Problem 04.037 - Energy balance for water in a piston-cylinder deviceAn insulated piston-cylinder device contains 4.500 L of saturated liquid water at a constant pressure of 175 kPa. Water isstirred by a paddle wheel while a current of 8 A flows for 45 min through a resistor placed in the water. One-half of theliquid is evaporated during this constant-pressure process and the paddle-wheel work amounts to 400 kJ.WH₂OP= constantWshwwwProblem 04.037.a - Find source voltageDetermine the voltage of the source. Use data from the steam tables. (Round the final answer to two decimal places.)The voltage of the source isV.

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Answered: Problem 04.037 - Energy balance for…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A piston-cylinder device initially contains 0.8m3 of saturated water vapor at 250 kPa. At this state, the piston is resting on a set of stops, and the mass of the piston is such that a pressure of 300 kPa is required to move it. Heat is now slowly transferred to the steam until the volume doubles. a. Indicate knowns and unknows for each state as well as what type ofprocess is performed to get from one state to another. State anyassumptionsb. Determine the final temperaturec. Determine the work done during the processd. Show the process on a P-v diagram with respect to saturation linese. Determine the total heat transferred during this process
A fluid is heated reversibly at a constant pressure of 1.05 bar until it has a specific volume of 0.1 m'/kg. It is then compressed reversibly according to a law pu = constant to a pressure of 4.2 bar, then allowed to expand reversibly according to a law pel.- constant, and is finally heated at constant volume back to the initial conditions. The work done in the constant pressure process is -515 N m, and the mass of fluid present is 0.2 kg. Calculate the net work of the cycle and sketch the cycle on a p-v diagram.
1.A piston-cylinder containing air expands at a constant pressure of 150 KPa from a temperature of 285 K to a temperature of 550K.The mass of air in the cylinder is .05 Kg. Determine the system heat and work for the process
Solve the following problem: One kilogram of water contained in a piston–cylinder assembly, initially saturated vapor at 340 kPa, is condensed at constant pressure to saturated liquid. Consider an enlarged system consisting of the water and enough of the nearby surroundings that heat transfer occurs only at the ambient temperature of 25oC. Assume the state of the nearby surroundings does not change during the process, and ignore kinetic and potential energy effects. For the enlarged system, determine the heat transfer, in kJ, and the entropy production, in kJ/K.
Ms Png works on a piston-cylinder system which contains 0.05 m3 of nitrogen gasinitially at 200 kPa. At this state, a linear spring that has a spring constant of 150kN/m is touching the piston, but no force is exerting on it. Heat is then transferredto the nitrogen gas, causing the piston to rise and to compress the spring until thevolume inside the cylinder increases to 0.25 m3.a) Determine the final pressure inside the cylinder.b) Sketch the system on a P – V diagram.c) Calculate the total work done of the system.d) Deduce the work done against the spring to compress it.Given cross-sectional area of the piston = 0.25 m2Force applied by linear spring, F = kxk = spring constantx = displacement of the piston/spring
Refrigerant R-134a vapor in a piston-cylinder assembly, 8 bar saturated It is increased from steam to 50°C under constant pressure process. Unit mass for refrigerant Determine the work and heat transfer per kJ/kg. Changes in kinetic and potential energy can be neglected.
A rigid closed tank contains refrigerant 134a wnich is initially with a temperaf lure of D'C and a quality Of Ce0% . An electrical resistor inistalled inside the Fank transfers heat energy to the refrigerant at a rate Of 2 kW until the tånk contains only saturated vapor. if the tank is well - insulated and the mass Of the refrigerant is 1.5 kg, determine the time it takes for the process to be completed in seconds using 5 signifigant figures. a two- phase liquid - vapor muture
A tank is full of oxygen (M-32 g/mol) and open at the top. There is a frictionless nozzle near the bottom, the diameter of which is so small compared with the diameter of the tank that the velocity at the free surface is zero. There is no friction and nonflow work. Assuming ideal gas behavior for both of oxygen and air (M-29 g/mol), what is the velocity of the steady flow out of the nozzle? the Berp Tomall% Fashion Point 1 h=30 ft Point 2
A rigid tank contains saturated liquid and vapur mixture of Refrigerant -134a at 26^o C.
pls correct the given this is my last attempt
Water is heated in a closed container with rigid walls that is a perfect cube (1 m x 1 m x 1 m). The initial volume of the water (liquid + vapor) is 1 m'. The initial temperature of the water is 100 °C and it has a quality of 0.3. It is heated until it reaches a final pressure of 700 kPa. a. Sketch the process on the P V diagram. b. What is the work done by the water during this heating process in kJ? c. What is the final temperature of the water? d. What is the heat required in order for this process to occur in kJ? P V
3.2) An isolated piston-cylinder contains 3 liters of saturated liquid water at a constant pressure of 200 kPa. A paddle wheel stirs the water with a work of 450 kJ, while passing a voltage of 140V for 1 hour through a resistance as shown in the figure. If % of the liquid evaporates during the constant pressure process, obtain the supplied current. Ans≈ 8.38 A

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