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1. Air is flowing isentropically through a converging duct which is fed from a large reservoir where the temperature and 350 K and 250 kPa, pressure are respectively. At a certain point along the duct, where the cross-sectional area is 0.005 m, the pressure is 150 kPa. Determine the Mach number, temperature and velocity at that point and also calculate the mass flow rate. (Ans: 330.1 K, 0.549, 162.8 kPa, 1.718 kg-s).

1. Air is flowing isentropically through a converging duct which is fed from a large reservoir where the temperature and 350 K and 250 kPa, pressure are respectively. At a certain point along the duct, where the cross-sectional area is 0.005 m, the pressure is 150 kPa. Determine the Mach number, temperature and velocity at that point and also calculate the mass flow rate. (Ans: 330.1 K, 0.549, 162.8 kPa, 1.718 kg-s).

Elements Of Electromagnetics
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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1:07 GAS CH 4 HW 1.pptx > 1. Air is flowing isentropically through a converging duct which is fed from a large reservoir where the temperature and 250 kPa, pressure are 350 K and respectively. At a certain point along the duct, where the cross-sectional area is 0.005 m, the pressure is 150 kPa. Determine the Mach number, temperature and velocity at that point and also calculate the mass flow rate. (Ans: 330.1 K, 0.549, 162.8 kPa, 1.718 kg-s"). 2. Air is supplied to a converging nozzle from a large reservoir where the temperature and pressure are 400 K and 100 kPa, respectively. At a certain cross-section, the temperature and pressure are measured to be 383.8 K and 63 kPa, respectively. Assuming isentropic flow, find the Mach number at this cross- section and the mass flow rate per unit area. (Ans: 0.46, 103.3 kg-s'-m²). 3. A converging nozzle is fed with air from a large reservoir where the temperature and pressure are 400 K and 170 kPa, respectively. The nozzle has an exit cross-sectional area of 0.001 m? and discharges into the atmosphere with a pressure of 100 kPa. The flow is isentropic throughout the nozzle. Determine the pressure, Mach number, temperature and velocity at the exit plane, and also find the mass flow rate. (Ans: 100 kPa, 0.9, 344.8 K, 334.8 m-s, 0.3388 kg-s). 4. A converging nozzle is fed with air from a
Transcribed Image Text:1:07 GAS CH 4 HW 1.pptx > 1. Air is flowing isentropically through a converging duct which is fed from a large reservoir where the temperature and 250 kPa, pressure are 350 K and respectively. At a certain point along the duct, where the cross-sectional area is 0.005 m, the pressure is 150 kPa. Determine the Mach number, temperature and velocity at that point and also calculate the mass flow rate. (Ans: 330.1 K, 0.549, 162.8 kPa, 1.718 kg-s"). 2. Air is supplied to a converging nozzle from a large reservoir where the temperature and pressure are 400 K and 100 kPa, respectively. At a certain cross-section, the temperature and pressure are measured to be 383.8 K and 63 kPa, respectively. Assuming isentropic flow, find the Mach number at this cross- section and the mass flow rate per unit area. (Ans: 0.46, 103.3 kg-s'-m²). 3. A converging nozzle is fed with air from a large reservoir where the temperature and pressure are 400 K and 170 kPa, respectively. The nozzle has an exit cross-sectional area of 0.001 m? and discharges into the atmosphere with a pressure of 100 kPa. The flow is isentropic throughout the nozzle. Determine the pressure, Mach number, temperature and velocity at the exit plane, and also find the mass flow rate. (Ans: 100 kPa, 0.9, 344.8 K, 334.8 m-s, 0.3388 kg-s). 4. A converging nozzle is fed with air from a
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