answer the following true or false. (a) A process that violates the second law of thermodynamics violates the first law of thermodynamics. (b) When a net amount of work is done on a closed system undergoing an internally reversible process, a net heat transfer of energy from the system also occurs. (c) A closed system can experience an increase in entropy only when a net amount of entropy is transferred into the system. (d) The change in entropy of a closed system is the same for every process between two specified end states.

Q: The inequality in the Clausius inequality holds for OB irreversible Cc.totally cycles OA totally…

A: Clausius inequality states that cyclic integral of the change in entropy of the reversible system is…

Q: Second-law efficiency is a measure of the performance of a device relative to its performance under…

A: Yes, second law efficiency gives the efficiency of a system by comparing with the reversible…

Q: kg of water vapor are 2.8mpa and with 100 degrees celsius reject of 2180 kj/kg of steam at constant…

A: To  determine enthalpy(kw), specific internal energy(kw),entropy(kj/K).

Q: Q2/ One mole of an ideal gas, initially at 303.15 K (30°C) and I bar, is changed to 403.15 K (130°C)…

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Q: As shown in the figure below, two reversible cycles arranged in series each produce the same net…

A: Given: The temperature of hot reservoir, TH = 1000°F The temperature of cold reservoir, TC = 450°F

Q: Which of the following is true? for an isolated system, dS>=0 O for a reversible process, dS=0 O for…

A: Isolated system: it is system in which neither energy nor mass can cross the system boundary.…

Q: steam engine isentropically expands 12.905 kg/s of steam from 0.68 MPa, 220°C. The exhaust is dry…

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Q: Q9: A fluid at a pressure of 3 bar, and with specific volume of 0.18 m'/kg , contained in a cylinder…

A: Note:- As per our guidelines we are supposed to answer only one question. Kindly repost other…

Q: Bernoulli's principle is an example of which law of thermodynamics. Explain why?

A: First law of thermodynamics is related to the conservation of energy.

Q: During the operation of a thermal machine, a reduction in the entropy of the working substance is…

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Q: Which of the following descriptions about entropy is/are TRUE? I. It is positive for an isolated…

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Q: Ten lbm per min of fluid is handled in a reversible steady flow manner by a thermodynamic system…

A:

Q: Ten lbm per min of fluid is handled in a reversible steady flow manner by a thermodynamic system…

A: The given values are -m=10 lbm, ∆h=175 ft , g=32 fts2The potential energy change is given as…

Q: Flow work of ideal gas does not change at       A)constant pressure       B)constant volume…

A: flow work is given as Wflow = d(PV)

Q: the following is example for closed system?  a. Internal combustion engine  b. Gas turbine  c.…

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Q: During a reversible process, 2.84 kg/s of gas rejects 302.8 kJ/s of heat isothermally at 24.2°C. For…

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Q: In a gas apparatus, it was recorded that the expansion index was 1.26 and the molar mass of gas is…

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Q: If the entropy change of an adiabatic, closed system process is positive, the process is which of…

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Q: 1 An isentrop (a) Irreversible and adiabatic (b) Reversible and isothermal (c) Frictionless and…

A: 1. An Isentropic process is always  Answer : c ) Frictionless and Adiabatic Explanation : In the…

Q: Which of the following descriptions about entropy is/are true? 1. It is positive for an isolated…

A: Entropy: It is the loss of energy which was available to do work. The entropy of any system is a…

Q: Third law of thermodynamics is concerned with: a. the value of absolute entropy b. energy transfer…

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Q: The maximum theoretical work obtainable, when a system interacts to equilibrium with a reference…

A: Meanings of each term in the options are as below: Entropy : It is the measure or degree of the…

Q: During an isothermal process, at 900F, the pressure on 9 lb of air drops from 85 psia to 10 psig.…

A: Given that, Temperature of the isothermal process, T=90 °F=305.372 K,Initial pressure of air, P1=85…

Q: Define exergy, which is the maximum useful work that could be obtained from the system at a given…

A: In simple words, EXERGY is defined as Maximum useful work that is obtained in a process in which…

