q. An increase in the heat transfer in the stirred tank reactor will be observed at
View solution
Q. If the stirring speed increased from 300 to 500 rpm leads to an increase in the reaction rate by two folds. Then it may be concluded that
View solution
Q. Oxygen transfer rate is increased with an increase in the stirrer speed in aerated bioreactor because
View solution
Q. Bioreactors, where vortex is formed, another dimensionless number, __________ is useful.
View solution
Q. Axial flow impellers
View solution
Q. The power required by an agitator operating in a gas-sparged system is
View solution
Q. The main function of the dimples provided in the cooling jacket is to
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
Q. Which of the following number is calculated from the diameter and peripheral speed of the impeller?
View solution
Q. Laminar flow range of mixing speed is obtained for
View solution
Q. Which device is commonly used for measuring the rate of rotation (rpm) of the stirrer shaft?
View solution
Q. Which of the following will have the largest interfacial area per unit volume?
View solution
Q. The addition of antifoams to an aerated bioreactor will decrease oxygen transfer rates because antifoams
View solution
Q. The dynamic technique is based on the
View solution
Q. Industrial paddle agitators turn at the speed of
View solution
Q. The oxygen absorption rate can be determined by
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. Detergent like substances produced by microorganisms during a fermentation will lead to
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. Flooding is a condition/phenomenon which occur in a bioreactor when
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!