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Which of the following terms best describes a measure of energy efficiency for refrigeration systems?
Refer to the following scenario:
A chilled water control valve at an AHU is having problems opening and closing properly against the system pressure. Which of the following values best describes the valve authority range that would be most appropriate for replacing the valve?
Which of the following factors affects vent system design and operation?
Which of the following terms is best defined as the mathematical relationship between variables involved in pump performance?
Which of the following phrases describes the point when a vacuum breaker is required on a shell and tube heat exchanger?
Where should an isolation valve be installed in relation to the dialectic union, when connecting two different piping materials?
Where should the secondary pump control differential pressure sensor be located to properly control a variable secondary chilled water system?
Which of the following phrases best defines pump efficiency?