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Write the differences between feedback control process and feed forward control process?
The tank of volume 0.25 m^3 and height of 1m has water flowing at 0.005 m^3/min the outlet flow rate is governed by the linear relation Fout-0.1h, where h is the height of the water in the tank in m and Fout is the outlet flow rate in m^3/min. The inlet flow rate. changes suddenly from its nominal value of 0.05 m^3 min to 0.15 m^3/min and remains there. Find the time in minutes at which tank overflows.
Check the stability of the closed system whose characteristic equation is given by S^4 +4S³+6S² +2s+3=0.
Urea with formula structure of (NH2)2CO is diffusing very slowly in water solution at 31 oC to
develop the hydrolysis of urea into carbon dioxide and ammonia. The urea solution was produced
through the active site with the protein binding (MW = 726 300) containing 21 g protein/200 mL
solution and form a tetrahedral cluster that fills the cavity site through hydrogen bonds.Compare the diffusivity coefficient for urea solution at 31 oC using Stokes-Einstein and
Wilke-Chang methods.
2A = 3R + S
Time (h)
0
0.5
1.5
3
4
7
13
Concentration of
A (mol/lt)
0.2
0.181
0.155
0.131
0.12
0.099
0.077
Determine:
A) The reaction order and the reaction rate coefficient
B) The time to react 90% conversion
C) If the activation energy is 10,800 kj/mol, calculate the half-life
time at 60 C.
2A = 3R + S
Time (h)
0
0.5
1.5
3
4
7
13
Concentration of
A (mol/lt)
0.2
0.181
0.155
0.131
0.12
0.099
0.077
Determine:
A) The reaction order and the reaction rate coefficient
B) The time to react 90% conversion
C) If the activation energy is 10,800 kj/mol, calculate the half-life
time at 60 C.
21.What are the different concentration scales to measure air pollutants in the atmosphere?
20. What is nutrient cycles, explain briefly?
#340153 on Dec 2023