Q1: For the following structures: 1. Draw shear force and bending moment diagrams after solving the structures in dear
steps (points of zero-moment and zero-shear).
2- Find vertical displacements and rotations at the points (B) and (C) after removing the
vertical redundant Reaction at point B in the first step.
* Consider EI =1 in all calculations.
|
20 KN
А
10 kN/m
B
2
C
0.5 m
1.5 m
1 m
40.5 m/
*
(a)
4 KN
6 KN
3 kN/m
B
A
C
A
*
3m
3m
3m
X
X X
X
(b)

On a average work day more than work place firs are reorted

The flow rate of air through a through a pipe is 0.02 m5/s. a pitot static tube is placed in the flow. the radius of the pitot static tube is 1 mm. assuming the flow to be steady and the air to be at 300k, calculate the difference in total and static pressure if the diameter of the pipe is: (a) d 0.1 m d 0.05 m (c) d 0.01 m

A3-mm-thick panel of aluminum alloy (k 177 w/m-k, c 875 j/kg-k and ? = 2770 kg/m) is finished on both sides with an epoxy coating that must be cured at or above t,-150°c for at least 5 min. the production line for the curing operation involves two steps: (1) heating in a large oven with air at ts,0-175°c and a convection coefficient of h, 40 w/m2. k, and (2) cooling in a large chamber with air at 25°c and a con- vection coefficient of he 10 w/m2.k. the heating portion of the process is conducted over a time interval te which exceeds the ime required to reach 150°c by 5 min (h = r + 300 s). the coating has an emissivity of ? = 0.8, and the temperatures of the oven and chamber walls are 175 and 25°c, respectively. if the panel is placed in the oven at an initial temperature of 25°c and removed from the chamber at a safe-to-touch tempera ture of 37°c, what is the total elapsed time for the two-step curing operation?