Outline the correct brazing procedure for hard copper refrigeration piping?
What will be an ideal response?
Copper pipe and fittings should be cleaned before assembly
Nitrogen should be trickled through system before, during, and after brazing Plastic and other parts that can be damaged by heat should be protected Joint should be heated evenly using an oxy-acetylene torch
Brazing rod should be applied to the joint away from the flame
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A snapshot of an ad hoc network is shown in Figure 13.19.
Describe briefly the process taken to do the following:
(a) You need to create a route from the source node 6 to the destination node 23 using the DSR algorithm.
(b) Repeat part (a) using TORA routing.
(c) What changes would you make in part (a) if you use the AODV protocol?
If the thrust line is positioned to the right of the geometric centerline of the vehicle, the steering wheel will be pulled toward what direction?
What will be an ideal response?
Which of the following is true when installing grounding at more than one building?
a. Only the equipment grounding conductor is extended to the second building. b. The second building never requires its own grounding electrode. c. The equipment grounding conductor from the main building is terminated on a bus isolated from the rest of the cabinet. d. The grounded circuit conductor and the equipment grounding conductor must both be extended to the second building.
A well-designed and installed cooling tower only requires a minimum of maintenance.
Answer the following statement true (T) or false (F)