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Unformatted text preview: a 50mlong smooth 8cmdiameter pipe. The maximum pressure
drop for which laminar flow is expected is approximately
(a) 30 kPa, (b) 40 kPa, (c) 50 kPa, (d) 60 kPa, (e) 70 kPa
Air at 20°C and approximately 1 atm flows through a
smooth 30cmsquare duct at 1500 ft3/min. The expected
pressure drop per meter of duct length is
(a) 1.0 Pa, (b) 2.0 Pa, (c) 3.0 Pa, (d) 4.0 Pa, (e) 5.0 Pa
Water at 20°C flows at 3 m3/h through a sharpedged 3cmdiameter orifice in a 6cmdiameter pipe. Estimate the
expected pressure drop across the orifice.
(a) 440 Pa, (b) 680 Pa, (c) 875 Pa, (d) 1750 Pa, (e) 1870 Pa Textbook Table of Contents  Study Guide Comprehensive Problems 421 FE6.12 Water flows through a straight 10cmdiameter pipe at a
diameter Reynolds number of 250,000. If the pipe roughness is 0.06 mm, what is the approximate Moody friction
factor?
(a) 0.015, (b) 0.017, (c) 0.019, (d) 0.026, (e) 0.032
FE6.13 What is the hydraulic diameter of a rectangular airventilation duct whose cross section is 1 m by 25...
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This note was uploaded on 10/27/2009 for the course MAE 101a taught by Professor Sakar during the Spring '08 term at UCSD.
 Spring '08
 Sakar

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