Hot combustion gases enter the nozzle of a turbojet engine at 260 kPa, 747C, and 80 m/s, and they exit at a pressure of 85 kPa. Assuming an isentropic efficiency of 92 percent and treating the combustion gases as air, determine (a) the exit velocity and (b) the exit temperature.

Q: For a certain gas Cp = 14.2 cal mole-1 degree- 1. What will be the change in entropy of 15 moles of…

A:

Q: Two blocks, each containing 2.00 moles of silver (Cp = 25.35 Joules per kelvin per mole), are…

A:

Q: An ideal diesel engine has a compression ratio of 20 and uses air as the working fluid. The state of…

A: In this case, initially calculate the cut-off ratio by using ideal gas relations at states 2 and 3.…

Q: One mole of ideal monatomic gas undergoes the cycle shown in Fig. 1, consist- ing of an isothermal…

A:

Q: Calculate the change in system entropy when argon at 25 °C and 1.00 atm in a 500 cm3 container is…

A: In this question we are talking about argon and we know that argon is a monoatomic gas therefore,…

Q: An ideal Otto cycle has a compression ratio of 10.5, takes in air at 90 kPa and 40C, and is repeated…

A:

Q: An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression process, air…

A:

Q: Steam expands in a turbine steadily at a rate of40,000 kg/h, entering at 8 MPa and 500C and leaving…

A: Given: Now, so, now, Now,

Q: As shown in the figure, a chamber with a moveable piston and containing a monatomic ideal gas in an…

A:

Q: In air-standard diesel cycle shown in the figure, Consider N mol of an ideal monatomic gas, QL is…

A:

Q: Two consecutive carnot engines were designed in such a way that the efficiency of the first is 1.25…

A: Here in your question, a and b are completely different problems. So we will solve part i) and ii)…

Q: Steam enters an adiabatic turbine steadily at 7 MPa,500C, and 45 m/s, and leaves at 100 kPa and 75…

A: For the given initial pressure (p1) and temperature (T1), the initial enthalpy (h1) and the entropy…

Q: Suppose you want to operate an ideal refrigerator that has a cold temperature of -7.5°C, and you…

A: Suppose you want to operate an ideal refrigerator that has a cold temperature of -7.5°C, and you…

Q: A three-step cycle is undergone by 3.4 mol of an ideal diatomic gas: (1) the temperature of the gas…

A:

Q: As shown in the figure, a chamber with a moveable piston and containing a monatomic ideal gas in an…

A: Find the volume of the gas at state C (in L). Determine values (in kJ) for Q, W, and ΔEint for the…

Q: We know that for an adiabatic process pVg a constant. Evaluate “a constant” for an adiabatic process…

A: For an adiabatic process

Q: Suppose you want to operate an ideal refrigerator that has a cold temperature of -12.5°C, and you…

A: Temperature inside the refrigerator,  Coefficient of performance of the refrigerator,

Q: A Carnot engine has an efficiency of 0.60. When the temperature of its cold reservoir changes, the…

A:

Q: The figure shows a reversible cycle through which 1.00 mole of a monatomic ideal gas is taken.…

A: Given that,n=1 moleVc=8VbVb=3.6×10-3 m3Pb=11 atm

Q: 23. In a Rankine сусle steam enters the turbine at 2.5 Мра (enthalpies and entropies given) and…

A:

Q: Consider the adiabatic compression of 5 kmol of air from 105 Pa to 3x105 Pa. Init temperature is 25…

A: Given  P1  = 105 Pa  P2  = 3 × 105 Pa  T1   = 25 o C = 273 + 25 = 298 K  number of moles n = 5 kmol…

Q: Compute the entropy change of 5 g of water at 100 oC as it changes to steam at 100 degree celsius

A: Entropy can be expressed as, ΔS=QΔT

Q: The PV diagram in the figure below shows a set of thermodynamic processes that make up a cycle ABCDA…

A: Given that the pressure of A and pressure of B and pressure of C is given and also given the number…

Q: For the given cyclic process CAB as shown for a gas, the work done is A 6.0 5+ 4+ p (Pa) 3+ 2+ 1. 4…

A:

Q: A 4.00 L sample of a diatomic ideal gas with specific heat ratio 1.40, confined to a cylinder, is…

A:

Q: The difference in entropy AS=Sg-SA for two states A and B of a system can be computed by AS=[dQ/T…

A: We know that there is always increase in the entropy of the universe. But for irreversible process…

Q: A Carnot engine operates with TL=20°C and has anefficiency of 25%. By how many kelvins should the…

A: formula of efficiency of Carnot engine is as follows; η=1-TLTH…

Q: The difference AS=S; S,between the entropies of two states A and B of a system can be calculated as…

A: Given: Now, Because to measure entropy change we have to take the substance along any reversible…

Q: A simple ideal Brayton cycle with air as the working fluid has a pressure ratio of 10. The air…

A: Given:  pressure ratio = 10  compressor= 520 R   Turbine = 2000 R Now, (a) the air temperature at…

Q: Combustion gases enter an adiabatic gas turbine at 1540F and 120 psia and leave at 60 psia with a…

A: Using air table and isentropic relation,

Q: 1 mole of hydrogen gas, which has a heating heat of CP(J/mol.K) =27.17 + 3.8.10-3 T, is 2 atm and At…

A: In this question we have to find the final pressure of the gas according to the conditions given in…

Q: A 4.00 L sample of a diatomic ideal gas with specific heat ratio 1.40, confined to a cylinder, is…

A: Isobaric process: In this process the change in pressure is zero. Therefore work done during this…

Q: An air-standard cycle is executed within a closed piston– cylinder system and consists of three…

A: a) The images for P-v

Q: 1. Gaseous nitrogen actuates a Carnot power cycle in which the respective volumes at the four %3D…

A:

Q: An ideal gasoline engine operates with an initial cycle temperature of 48 C and exhaust temperature…

A: Solution: Convert the initial cycle temperature of 48 C to Kelvin scale. T1=48C=48+273 K=321 K…

Q: A 4.00 L sample of a diatomic ideal gas with specific heat ratio 1.40, confined to a cylinder, is…

A:

Q: During the compression stroke of a certain gasoline engine, the pressure increases from 1.00 atm to…

A: n = 0.016 molInitial Presure, P1 = 1.013 × 105 PaFinal Presure, P2 = 20.26 × 105 PaInitial…

Q: A Carnot engine operates between reservoirs at 600 and 300 K. If the engine absorbs 100 J per cycle…

A: Given  parameters are: Temperature of reservoir T1 = 600 k Temperature  of sink T2 = 300 k Energy…

Q: A hot-water stream at 70C enters an adiabatic mixing chamber with a mass flow rate of 3.6 kg/s,…

A:

Q: A four-cylinder spark-ignition engine has a compression ratio of 10.5, and each cylinder has a…

A:

Q: Consider the isothermal expansion of a 1.5 mole of monoatomic gas from a pressure of 1 atm to 0.45…

A: