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For the PID controller that results by applying the Ziegler-Nichols tuning rules to the process
determine the discretized PID controller transfer functions (12.11) and (12.12) with N 5 10 and T = 0.1.
explain how a supercritical flow changes to a subcritical flow. You may need to refer text books and web pages to answer this question.
A condenser is required to condense n-propanol vapour leaving the top of adistillation column. The n-propanol is essentially pure, and is a saturated vapourat a pressure of 2.1 bara. The condensate needs to be sub-cooled to 45ŽC.Design a horizonta..
Forty-five kilograms of a solution containing 30 wt% ethylene glycol in water is to be extracted with furfural. Using Figures 4.14a and 4.14c, calculate:
Weight Percentage of MTBE (methyl tert-butylether) in Gasoline : Oxygen Content, If gasoline had a hypothetical chemical formula of C8H17, and we knew the chemical formula of MTBE as CH3OC4H9, what weight (actual weight and percent by weight) of M..
A mixture of ethanol and benzene is separated in a network of distillation and membrane separation steps. In one intermediate step, a near-azeotropic liquid mixture of 8,000 kg/h of 23 wt% ethanol in benzene is fed to a pervaporation membrane cons..
The feed contains 10 mol% acetone. Acetone of at least 95 mol% purity is wanted, and the aqueous effluent must not contain more than 1 mol% acetone. The feed will be a saturated liquid. Estimate the number of ideal stages required.
When the three-phase transformer bank delivers 250 kW at 240 V and 0.866 lagging power factor,
A client is interested in using a voice-recognition system to access the computer. Which of the following factors is least critical to success with this method?
Drift velocity and electric field intensity in conductors. A copper conductor with conductivity σ = 5.7 X 107 S/m carries a current of 10 A. The conductor has a diameter of 2 rom.
The feed is a saturated liquid at 330 kPa. The recovery of toluene in the distillate should be greater than 99%, and the recovery of ethylbenzene in the bottoms should be greater than 99%.
What is the wavelength regime of each of the lithographic techniques listed in Problem 9? (red-visible light, green-visible light, blue light, UV (E=SeV), e-beam (acceleration voltage of 10 keV), and x-ray).
Compute the power factor for zero voltage regulation on full load.
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