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Problem 6.6:
Steam flows in a long, noninsulated pipe under a constant pressure of 2 bar. At the inlet of the pipe the temperature is 300 °C. Due to losses to the surroundings, the temperature at the exit of the pipe is 60 °C. Assume the surroundings to be at 25 °C. a) Draw a PV graph for the steam. Show the path of the process and all the relevant pressures and isotherms. b) Calculate the amount of heat removed from the steam. c) Calculate the entropy change of the steam. d) Calculate the entropy change of the surroundings. What is the entropy generation?
If the excitation is adjusted such that the magnitudes of the excitation voltage and the terminal voltage are equal, and if the motor is taking 20 A, find the torque developed.
Find an example of a zinc finger gene sequence using GenBank. Use BLAST to discover how many GenBank sequences are similar to the sequence you found. What does the result tell you about zinc finger genes?
Discuss the consequent effects on the real and reactive power losses, and on the voltage drop across the series impedance of the transmission system.
The voltage across a 4 mF capacitor is (t) = (200,000t 50,000)e-2000t µ(t) V. Find current through the capacitor
Write balanced equations for the combustion of each component of the fuel gas.
Calculate the heat when 100.0 mL of 0.500 M HCl is mixed with 300.0 mL of 0.100 M Ba(OH)2. Assuming that the temperature of both solutions was initially 25.0C and that the final mixture has a mass of 400.0 g and a specific heat capacity of 4.18 J..
Suppose the pressure in the reactor eventually equilibrates (levels out) at 360 kPa. What is the equilibrium percent conversion of NO? Calculate the reaction equilibrium constant at the prevailing temperature, Kp [(atm)-0.5]
A two-pole, three-phase synchronous generator has a balanced three-phase winding with 15 turns per phase. If the three-phase currents are given by ia = 100 cos 377t, ib = 100 cos(377t - 120°), and ic = 100 cos(377t - 240°)
The latter is available from the Trace Research and Development Center at the University of Wisconsin, Madison. Also try visiting the applicable websites.
Check the values given for the discounted-cash-flow rate of return and net present worth. If the company requires a minimum rate of return of 10 percent, which system should be chosen?
What does LD 50 mean in Industrial Toxicology and What is its significance to workers handling pesticides What units are used to quantify the standard service illuminance for specific work activities? Name the instrument used to appraise the lig..
Determine the speed at which the machine runs as a motor.
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