POE 1. Show the equation with substitution to determine if this truss static
determinate? (2 Points)
Equation:
2. What is the reaction force at joint A in the X direction?
(2 Points)
3. Solve for the external forces using static equilibrium formula for point Cy
(hint: EM=0) (M=FxD).
(3 Points)
4. What is the external force at RFAy.
(3 Points)
5. Draw truss in step 5 showing all external forces and angles. (10points)

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.

Which of the following ziegler nichols tuning methods the response of the controller to a step input should exhibit an s-shaped curve? a)-open loop mode b)-closed loop mode c)-both modes (open & closed) d)-none of the modes (open & closed)