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Some chemical processes, such as a distillation column, can be modeled as a series of first-order processes with the same time constant. For the process with transfer function
design a digital proportional controller with a sampling period T = 0.1 by applying the tangent method and the Ziegler-Nichols rules (see Sections 5.5 and 6.3.4). Use the circle criterion to show that the closed-loop system with actuator saturation nonlinearity of slope unity is asymptotically stable. Obtain the step response of the closed-loop system to verify the stability of the closed-loop system with actuator saturation.
For honey, which is Newtonian, the plot should be linear with the slope equal to the viscosity. Calculate the viscosity (or let Excel do it for you). Do a little Google or literature searching and see if you can find a value for the viscosity of h..
You add an aqueous solution of lead nitrate to an aqueous solution of potassium iodide. Draw highly magnified views of each solution individually, and the mixed solution including any product that forms.
Wet steam with quality 15% vapor is to be stored under pressure at 20 bar in a thermally insulated vessel. What is the temperature?
Assuming the solution has a heat capacity of 4.18 J/C g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
calculate the induced voltage, given that the number of parallel paths is equal to the number of poles for lap windings.
Ac measurements with constant voltage amplitude reveal that the total core loss of a certain magnetic circuit is 10 W at f = 50 Hz, and 13 W at f = 60 Hz. Find the total core loss if the frequency is increased to 400 Hz.
If the torque lost due to friction and wind age is 7% of the shaft torque, calculate the developed torque.
Calculate the magnetic field intensity if the space between the poles is air and the magnetic field intensity is uniform.
The data in Table 1 were obtained from a kinetic study of an enzymatic reaction. The substrate S (with a concentration s) was converted, using an enzyme, to a product in 4 different experimental runs. The initial conditions of each experiment (initia..
A 0.1025-g sample of copper metal is dissolved in 35 mL of concentrated HNO3 to form Cu2 ions and then water is added to make a total volume of 200.0 mL. (Calculate the molarity of Cu2.)
With this knowledge, which type of radioactive decay has the net effect of changing a neutron into a proton? Which type of decay has the net effect of turning a proton into a neutron?
A packaged boiler to produce 20,000 kg/h of steam at 40 bar
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