Distinguish between reversible and inrreversible processes.

Q: 7-32 A 0.5-m³ rigid tank contains refrigerant-134a initially at 200 kPa and 40 percent quality. Heat…

A: Thus the entropy change in refrigerant is 3.875kJ/kg⋅K

Q: Calculate the change in entropy of the universe if 0.3 kg of water at 70°C is mixed with 0.2 kg of…

A: Given: Mass of water 1,m1=0.3kgTemperature,T1=700C=343KMass of water…

Q: A heat engine has a thermodynamic efficiency of .4. Calculate one cYCLE heat taken up by the engine…

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Q: A Carnot engine whose high-temperature reservoir is at 620 Ktakes in 550 J of heat at this…

A: The work done  by the Carnot engine is equal to the difference between heat energy  ​absorbed from…

Q: The surface of the Sun is approximately 5,550 K, and the temperature of the Earth's surface is…

A: Given: The temperature of the sun is Ts = 5550 K The temperature of the earth Te = 298 K The energy…

Q: Calculate the efficiency of a heat engine which takes in 7 million Joules of energy into the hot…

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Q: Consider mixing some of the ice water with the hot water and vice versa so that the two reservoirs…

A: The process of mixing cold water with hot water and vice versa is irreversible.Entropy formation…

Q: What must occur in cases where in entropy decreases?

A: The entropy is defined to be a measure of randomness. In other words, it is the amount of energy…

Q: How is the reversible process different from the thermodynamic process?

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Q: A The work for an isothermal process that moves from volume V₁ to a larger volume V₂ is given by ()…

A: True

Q: It is claimed that, while running through a whole number of cycles, a heat engine takes in 25 kJ of…

A: First law of thermodynamics or law of conservation of energy states that the total energy of an…

Q: Distinguish between quasi-static and non-quasi-static processes?

A: The quasi static process is a thermodynamic process, and it occurs slowly enough for the system to…

Q: Can the entropy of an ideal gas change during an isothermal process?

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Q: We ordinarily say that ΔU = 0 for an isothermal process. Does this assume no phase change takes…

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Q: Is it possible for the efficiency of a reversible engine to be greater than 1.0? Is it possible for…

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Q: How could you design a Carnot engine with 100% efficiency?

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Q: A certain heat engine does 31.2 k of work and dissipates 8.34 k of waste heat in a cydical process.…

A: Given Data: The work done by the engine is, W=31.2 kJ The dissipated heat energy is,…

Q: Differentiate between Quasi-static and Non-quasi-static Processes?

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Q: If there were no process, then there would be no need for ____ in a system.

A: To determine: What happens if there were no process in a system

Q: would a 100% efficient engine violate the first law of thermodynamics? What about a workless…

A: would a 100% efficient engine violate the first law of thermodynamics? What about a workless…

Q: has No cyclic heat engine reversible engine operating Prove e carnot > e otto with a greater…

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Q: Give some examples of reversible processes.

A: Reversible processes in thermodynamics are such that both system and surroundings can return back to…

Q: Differentiate between the reversible and irreversible process in thermodynamics.

A: Reversible processes are slow processes contains a series of stages and in stage the thermodynamic…

Q: What is the total entropy change if a 0.440 efficiency engine takes 3.78E3 J of heat from a 348 degC…

A: To calculate the total entropy change, we can use the equation:ΔS = Q / Twhere ΔS is the total…

Q: Can any other engine achieve efficiency more than the Carnot engine?

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Q: 53. When an aluminum bar is connected between a hot reservoir at 725 K and a cold reservoir at 310…

A: Given : Temperature of hot reservoir (Th) = 725 K Temperature of cold reservoir (Tc) = 310 K Energy…

Q: A heat engine that operates between two heat reservoirs at 900 ° C and 0 ° C, respectively, it has…

A: The formula for efficiency is ζ = QCQH -QC = 0.35 and we know that QH -QC =  Work done  =  W = 21…