12. The flow diagram of a two-pipe change-over system MUST contain ________.
A. boiler, pump, and load
B. chiller, boiler, and pump
C. chiller, pump, and load
13. The most common engineering design flow loss calculation selects a pipe size based on which of the following?
A. allowable pressure drop and desired flow rate
B. designed length of pipe and allowable pressure drop
C. desired flow rate and designed length of pipe
14. Which of the following is the BEST design recommendation to minimize pressure loss in an air system?
A. Avoid use of round spiral ducts.
B. Route ducts as straight as possible.
C. Use consecutive and close-coupled fittings. I want the entire output in JSON format.
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