Small propellers turn at the speed of either – McqOptions

MCQOPTIONS

1.	Small propellers turn at the speed of either
A.	150 or 300 rpm
B.	20 or 150 rpm
C.	1150 rpm or 1750 rpm
D.	400 or 800 rpm
Answer» D. 400 or 800 rpm

Discussion

No Comment Found

Related MCQs

The oxygen uptake requirements of a microbial population is characterized by the following parameters: μm = 0.2 h-1, K0 = 0.2 mg O2.l-1, Y0 = 0.5 mg dry weight/mg O2 and C0,crit=0.8 mg.l-1 The required concentration of cells is 1000 mg.l-1 and the saturation oxygen concentration of the medium is 5.8 mg.l-1. The required KLa must be greater than
In a bioreactor, if at a particular time the oxygen transfer rate is 23 kg.h-1, then the oxygen uptake will be
A fermentation system has a KLa of 3 s-1 and a C0* of 5 ppm of O2. If the bulk liquid is completely depleted of oxygen, then the oxygen transfer rate will be equal to
A fermentation system has a KLa of 3 s-1 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
The effect of increasing the stirrer speed in an unbaffled stirred tank reactor is that
The oxygen absorption rate can be determined by
Industrial paddle agitators turn at the speed of
The main function of the dimples provided in the cooling jacket is to
The advantage of axial flow impellers over radial flow impellers is that axial flow impellers
Axial flow impellers