Which of the following statements is true?
a. Entrained air is room air that is moving and mixing with air as it leaves a supply duct terminal.
b. Primary air is also known as induced air.
c. Secondary air is the air delivered to the room from the supply duct.
d. The spread and drop of a diffuser should always be equal.
a. Entrained air is room air that is moving and mixing with air as it leaves a supply duct terminal.
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Piezoresistive sensors measure:
A. temperature and pressure changes. B. pressure and mechanical strain. C. crankshaft and camshaft position D. intake and coolant temperature.
A device that prevents freezing by draining water after the valve is closed is the _____.
a. temperature and pressure relief valve b. relief valve c. wall hydrant d. frostproof connector
A spacing collar is 0.375" wide. How many inches will 17 spacing collars take up on a shaft?
What will be an ideal response?
Almost all commercial lines are white pigs.
Answer the following statement true (T) or false (F)