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One kg of an ideal gas (gas constant R=287 J/kg.K) undergoes an irreversible process from state-1 (1 bar, 300 K) to state -2 (2 bar, 300 K). The change in specific entropy (s1-s2) of the gas (in J/kg.K) in the process is 1 AnswerOne kmol of an ideal gas (Cp = 21 kJ/kmol.K) undergoes a constant pressure process from 300 K to 500 K. The molar entropy of the gas at 300 K is 150 kJ/kmol.K. The molar entropy (in kJ/kmol.K) at 500 K (up to 1 decimal place) is ________.0 AnswerA certain amount of an ideal gas is initially at a pressure P1 and temperature T1. First, it undergoes a constant pressure process 1-2 such that T2 = 3T1/4. Then, it undergoes a constant volume process 2-3 such that T3 = T1/2. The ratio of the final 1 AnswerO ne kg of air (that can be considered a calorically perfect gas with characteristic gas constant R = 287 J/kg-K and specific heat ratio 1.4 ) undergoes a constant-volume process from an initial static pressure of 1 bar to a final static pressure of 4 bar. The increase in entropy (in J/kg-K) of air is ______0 AnswerConsider the following statements for an ideal gas undergoing a reversible non-flow process: P. If the process is adiabatic, the change in enthalpy of the gas is necessarily zero. Q. If the process is adiabatic, the change in entropy of the gas is necessarily zero. R. If the process is isothermal, the change in enthalpy of the gas is necessarily zero. S. If the process is isothermal, the change in entropy of the gas is necessarily zero0 AnswerAdiabatic work of 200 kJ is done on ideal gas of mass m = 1 kg (Cv=1000 j/kgk ), which is stored in a rigid container at a pressure of 100 kPa and temperature 300 K.1 AnswerThe molar specific heat at constant volume of an ideal gas is equal to 2.5 times the universal gas constant (8.314 J/mol.K). When the temperature increases by 100k, the change in molar specific enthalpy is ___ J/mol.1 AnswerManagement is the process of getting things done. State the meaning of the term process used in this statement. -CBSE business studies 2016 class 111 AnswerState the steps in the controlling process - CBSE business studies 2016 class 111 AnswerState the steps in the process of controlling -Business studies cbse 2017 class 121 AnswerIn an ideal gas turbine cycle, the expansion in a turbine is represented by (GATE-Aerospace-Engineering-2018)0 AnswerA microcanonical ensemble consists of 12 atoms with each taking either energy 0 state, or energy 𝜖 state. Both states are non-degenerate. If the total energy of this ensemble is 4𝜖, its entropy will be ________ 𝑘𝐵 (up to one decimal place), where 𝑘𝐵 is the Boltzmann constant.0 AnswerAir at 150 kPa and 323 K is filled in a rigid vessel of 0.05 m3 capacity. For air, assumed as an ideal gas, specific heat at constant volume is 0.7163 kJ/kg.K and the specific gas constant is 0.287 kJ/kg.K. Neglect kinetic and potential energy changes. If 30 kJ of heat is added, the final temperature (in K) of air (up to 1 decimal place) is __________.0 AnswerWhat is meant by irreversible process?2 AnswerA thread is usually defined as a "light weight process" because an operating system (OS) maintains smaller data structures for a thread than for a process. -gate-cse-20111 AnswerT wo moles of an ideal gas X and two moles of an ideal gas Y, initially at the same temperature and pressure, are mixed under isothermal-isobaric condition. The entropy change on mixing is __________J K–1. (Up to one decimal place. Use R = 8.31 J K–1 mol–1)0 AnswerA 1 mol piece of copper at 400 K is brought in contact with another 1 mol piece of copper at 300 K, and allowed to reach thermal equilibrium. The entropy change for this process is __________ (in J K1 to three decimal places)0 AnswerExplain process state with a diagram.1 AnswerO ne mole of helium gas in an isolated system undergoes a reversible isothermal expansion at 25 C from an initial volume of 2.0 liters to a final volume of 10.0 liters. The change in entropy (S) of the surroundings is ______ J K1 (up to two decimal places).0 AnswerOne kmol of an ideal gas at 300 K and 10 bar is reversibly heated in a constant volume process to 500 K. It is then reversibly and isothermally expanded to 2 bar. Take Cv = 20.8 kJ/kmol.K and R = 8.314 kJ/kmol.K. The total heat supplied (in kJ) to the gas (up to 1 decimal place) is ________.0 Answer
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