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1. A steam power plant operates with a high pressure of 4 MPa and has a boiler exit of 600?C receiving heat from a 750?C source. The ambient at 20?C provides cooling to maintain the condenser at 60?C. All components are ideal except for the turbine, which has an isentropic efficiency of 92%. Find the ideal and actual turbine exit qualities. Find the actual specific work and specific heat transfer in all four components.
2. For the previous problem, also find the specific entropy generation in the boiler heat source setup.
The frame is supported in part by normal and friction forces between the wall and the plate at A. Determine the friction force exerted on the plate at A. Also determine the minimum required coefficient of friction at A for the frame to remain in e..
Determine the initial angular acceleration of the assembly.
determine the angular acceleration of the spool and the acceleration of the trailer. The wheels have negligible mass and are free to rotate.
A 2kg moves down a 45 degree incline at a constant velocity of .1m/s. What is the value of the kinetic coefficient of friction between the object and the incline?
A well water has the following mineral contents in mg/L: Na+=20; K+=35; Ca+2 =15; Mg+2 =10; Sr=0.5; Cl- =40; HCO3- =65; CO3-2=5; SO4-2=15; and NO3=10.
Mark's refrigerator has just died. He can get a basic fridge or a more efficient fridge with an Energy Star designation. Mark wants to consider a 10 year planning horizon using an interest rate of 5%.
A canal was constructed running parallel to a river 1500 ft away. Both fully penetrate a sand aquifer with a hydraulic conductivity of 1.2 ft/d. The area is subject to rainfall of 1.8 ft/y and evaporation of 1.3 ft/y.
what is the equation to get volume of cut and volume of fill if i used excel formulated , in construction methods.
Problem 2: A cantilever wall is shown below. The backfill properties are as shown. Assuming that ?/3 for a soil-wall interfaces and neglecting the passive pressure around the toe of the wall, determine the following:
How many floors can be added to the building while maintaining the code required overturning factor of safety of 2.0 Assume the roof supports a wind load of 4 kips and all floors below support a wind load of 8 kips.
A compressor pressurizes air from 1 atm to 2.38 atm at steady state. At the entry the air's temperature is 70F, whereas at the exit it has quadrupled (in degrees F). At the entry the air's volumetric flow rate is 17 ft3/s
Determine the dimensions of the best hydraulic trapezoidal concrete channel section to convey water at a rate of 2200 gal per min on a channel slope of 0.015 m/m.
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