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Air fl ows adiabatically in a 3-cm-diameter duct, withf 5 0.018. At the entrance, T1 = 323 K, p1 =200 kPa, andV1 = 72 m/s. (a) What is the mass fl ow? (b) For what tubelength will the fl ow choke? (c) If the tube length is increasedto 112 m, with the same inlet pressure and temperature,what will be the new mass fl ow?

Air fl ows adiabatically in a 3-cm-diameter duct, withf 5 0.018. At the entrance, T1 = 323 K, p1 =200 kPa, andV1 = 72 m/s. (a) What is the mass fl ow? (b) For what tubelength will the fl ow choke? (c) If the tube length is increasedto 112 m, with the same inlet pressure and temperature,what will be the new mass fl ow?

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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Air fl ows adiabatically in a 3-cm-diameter duct, with
f 5 0.018. At the entrance, T1 = 323 K, p1 =200 kPa, and
V1 = 72 m/s. (a) What is the mass fl ow? (b) For what tube
length will the fl ow choke? (c) If the tube length is increased
to 112 m, with the same inlet pressure and temperature,
what will be the new mass fl ow?

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