Question

The effect of increasing the stirrer speed in an unbaffled stirred tank reactor is that

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

Answer: (c).as the stirrer speed increases, the liquid will continue to circulate. Eventually a vortex will form.

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

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

Q. Oxygen transfer rate is increased with an increase in the stirrer speed in aerated bioreactor because

Q. Bioreactors, where vortex is formed, another dimensionless number, __________ is useful.

Q. Axial flow impellers

Q. The power required by an agitator operating in a gas-sparged system is

Q. The main function of the dimples provided in the cooling jacket is to

Q. A higher liquid height will lead to a higher gas hold up by which the oxygen transfer rate will be

Q. Which of the following number is calculated from the diameter and peripheral speed of the impeller?

Q. Laminar flow range of mixing speed is obtained for

Q. Which device is commonly used for measuring the rate of rotation (rpm) of the stirrer shaft?

Q. Which of the following will have the largest interfacial area per unit volume?

Q. The addition of antifoams to an aerated bioreactor will decrease oxygen transfer rates because antifoams

Q. The dynamic technique is based on the

Q. Industrial paddle agitators turn at the speed of

Q. The oxygen absorption rate can be determined by

Q. In the design of a paddle agitator, the ratio of paddle diameter to tank diameter is normally taken as

Q. Detergent like substances produced by microorganisms during a fermentation will lead to

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:

Q. Flooding is a condition/phenomenon which occur in a bioreactor when

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!