Q1) For isentropic air flowing through a converging-diverging nozzle, complete the sentences below using increase or decrease: 1- When the air enters the nozzle with subsonic flow, as upstream cross-sectional area decrease, air velocity will 2- When the air enters the nozzle with supersonic flow, as upstream cross-sectional area decrease, air velocity will 3- When the air enters the throat with subsonic flow, as downstream cross-sectional area increase, air velocity will de

Elements Of Electromagnetics
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Q1) For isentropic air flowing through a converging-diverging nozzle, complete the
sentences below using increase or decrease:
1- When the air enters the nozzle with subsonic flow, as upstream cross-sectional area
decrease, air velocity will
2- When the air enters the nozzle with supersonic flow, as upstream cross-sectional
area decrease, air velocity will
3- When the air enters the throat with subsonic flow, as downstream cross-sectional
area increase, air velocity will n.
4- When the air enters the throat with critical flow conditions, as downstream cross-
sectional area increase, air velocity will A
5- As nozzle critical area decrease, maximum mass flow rate of air will de
Q2) A flow of 100 kg/s of exhaust gases (k =1.35 and C,=1100 J/kg·K) expands
isentropically from combustion chamber of 300 kPa and 400 °C through a nozzle to an
outside atmosphere at 100 kPa. Find:
The nozzle type, speed and Mach number at exit, exit and minimum areas.
Good luck
Transcribed Image Text:Q1) For isentropic air flowing through a converging-diverging nozzle, complete the sentences below using increase or decrease: 1- When the air enters the nozzle with subsonic flow, as upstream cross-sectional area decrease, air velocity will 2- When the air enters the nozzle with supersonic flow, as upstream cross-sectional area decrease, air velocity will 3- When the air enters the throat with subsonic flow, as downstream cross-sectional area increase, air velocity will n. 4- When the air enters the throat with critical flow conditions, as downstream cross- sectional area increase, air velocity will A 5- As nozzle critical area decrease, maximum mass flow rate of air will de Q2) A flow of 100 kg/s of exhaust gases (k =1.35 and C,=1100 J/kg·K) expands isentropically from combustion chamber of 300 kPa and 400 °C through a nozzle to an outside atmosphere at 100 kPa. Find: The nozzle type, speed and Mach number at exit, exit and minimum areas. Good luck
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