The three methods most often used to quantify duct leakage rates are:
A) Cross-sectional analysis, duct pressurization, and leakage area.
B) Percentage of design flow, airflow per 100 sq ft of conditioned space, and leakage area.
C) Leakage area, duct draw down, and cross-sectional analysis.
D) Duct pressurization, duct draw down, and cross-sectional analysis.
[Ques. 2] TAB stands for:
A) Temperature adjusting and balancing. B) Trimming and balancing.
C) Testing adjusting and billing. D) Testing and balancing.
[Ques. 3] A building requires a pump with a head pressure of 15 feet and a flow rate of 12 gallons per minute. Which of the following pumps should be used, based on the supplied performance data?
A) Total head pressure range: 32 to 8 feet; flow rate: 0 to 8 gallons per minute
B) Total head pressure range: 16 to 2 feet; flow rate: 0 to 14 gallons per minute
C) Total head pressure range: 8 to 0 feet; flow rate: 0 to 10 gallons per minute
D) Total head pressure range: 12 to 3 feet; flow rate: 0 to 32 gallons per minute
[Ques. 4] What is the purpose of shutoff valves in the water loop of a water-source heat pump?
A) They allow you to service a water-source unit.
B) They are used to shut off different loop zones in a zoned loop system.
C) They allow water pressure to build.
D) They keep water inside the piping system.
[Ques. 5] How much vacuum must a fuel oil pump produce to lift fuel oil up 6 ft?
A) 6 1 = 6 in of vacuum B) 6 3 = 2 in of vacuum
C) 6 2 = 3 in of vacuum D) 6 2 = 12 in of vacuum
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