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The distillation column shown in the drawing is used to distill a binary mixture. Symbols x, y, and z denote mole fractions of the more volatile component, while B, D, R, and F represent molar flow rates. It is desired to control distillate composition y despite disturbances in feed flow rate F. All flow rates can be measured and manipulated with the exception of F, which can only be measured. A composition analyzer provides measurements of y.
(a) Propose a feedback control method and sketch the schematic diagram.
(b) Suggest a feedforward control method and sketch the schematic diagram.
A low pass filter has a cut-off frequency of 8kHz and a high pass filter has a cut-off frequency of 5kHz. These two circuits are connected back to back in cascade to form an input-output system.
Consider a discrete time LTI system with impulse response given by h[n] = u[n + 2] - 2u[n - 1] + u[n - 4]. A. Determine the transfer function H(z) for this system. B. Determine the z transform Ys(z) of the step response for this discrete time LTI ..
System protection used to cover busbars - write about a scheme of each one of them about the advantages, disadvantages of each scheme and the principle of each scheme
If you have 1024 samples of a discrete-time band-limited signal sampled at a rate of 100MHz. what is the time period between samples. If you take a 2048 point FFT of the sampled signal, what will be the freuqency spacing between the output samples..
What is the function of the enable control input of a tri-state buffer If the output of two or more tri-state buffers is connected to each other, what is the restriction on enable control input lines
We will weigh objects by a strain gauge or R = 120 Ohms, GF= 2.02 mounted on copper column of 6-in. diameter. Find the change in resistance per pound placed on the column. Is this change an increase or decrease in resistance
What does the following code do. class MyListener implements ActionListener public void actionPerformed (ActionEvent e) MyListener listener = new MyListener Timer t = new Timer(interval, listener)
A 5-bit shift register receives an input of r = 1 0 0 1 00 1. After all data is input, what is in the shift register output
Explain why the short-circuit method for determining the Thevenin resistance of a circuit cannot be applied if the circuit does not contain any independent current or voltage sources.
A perfect conductor with bias voltage Vo is insulated with a wedge shaped dielectric material of angle, =450, whose relative permittivity is εr. Use electrostatic boundary conditions to determine the electric displacement, D
Draw the poles and zeros for the closed loop transfer function and determine whether the system is stable or unstable and determine overall transfer function T(z) for the system with unity feedback
A 240kW 500 Volt 1750rpm separately excited dc generator has an overall efficiency of 94%. The shunt field resistance is 60ohms, and the rated current is 5amps. The I^2R loss in the armature is 0.023pu.
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