Q: Q2/ One mole of an ideal gas, initially at 303.15 K (30°C) and 1 bar, is changed to 403.15 K (130°C)…

A: Given Initial temperature = 30o C = 303.15 K Final temperature = 130o C = 403.15 K Initial pressure…

Q: Q2/ One mole of an ideal gas, initially at 303.15 K (30°C) and / bar, is changed to 403.15 K (130°C)…

A:

Q: Water vapor flows through a two-stage turbine at steady-state, entering the inlet of the first…

A: Given:-T1=480°CP1=10 MPaP3=0.5 bar=50 kPax3=0.95m1=15.8 kg/sTo find:-Mass flow rate of steam to…

Q: An oxygen gas R = 0.2598 KJ/kg°k and k = 1.395. If 4 kg of oxygen undergo a reversible non flow…

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Q: Q5/ Steam enters a turbine with a pressure of 30 bar, a temperature of 400 °C, and a velocity of 160…

A: In the question only entropy Change with in the turbine is asked so no need to calculate entropy…

Q: A system executes a power cycle while receiving 900 Btu by heat transfer at a temperature of 900°R…

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Q: The first law of thermodynamics is not considering   a. heat release through chemical reactions. b.…

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Q: Explain into details why thermodynamics depends on the entropy?

A: Entropy: It is a thermodynamic state of quantity which measure the randomness or disorder of the…

Q: The rate of entropy transfer associated with heat transfer from a closed system operating at steady…

A: Entropy is nothing but the measure of irreversibility and is defined as the ratio of heat…

Q: Ten lbm per min of fluid is handled in a reversible steady flow manner by a thermodynamic system…

A: Given data, m˙ = Mass flow rate of the fluid = 10 lbm/min = 1/6 lbm/s g = 32 ft/s2 V1 = Velocity at…

Q: An η-efficiency machine receives 9 kJ of heat per second at 102 ° C and loses 4 kJ of heat per…

A: Given, Heat received = Qh = 9 kJ Temperature at source = Th = 102 oC = 375 K Heat rejected = Ql = 4…

Q: The state of a system is changed from state “A” to state “B” irreversibly, and then repeated using a…

A: The process is to change state A to state B. There are two approaches followed :  (1) Irreversible…

Q: what is thermodynamic second law?

A: …

Q: Example 3.5 If the processes of Ex. 3.4 are carried out irreversibly but so as to accomplish exactly…

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Q: First law of thermodynamics deals with * a) irreversible processes only b) reversible process only…

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Q: As shown in the figure below, two reversible cycles arranged in series each produce the same net…

A: Write the expression for the work done on each cycle:

Q: Answer the following true or false. Explain. (a) A process that violates the second law of…

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: For a closed system, an isothermal adiabatic change in an ideal gas implies that Select one: 1. w >…

A: From first law of thermodynamics Q = U + W Q is heat transfer U is internal energy change W is work…

Q: Three pounds of a perfect gas with R = 38 ft-lb/lb-R and K = 1.667 have 300 Btu of heat added during…

A: Given                       Heat, Q =300 Btu  Initial temperature T1 = 100oF…

Q: Q2/ One mole of an ideal gas, initially at 303.15 K (30°C) and / bar, is changed to 403.15 K (130°C)…

A: Given Data Initial temperature of gas is : T1=303.15 K Final temperature of gas is : T2=403.15 K…

Q: Steam enters a turbine stage with pressure of 5 bar, specific volume of 0.125m3/kgm and an enthalpy…

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Q: Ten lbm per min of fluid is handled in a reversible steady flow manner by a thermodynamic system…

A:

Q: What is the specific volume of air leaving a continuous flow adiabatic diffuser at 169°C and 110…

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Q: system undergoes a cycle while receiving 1400 kJ by heat transfer at a temperature of 700 K and…

A: Given:Heat receive, Qin=1400 kJSource temperature, T1=700 KDischarging heat, Qout=700 kJSink…

Laws of thermodynamics

Thermodynamics is a field of research, which needs the creation of absolute and ideal states and logical and practical examination of the actual conditions. By considering all the laws and theories of thermodynamics, the chemical reactions, the occurrence of processes, and physiological functions can be predicted with this field.