In a cylinder of an automobile engine, immediately after combustion the gas is confined to a volume of 53.0 cm³ and has an initial pressure of 3.60 × 106 Pa. The pistonmoves outward to a final volume of 300 cm³, and the gas expands without energy transfer by heat. (Assume the gas in the engine is diatomic with y 1.40.)(a) What is the final pressure of the gas (in kPa)?=317.920813906kPa(b) How much work is done by the gas in expanding (in J)?238.559389571J(c) What If? If the engine operates in an ideal Otto cycle and 0.0125 mol of fuel-air mixture is injected into the cylinder during the intake stroke, what are thetemperatures (in K) at points A, B, C, and D of the cycle as shown in the figure?PTA TCAdiabaticCprocessesΤΑA BTBТоТр===||BVV2V₁KK K KK

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Answered: In a cylinder of an automobile engine,…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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5- Water vapor at 20000 kg / hour flow enters a steam boiler with a specific volume of 225 kPa 0.7565 m3 / kg. With the energy it receives from the fuel in the combustion chamber of the boiler, it rises up to 1200 kPa at 200˚C. Accordingly, how much heat does it gain in a second in the boiler? A. 454.5 kJ/sB. 549.8 kJ/sC. 609.3 kJ/sD. 2349.8 kJ/sE. 1144.7 kJ/s
Entropy can be defined as a level of disorder. This disorder in not necessarily related to thermodynamics only. Discuss in your own words your understanding of the concept of entropy with respect to non-engineering applications of our life with the help of two examples. Discuss, in your own words, why is important to define and understand the concept of entropy.
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One-quarter Ibmol of oxygen gas (O2) undergoes a process from p1 = 20 lb;/in?, T1 = 500°R to p2 = 150 Ib/in?. For the process W = -500 Btu and Q = -152.5 Btu. Assume the oxygen behaves as an ideal gas. Determine T2, in °R, and the change in entropy, in Btu/PR.
Steam enters a turbine with an enthalpy of 3300 KJ/kg and leaves with an enthalpy of 2400 kJ/kg. The power output of the steam turbine is 6 MW Determine the work done per unit mass of the steam flowing through the turbine. choices:a.871.78 KJ/Kg b.881.87 KJ/Kg. c.788.82 KJ/kg. d.-871.78 KJ/Kg Calculate the mass flow rate of the steam. choices:a.8.60 kg/s. b.6.80 kg/s. c.8.61 kg/s d.7.68 kg/s need complete solution and proper symbols:)
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Which of the following is incorrect about the overall energy balance and mechanical energy balance in fluid flow phenomena?A. The former only accounts the first law of thermodynamics while the latter includes the second.B. The former only accounts the work brought by changes in the volume while the latter includes the Δ(PV) work.C. The enthalpy of the system for both balance is the sum of the changes in the internal energy and the reversible work at constant pressure.D. The former is not often used to evaluate a system with changing pressure unlike the latter.
In an engineering system, air passes through two sequential processes. These processes Information about it is given below. Process 1-2: Polytropic compression, n = 1.3, P1=100 kPa, v1 =0.04 m3 /kg v2 =0.02 m3 /kg. Process 2–3: v3 = constant pressure process up to v1. In the light of this information, 1)draw the P-v diagram of the system. 2)Work per unit air mass in kJ/kg set as.
A container maintains a constant pressure of 40800 Pa while changing to a volume of 791 liters. If 31080 J of work was done by the gas, what was the starting volume? *
An oxygen gas R = 0.2598 KJ/kg°k and k = 1.395. If 4 kg of oxygen undergo a reversible non flow constant pressure process from initial volume =1.2 cubic meter and initial pressure = 690 kPa to a state where final temperature = 600°C. From the above statement: What is the initial temperature ? * 786.76°K 797.10 °K 876.50°K 796.77 °K Other: Determine the constant volume specific heat. * 0.6580 KJ/Kg-°K 0.6568 KJ/Kg-°K 0.5897 KJ/Kg- K 0.6577 KJ/Kg-°K
An oxygen gas R = 0.2598 KJ/kg°k and k = 1.395. If 4 kg of oxygen undergo a reversible non flow constant pressure process from initial volume =1.2 cubic meter and initial pressure = 690 kPa to a state where final temperature = 600°C. 1. Determine the Change in Internal Energy. choices: a.200.60 KJ. b.198.45 KJ. c.99.54 KJ. d.200.55 KJ 2. Determine the constant pressure-specific heat. choices: a.0.9865 KJ/kg-°K. b.0.9175 KJ/kg-°K. c.0.8580 KJ/Kg-°K. d.0.7843 KJ/kg-°K need complete solution, cancellation and symbol:)
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