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1. A steam turbine inlet is at 1200 kPa, 500?C. The actual exit is at 300 kPa, with actual work of 407 kJ/kg. What is its second-law efficiency?
2. Find the second-law efficiency for the compressor in Problem 8.21.
Problem 8.21
An air compressor takes air in at the state of the surroundings, 100 kPa, 300 K. The air exits at 400 kPa, 200?C using 100 kW of power. Determine the minimum compressor work input.
For a steel stack that exhaust 1200 m^3/min of gases at 1atm and 400 K, calculate the inner diameter if you are designing for a maximum expected wind speed at the stack of 12m/s.
A W24X94 beam on a 6 ft span underpins a column that brings 110 kips dead load and 280 kips live load to its top flange at a location 2.5 ft from the left support.
Determine the tension in the cable as the box moves between A and C and determine normal and tangential force components the road exerts on the car at this instant.
For the structure shown below:- Determine the reactions. Draw the bending moment diagram, shear force diagram and axial force diagram of each member. Draw the bending moments on the tension side.
if the mass of liquid to vapor in a mixture of saturated liquid and vapor water is 0.8, what is the quality of the mixture
After falling from rest from a height of 32 m, a 0.45 kg ball rebounds upward, reaching a height of 22 m. If the contact between ball and ground lasted 1.5 ms, what average force was exerted on the ball?
A clear definition of the problem.
Select the strength of doublet needed to portray the uniform flow of ideal fluid around the cylindrical cable.
A stepped shaft ACB having a solid circular cross sections with two different diameters is held against rotation at the ends. If the allowable shear stress in the shaft is 60MPa, what is the maximum torque (To)max that may be applied at section C?
At that time, there is no more fuel in the rocket engine and the rocket continues upwards in free fall (g=0 ft/sec/sec). (a) How high will the rocket reach before it begins to fall back to the campus
The lubbock board of city development has decided to ask the city council to construct a tunnel under the snowcapped mountain range east to downtown lubbock so that out of town visitors can reach historic prairie dog town without becoming lost and en..
A mass of 5 kg of saturated liquid-vapor mixture of water is contained in a piston-cylinder device at 125 kPa. Initially, 2 kg of the water is in the liquid phase and the rest is in the vapor phase
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