I need the answer as soon as possible Air (y 1.4, R = 287.43 J/kg K) enters a straight axisymetric duct at 300 K, 3.45 bar and 150 m/s andleaves it at 277 K, 2.058 bar and 260 m/s. The area of cross section at entry is 500 cm. Assumingadiabatic flow determine (i) stagnation temperature (ii) maximum velocity (i) mass flow rate (iv) area of%3Dcross section at exit.

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Answered: Air (y 1.4, R = 287.43 J/kg K) enters a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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(b) Show that the head loss due to sudden expansion in pipeline is a function of velocity head.
A fluid enters with a steady flow of 3.7 kg/s and an initial pressure of 690 kPa, an initial density of 3,2 kg/m", an initial velocity of 60 m/s, and an initial internal energy of 2000 kJ /kg. It leaves at 172 kPa, p = 0.64 kg/m, v = 160 m/s, and u = 1950 kJ/kg. The heat loss is found to be 18.6 kJ /kg. Find the work. NOTE: Show correct sign convention.
A blade pair in an axial flow compressor is being designed. The axial flow component of gas velocity is 174m/s. The engine diameter at the mean blade height is 0.73m and the blade height at the rotor inlet is 0.21m. The rotor's absolute inlet flow angle is 26 degrees. The stagnation conditions at the inlet to the blade pair are 298K and 130kN/m² Using Cp 1.005k/kg/K, R-0.287k/kg/K, and taking the ratio of specific heat capacities as 1.4, calculate the engine mass flow rate to the nearest kg/s
A fluid enters with a steady flow of 3.7 kg/s and an initial pressure of 690 kPa, an initial density of 3.2 kg/m3, an initial velocity of 60 m/s, and an initial internal energy of 2000 kJ Ikg. It leaves at 172 kPa, p = 0.64 kg/m?, v = 160 m/s, and u = 1950 kJ/kg. The heat loss is found to be 18.6 kJ /kg. Find the power in kW.
Q6 (a) Explain briefly the difference between incompressible and compressible fluid flow. (b) Air at pressure and temperature of 200 kPa, 373.2 K flows through a duct at 270 m/s. The gas constant and specific heat ratio of air are 0.287 kJ/kg.k and 1.4 respectively. (i) Show that the flow is compressible fluid flow. (ii) Determine stagnation pressure, stagnation temperature and stagnation density.
The power output of a steam turbine is 5 MW. The inlet conditions are 2 MPa of pressure, 400 degrees * C of temperature, 50 m/s of velocity and 10 m of elevation. The exit conditions are 15 kPa, 0.9 dry quality, 180 m/s and 6 m elevation. Compute: (i) The magnitude of A h, A ke, Ape, (ii) Work done per kg of steam,
04 soi PI -14 CLO3 , CLO4 Q4//A/ Air enters a constant-area insulated duct with a velocity of 118 m's, static temperature of 283 K, and stagnation pressure of 400 kPa. The duct is 4.5 cm in diameter, and 65 cm long. For a friction coefficient of 0.05, determine the change of static pressure and temperature in the duct. justify your solution for M2 Q4/B/ Heat is removed from airflow in a constant-arca duct, if flow enters at Mach 2.20, Ti= 310 K, and pi = 120 kPa. Determine exit Mach number and the amount of heat removing from the duct if the static temperature at exit section is 255 K. justify your solution for M2
Steam enters a nozzle at 377°C, 1.6 MPa, and a steadyspeed of 200 m/s and accelerates isentropically until it exitsat saturation conditions. Estimate the exit velocity andtemperature.
Steam enters a convergent-divergent nozzle at pressure of 22 bar and temperature of 300°C. the exit pressure is 4 bar. Steam flow rate is 11 kg/sec. Find (a) velocity of steam at throat and exit. (b) Area of nozzle at throat and exit in mm?. H - 22 Bar (P,) 12 Bar (P) Entrance Throat 4 Bar (P2) 3 Saturation Exit curve
Methane (CH4) fl ows through an insulated 15-cm-diameterpipe with f -0.023. Entrance conditions are 600 kPa,1008C, and a mass fl ow of 5 kg/s. What lengths of pipe will(a) choke the fl ow, (b) raise the velocity by 50 percent, or(c) decrease the pressure by 50 percent?
3. In a steady flow open system, a fluid moves between two boundaries. In boundary 1: A: = 0.028 m?, V1 = 32.5 m/min, vị = 0.025 m²/kg, and P1 = 300 kPaa. In boundary 2: A2 = 0.056 m?, density = 3.2 kg/m?, and P2 = 100 kPaa. Determine a) the mass flow rate; b) the velocity in boundary 2; c) the change of kinetic energy between boundaries; and d) the change in flow energy between boundaries.
3. In figure shown, pipes 1 and 2 are of diameter 3 cm, D3 = 4 cm. Alcohol (SG = 0.80) enters section 1 at 6 m/s while water enters at section 2 at 10 m/s. Assuming ideal mixing of incompressible fluids, compute the exit velocity and density of the mixture at section 3. The temperature is 20°C. Answer: 9 m/s, 928 kg/m3 (2) Ideal mixing (3) V₂-P3

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