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The Hub and Spoke Concept continues its development in the various modes of transportation (Maritime, Air, Truck, and Rail). Describe some of the key advantages this concept brings to the various modes of transportation.
Evaluate the stability using Rouths Hurwartz criterion and obtain the range of K value for the stability under various controllers and evaluate the relative stability of the system with P and I controllers.
A two-pole, three-phase synchronous generator has a balanced three-phase winding with 15 turns per phase. If the three-phase currents are given by ia = 100 cos 377t, ib = 100 cos(377t - 120°), and ic = 100 cos(377t - 240°)
If a 500-hp, 90% efficient synchronous motor, operating at full load and 0.8 leading power factor, is added instead of the capacitor in part (a), calculate the resulting power factor.
What is the required flow rate of cooling water to the exchanger between the wasteheat boiler and the absorber and how much heat must be removed by the two heat exchangers cooling the recycled absorber liquid? Why is there a need to remove this heat?
Estimate a value for the total project cost that will give 98% confidence that the project can be carried out within the amount estimated.
estimate the necessary wall thickness. No corrosion allowance is necessary.
In the process of Example 6.2, the flow rte of streams 1′ and 2′ is made very high, while the state of streams 1, 2, and 1′ are the same as in the previous example. Repeat the calculation of entropy generation for these new conditions.
.At time zero, the valve is opened; at time t, the valve is closed, and the bulkcontents are analyzed. Explain how this information can be used to calculate thediffusion coefficient in this binary gas mixture.
A three-phase load, connected to a 440-V bus, draws 120 kW at a power factor of 0.85 lagging. In parallel with this load is a three-phase capacitor bank that is rated 50 k VAR. Determine the resultant line current and power factor.
derive the time constant for transfer of a metabolite from a particular cell to a neighboring cell. Assume that these are two epithelial cells whose geometry can be approximated as a box and that the two adjacent boxes are connected with transfer ..
The geometry and dimensions for a section of the blood vessel are shown on the right. Based on the Poiseuille's law the viscous resistance against blood flow through this section is determined to be 0.0002 mmHg•s/ml. If the diameter of the vessel ..
The mass transfer coefficients are HL=0.436 m and kGa=6.06x10-7kg mol/s m3Pa and are to be assumed constant in thetower for the given concentration range. Use equilibrium data from Appendix A.3. Bynumerical or graphical integration, determine NG. ..
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