Answered: Air flows upward at a volumetric flow…

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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Question

Air flows upward at a volumetric flow rate of 0.045 m3/s through an inclined pipe whose diameter is reduced through a reducer. The differential height between fluid levels of the two arms of a water manometer attached across the reducer is to be determined. The diameter at cross-section 1 is 0.06 m, and 0.04 m at cross-section 2. The atmospheric pressure is 110 kPa, and the air temperature is 50°.

Hint: A differential height between points 1 and 2 has not been specified. What assumption can you make?

Given data:
Air flow rate:
Q=45 L/s
=0.045 m/s
Initial diameter of the duct,
D, = 6 cm
=0.06m
Final diameter of the duct,
D; = 4 cm
=0.04m
Initial pressure, P =110kpa
Initial temperature,
T = 50°C
=50+273
=323°K

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