Engineering, 18.09.2019 19:30 davidtrott5761
Water flows through a very long 52 mm id (internal diameter) drawn copper pipe. the pipe is horizontal and has an internal roughness height of ε=0.0015 mm. the pressure drop along a 200m long section of the pipe is 100 kpa. find the friction factor f, reynolds number and average speed of the flow in the pipe. is the pipe flow laminar or turbulent?
Answers: 3
Engineering, 03.07.2019 15:10
Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.
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Engineering, 04.07.2019 18:10
Which of the following controllers anticipates the future from the slope of errors over time? a)-proportional b)-on/off c)-integral d)-derivative.
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Engineering, 04.07.2019 18:10
Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa
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Engineering, 04.07.2019 19:10
For a process taking place in a closed system containing gas, the volume and pressure relationship is pvi-constant. -1.5 bar, the process starts with initial conditions, pi = =0.03 m3 and ends with final volume, v2-0.05 m3 determine the work done by the gas.
Answers: 2
Water flows through a very long 52 mm id (internal diameter) drawn copper pipe. the pipe is horizont...
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