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1.Air enters an adiabatic compressor at 100 kPa and 17 degrees C at a rate of 2.4 m^3/s. It exits at 257 Degrees (C). The compressor has an isentropic efficiency of 84%. Neglecting the changes in kinetic and potential energy, determine (a) the exit pressure of air and (b) the power input to drive the compressor.
2.Steam expands in a turbine steadily at a rate of 25,000 kg/hr from 8 MPa and 450 oC to saturated vapor at 50 kPa. If the power generated by the turbine is 4 MW, what is the rate of entropy generation during this process? Assume that the boundary of the turbine where heat is lost from the turbine is at the ambient temperature of 25 oC.
3.Liquid water is to be pumped by a 10-kW pump from 100 kPa at a rate 5 kg/s. What is the highest pressure the water can reach at the exit? Neglect the kinetic and potential energy change of the water. Take the specific volume of water as constant at 0.001 m3/kg.
A power plant emits 95 g/s of SO2 from an effective stack height of 60 m. The wind speed is 3 m/s and the solar insolation is slight. A) Estimate the ground level SO2 (ug/m^3) at a point 4 km directly downwind of the power plant
A 100 lb force vector F is aligned from A to B. Point A is located at the coordinates (2, 2, 2) and point B at (4,5,6). Calculate the moment of F about the y axis.
Starting from x = 0 with no initial velocity, the acceleration of a race car is defined by the relation a = 6.8e- 0.00057x , where a and x are expressed in m/s 2 and meters, respectively. Determine the position of the race car when v = 30 m/s.
The cross sectional dimensions of a 4-ft-long wood member at 30% moisture content is 1.5 in. x 7.5 in., and its weight is 11 lb. At oven-dry condition, its dimensions and weight are 1.35 in x 6.8 in., and 10.2, respectively. What is its specific g..
Write a computer program that generates a sequence of random variables from a normal distribution with mean 5 and standard deviation 2. a) Verify that sample mean and the sample variance converge to the respective population values.
The subsoil at the site is a thick layer of soft alluvial river silts and sands, the bearing capacity of the silt has been found to be in the region of 80 kN/m2. There is a high ground water table present.
what was involved in the first far-reaching, comprehensive study of Earth's oceans?
Then calculate a 6% tax on the total and display the total amount owed (including the tax) Round your answer to two decimal points and include the dollar sign in your display as appropriate.
There are many parallels between the industrialization of the United States after Reconstruction and the modernization of the American workforce in the last twenty to thirty (20-30) years as it transitions from industry to a service-oriented econo..
A short concrete column is being used to support the roof over a pedestrian walkway. The unbraced column length is 9 feet and supports a dead load of 12 kips and a live load of 20kips.
To determine the elevation of a point B from the elevation of a point A, which is 511.6 ft. When the transit was set up over the point A, the height of the transverse axis above that point was 4.92 ft.
The column is composed of two materials, the inner is brass with a diameter of 100mm and the outer is aluminum with a diameter of 150mm. A rigid flat plate is placed on top to insure that both materials move together when compressed.
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