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The pressure drop between the entrance and exit of a 150 mm diameter 90° elbow, through which ethyl alcohol at 20°C is flowing, is to be determined with a geometrically similar model. The velocity of the alcohol is 5 m/s. The model fluid is to be water at 20°C, and the model velocity is limited to 10 m/s. (a) What is the required diameter of the model elbow to maintain dynamic similarity? (b) A measured pressure drop of 20 kPa in the model will correspond to what prototype value?
Describe the differences among the three PLC types : rack/slot address based, tag based, and soft PLCDescribe the differences among the three PLC types : rack/slot address based, tag based, and soft PLC.
question a soap bubble with walls 398 thick floats in air. if this bubble is illuminated perpendicularly with sunlight
what are the four basic families of shape-production processes? Cite one advantage and one limitation of each family.
the tank has a 180mm diameter and 12 mm wall thickness. knowing that the tank contains compressed air under a pressure of 8 Mpa, determine the magnitude t of applied torque for which the maximum normal stress in tank is 75 Mpa.
The 160-N weights of the arms AB and BC of the robotic manipulator act at their midpoints. Determine the sum of the moments of the three weights about A.
some bacteria are propelled by biological motors that spin hair-like flagella. a typical bacterial motor turning at a
find (a) the power rating of the electric heater and (b) the temperature rise that the air experiences each time it passes through the heater.
a 10-lb block is attached to an unstretched spring of constant k12lbin. the coefficients of static and kinetic friction
How significant have advances in information and communication technologies since the late 1980's been on how we do business? And how have the major types of businesses that exist changed over this time?
Show how did you do the maintenance during your workshop
An auto speedometer is graduated in 5 mph increments and has an accuracy rated to be within ±4%. Estimate the uncertainty in indicated speed at 60 mph.
Knowing that the modulus of elasticity of brass is 105 GPa, determine the magnitude of the load P for which the deflection of the plug is 1,25 mm downward.
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