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(a) Draw an arbitrary closed contour on Figure 7.11 and show that it yields zero net flow of current.
(b) Suppose a capacitor is inserted into the circuit instead of any of the resistors and the current is switched on. Draw a closed contour for which the total net current is not necessarily zero.
In a 1-1 shell and tube heat exchanger , steam is condensing on the shell side at Tso c and the cold fluid is being heated on the tube side from t1 oc to t2 oc . the following equation relates t2 to the other vari..
For honey, which is Newtonian, the plot should be linear with the slope equal to the viscosity. Calculate the viscosity (or let Excel do it for you). Do a little Google or literature searching and see if you can find a value for the viscosity of h..
What annual production of glutamic acid can be achieved in a batch fermentation plant that has four 10,000 liter reactors? The reactors have jackets that can be used for steam heating or water cooling, but no internal coils.
A 100-liter fed-batch fermenter was successfully operated for 200 h using an aeration rate of 14 l/s and a 5 W agitator. It is proposed to scale the fermentation up to 10,000 liters. What agitator power consumption is required?
Suppose that there are n identical chip producers, let D(p) be the demand function, and let p(a) be the competitive equilibrium price. Calculate (dplda) and its sign.
1. It is desired to use 28.32 m 3 /min of air (metered at a pressure of 101.3 kPa and 294.1 K) in a process. This amount of air which is at rest enters the fan suction at a pressure of 741.7 mm Hg and a temperature of 366.3 K and is discharged at a p..
Steam enters a cooling tower at 200 °C and exits at 60 °C. Cooling is supplied by the surroundings which are assumed to be at 30 °C. The process takes place under atmospheric pressure (1 bar).
If a double-effect evaporator system is used with forward feed and U = 450 Btu/h-ft2-°F and 112 = 350 Btu/h-ft2-°F, and a vapor- space pressure of 4 in. Hg in the second effect determine the heat- transfer area of each effect, assuming equal areas..
Determine the concentration of the exhaust gas and Determine the flow rate of exhaust gas through the smokestack.
Assuming that the flux corresponding to a current of 25 A is 40% of that corresponding to a current of 100 A, determine the motor speed at a line current of 25 A at 250 V.
If EV, LE, are the distances between points (L, E) and (E, V) respectively (Fig. 2-3), show that the liquid and vapor fractions corresponding to point E satisfy the relationship
Chemical X costs $0.09 per pound. Chemical Y costs $0.04 per pound. Chemical Z sells for $0.80 per pound. If one-half of the selling price for chemical Z is due to costs other than for raw materials, what is the maximum profit obtainable per pound..
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