What instrument is used primarily for measuring leakage in ductwork?
A) A magnehelic gauge B) An inclined manometer
C) A duct blaster D) Duct leakage cannot be directly measured.
Question 2
In a flooded chiller, the refrigerant:
A) Circulates in tubes inside the chiller. B) Surrounds tubes filled with chilled water.
C) Surrounds tubes filled with refrigerant. D) Circulates throughout the building.