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Homopolar generator. A spoked, conducting wheel rotates in an ac magnetic field as shown in Figure 10.44. The frequency of rotation is ω rad/s. The magnetic field intensity is H = 10 = 6 cos(ωt) [WA/m]
(a) Calculate the induced voltage between the center of the wheel and its outer perimeter.
(b) How does the solution change if the wheel is a solid conducting wheel?
air at 4mpa and 3000c enters a will insulated turbine operating at steady state with negligible velocity. the air
Ethylene and propylene are valuable monomers. A key step in the recovery of these materials is fractionation of the olefin from the corresponding paraffin (ethane or propane). These fractionation steps require refrigeration of the overhead condens..
What is the purpose of a suture? What are some of the important properties that must be considered when selecting a biomaterial for use as a suture? List four biomaterials that are commonly used for sutures.
Determine the kVA rating of the synchronous motor.
If the scatter in the individual samples of the previous problem is reduced to that listed below, would there be a justification (0.95 probability level) for saying there was a difference between the two materials? (Note that mean values of the tw..
the reaction rates of all the elementary reactions of type (ii) in a weakly realistic mechanism are linear functions of all the concentrations separately.
Develop a mass balance for a continuous diafiltration step and indicate the volumetric flow rates and concentrations of different species in the different streams obtained.
The composition of a gas derived by the gasification of coal is, volume percentage: carbon dioxide 4, carbon monoxide 16, hydrogen 50, methane 15, ethane 3, benzene 2, balance nitrogen. If the gas is burnt in a furnace with 20% excess air
A freshly prepared sample of a certain radioactive isotope has an activity of 10 mCi. After 4 h, the activity is 8 mCi.
Zirconium is one of the few metals that retains its structural integrity upon exposure to radiation. The fuel rods in most nuclear reactors therefore are often made of zirconium.
Strontium fluoride, SrF2, has a Kspvalue in water of 2.45 × 10-9at room temperature. Calculate the solubility of SrF2in water. Express your answer in units of molarity.
Should the lease-and-flood arrangement be accepted? How should this proposal be presented to the company board of directors who understand and make it a policy to evaluate by discounted-cash-flow rate of return?
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