Chapter 6, Problem 6.4E

Consider a 12 cm internal diameter, 14 m long circular duct whose interior surface is wet. The duct is to be dried by forcing dry air at 1 atm and 15 degrees C throught it at an average velocity of 3m/s. The duct passes through a chilled roo, and it remains at an average temp of 15 degrees C at all time. Determine the mass transfer coeeficient in the duct.

note n=number of link(dont include the ground link (fixed))

6.(单选题) The DOF of the following mechanism is E A F=3x4-2x5-0=2 B F=3x3-2x4-0=1 F=3x3-2x3-2=1 D F=3x4-2x5-1=1

3. (计算题) Calculate the DOF of the following mechanism (a)唧筒机构

5. (计算题) Calculate the DOF of the following mechanism D A B E

4.(计算题) Calculate the DOF of the following mechanism wwwww التحفة www

VIMA

1. Calculation Calculate the DOF of the following mechanis m 2 3 1 Please enter the answer

a) Determine state of stress at all points (a, b and c). These points are located on the exteriorsurface of the beam. Point a is located along the centreline of the beam, point b is 15mmfrom the centreline and point c is located on the edge of the beam. Present yourresults in a table and ensure that your sign convention is clearly shownb) Construct Mohrs circle at this point andcalculate the principal stresses and maximum in‐plane shear stress (τmax) at pointc. sketch the resulting state of stress at this point clearly indicating themagnitude of the stresses and any angles associated with the state of stress (principal ormaximum in‐plane shear).