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A fan is to be selected to ventilate a bathroom whose dimensions are 2 m x 3 m x 3 m. The air velocity is not to exceed 8 m/s to minimize vibration and noise. The combined efficiency of the fan-motor unit to be used can be taken to be 50 percent. If the fan is to replace the entire volume of air in 10 min, determine
A) the wattage of the fan-motor unit to be purchased
B) the diameter of the fan casing
C) the pressure difference across the fan Take the air density to be 1.25 kg/m3 and disregard the effect of the kinetic energy correction factors.
Vehicular access to the Toronto Island Airport now involves the use of a small ferry, capable of carrying about 8 automobiles or an equivalent number of trucks, which operates across the 150 metre wide body of water known as the Western Gap
What are 3 of the equivalent fixed-point problems for f(x) = x2 - x -2=0?
When P = 800 lb, A) Draw the shear and bending moment diagram along its length; B) Determine the maximum tensile and compressive bending stresses; and C) determine the maximum shear stress.
A present sum of $50,000 at an interest rate of 12% per year compounded quarterly is equivalant to how much money 8 years ago
You are assined the task of process design for a fixed-bed carbon adsorber system. You are given the following data: the inlet airstream flows at 5000 acfm (at 95 degrees F and 1 atm) and contains .2% n-pentane by volume
A floor system consists of wide flange steel beams (W18 x 60) equally spaced at 8ft center to center. A 6inch reinforced concrete slab spans between beams. The bottom of the slab is coated with plaster and the top of the slab has ¾inch hardwood fl..
A notched beam, machined from AISI 1020 steel is subjected to reversed bending. Determine the endurance limit Se. Assume the survival rate of 99.9 percent and Cs = 0.75 and that the fatigue stress concentration factor is Kf =2.5.
Estimate the amount of depression storage (inches and cubic feet) in a 6-arce parking lot using the following rainfall and discharge data. The discharge data were measured at the only outlet in the parking lot.
The pollutant has a reaction rate coeeficient k of 0.25/day. Assuming is pollutant is well mixed in the lake, find the steady-state concentration of pollutant in the lake.
Test reveal that a normal driver takes about 0.75s before he can react to a situation to avoid a collision. It takes about 3 seconds for a drunk driver to do the same. If such drivers are traveling on a straight road
The flow rate of water flowing in a 3m wide channel is to be measured with a sharp-crested triangular weir 0.5m above the channel bottom with a notch angle of 60°. If the flow depth upstream from the weir is 1.5m
An open system Brayton cycle is used in a power plant. The atmospheric inlet conditions of the compressor are: temperature 30C and pressure 100kPa and the pressure at its outlet is 1200kPa.
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