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3-5 A water-tube steam generator operating at 2400 psia has 50-ft-high 3-in ID tubes. The pressure Drop is given by 3.25 x 10-6 m2, where m is the mass flow rate, in pound mass per hour Assuming sanzati water in the downcomer, a water-steam mixture in the tubes with an avenge density of 18 lbm/ft3 ,and an inlet tube velocity of 3.0 ft/s, calculate the pump pressure necessary for the given flow.
Consider a cable box with a tamper resistant private key inside it. Can you imagine a side-channel attack on the above implementation to find the private key? Hint: Can you do something with a multimeter?
The project engineer, the shop foreman, and a consultant met to discuss the problem. The consultant proposed applying forward and back tension during rolling, the project engineer suggested reducing the reduction per pass, and the shop foreman fav..
Discuss the implications of these two estimates. How many collectors of 3 m × 10 m would be required to produce the energy for commuting with an all-electric car with 60% efficient batteries?
1. A long, circular aluminum rod is attached at one end to a heated wall and transfers heat by convection to a cold fluid. (a) If the diameter of the rod is tripled, by how much would the rate of heat removal change?
A long, solid cylinder of radius 2 ft hinged at point A is used as an automatic gate, as shown in Fig. P3-61E. When the water level reaches 15 ft, the cylindrical gate opens by turning about the hinge at point A.
When the steel cantilever beams AB and CD are mounted, there is a 4-mm gap between their free ends A and C. Determine the contact force between A and C when the 2-N load is applied. Use E = 200 GPa for steel.
a tank containing a fluid is stirred by a paddle wheel. to raise the temperature of the water in the tank from 14 c to
a 0.12m3 rigid tank contains saturated refrigerant r134a at 800kpa. initially 25 percent of the volume is occupied by
What will the schedule be if your planning horizon was only six months?
Construct a table of hourly sun angles for the 15th day of each month for a location of your choice. Also show the sunrise and sunset times for those days.
What is the pressure, in kPa, at the bottom of a column of ethyl alcohol (density = 785 kg/m3) that is 20m tall
Using the results from Example 11.2, tabulate and plot to correct vertical scale the hydraulic and energy grade lines. Assume a 10-m length between the two elbows.
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