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Air at 1 atm and 27°C flows across a 12 mm diameter sphere at a free-steam velocity of 4 m/s. A small heater inside the sphere maintains the surface temperature at 77 °C. Calculate the heat loss by the sphere.
1 mol of liquid hexane at 10 bar, 25 °C, is mixed adiabatically and under constant pressure with hexane vapor at 180 °C. Determine the moles of the vapor that must be mixed with the liquid in order to produce a final state that consists of a vapor..
A three-phase, 60-Hz substation bus supplies two wye-connected loads that are connected in parallel through a three-phase feeder that has a per phase impedance of 0.5 + j2 Ω. Load 1 draws 50 kW at 0.866 lagging PF, and load 2 draws 36 kVA at 0.9 l..
The mole fraction of ammonia in exit gas from the tower is 0.003. Assuming isothermal operation and considering the following equilibrium data calculate the height of the packed bed.
The solenoid carries a current I and has n turns per unit length. Calculate the self-inductance per unit length of the solenoid.
Calculate the final solution volume and the shaft work in kW that the pump must deliver, assuming that the surface of the stored solution and the pipe outlet are both at 1 atm. Data. PH2O = 1.00 kg/L, Pgly = 1.26 kg/L. (Use to estimate solution de..
Calculate the Pearson correlation coefficient and discuss its value.
Write a MATLAB function that, given the system statespace matrices A, B, and C, the desired closed-loop poles, and the observer poles, determines the closed-loop system statespace matrices of a full-observer state feedback system with integral act..
determine the total depreciation cost during the first year.
The above stream is flashed isothermally to a pressure such that the vapor contains 90% carbon dioxide. Determine the pressure and the concentration of CO2 in the liquid.
The core loss at rated voltage is 45 W, and the copper loss at rated load is 100 W. Neglect the exciting current of the transformer. Find the per-unit voltage regulation when the transformer is supplying full load at 110 V and 0.9 lagging power fa..
Using a discount rate of 8% calculate the net present value for each site.
Estimate the molar ratio of hydrogen to carbon monoxide in the synthesis gas if the feed consists of an equimolar mixture of steam and methane.
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