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If the contraction from a 6-in to a 3-in ductile iron pipe described in Problem 10.26 was made with a cone angle of 120°, what would the resulting resistance coefficient be? Make a scale drawing of this reducer.
Note in Figs. 10.10 and 10.11 that the minimum energy loss for a gradual contraction (K = 0.04 approximately) occurs when the cone angle is in the range of 15° to 40°. Make scale drawings of contractions at both of these extremes for a reduction from a 6-in to a 3-in ductile iron pipe.
Refrigerant 22 enters an insulated compressor operating at steady state as saturated vap or at -16 C with a mass flow rate of 1.5 kg/s. Refrigerant exits at 7 bar, 70 C. Chang
The viscosity of an oil having a density of 51.9 lbm/ft3 is measured as 200 Saybolt seconds. Determine the dynamic viscosity in units of centipoise and pounds-mass per hour-fo
A metal cylinder metal cylinder 120.0mm long and 15 mm in diameter is to have a tensile force of 15000N applied. Which of alluvium, copper, brass, nickel steel and titanium ar
Water flow from a reservoir is controlled by a θ = 60? weir, and the water level is H + D = 5 m. If the opening height is H = 1 m, calculate the flow rate across the weir.
Steel-reinforced concrete pillars are used in the construction of large buildings. Structural failure can occur at high temperatures due to fire because of softening of the me
An investment pays $6000 at the end of the first year, $4000 at the end of the second year, and $2000 at the end of the third year. Compute the present value of the investme
Two meshing helical gears have parallel shafts. The gears were cut with a hob with a normal circular pitch of 0.5236 in. The gear center distance is 9 in., and the speed rat
The mean inside diameter of a sample of 100 washers manufactured by a machine is 0.252 m, and the standard deviation is 0.003 m. The application for the washers permits a tole
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