Engineering, 24.04.2020 03:50 salgadoj6933
What is the pressure drop when a liquid (viscosity = 0.001 Pa-s, density =1000 kg/m3 ) flows at a rate of 40 liters/minute over a 2-cm diameter steel pipe that is 100 meters long? Effective roughness factor (k) is 0.046 mm. By what percent has the pressure drop increased compared to the hydraulically smooth pipe found in problem #2? Estimate the electrical power required to a pump that would support the calculated flow rate. Assume the pump is 70% efficient. Note the power required to pump is = pressure drop * flow rate = [ΔP]*Q. Make sure your units are consistent.
Answers: 3
Engineering, 04.07.2019 18:10, DestyHilBan1183
Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.
Answers: 3
Engineering, 04.07.2019 18:10, mamasbug4285
An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0
Answers: 3
Engineering, 04.07.2019 19:10, nbunny7208
What is the chief metrological difference between measuring with a microscope and with an electronic comparator? a. the microscope is limited to small workpieces. a. the microscope is limited to small workpieces. c. the comparator can only examine one point on the workpiece. d. the microscope carries its own standard.
Answers: 1
What is the pressure drop when a liquid (viscosity = 0.001 Pa-s, density =1000 kg/m3 ) flows at a ra...
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