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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?
Does there exist a kinetic differential equation for which all the conditions (4.24) hold except the inequalities and which is still induced by a deficiency zero mechanism (although surely not by a generalised compartmental system)?
Water at 20 °C 30 bar is heated in a closed system under constant pressure. If the quality in the final state is 75%, what is the amount of heat?
describe the principles of a vapour adsorption refrigeration system and compare this to a vapour recompression system.
Your boss has asked you to recommend a value for the vapor, liquid ratio V/L. What is your recommendation?
What is the mass of the water in the container, assuming that all the heat lost by the copper is gained by the water?
Calculate the theoretical stages needed to separate a 10 mole% ethanol liquid saturated feed into a 80 mole% distillate and a 0.1 mole% bottoms at 1 atmosphere pressure.
At what temperature does the equilibrium mole fraction of ammonia equal 0.50 for a pressure of 100 bar, assuming the equilibrium mixture is an ideal solution of gases?
The resting potential of the membrane is 52 mV at room temperature. Find the Kþ cytoplasm concentration.
Ethane (C2H6) can be dehydrogenated to ethylene (C2H4), which can be dehydrogenated further to acetylene (C2H2). A reactor is fed with ethane and steam at a 1:1 mole ratio (The steam simply acts as a diluent). If the reactor runs at 1 atm and the rea..
Calculate the concentration of all ions present in each of the following solutions of strong electrolytes.
What reactor temperature and pressure would you expect to be optimal for these processes? What constraints might apply?
What is the net energy balance ratio for the production of biodiesel from soy. You are replacing a 75 W light bulb in your home that operates, on average, 6 hours per day. You can select from the three light bulbs shown in the table below. Note th..
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