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Q 1/4
Score 0
Careful consideration is taken when designing a ductwork system for the velocity of airflow; If we want to reduce the velocity of the air delivering the same cfm in a duct run, how can this be accomplished?
30
Decrease the size of the ductwork.
Slow down the speed of the fan.
Close the manual volume damper.
Increase the size of the ductwork.
Q 2/4
Score 0
If a building requires 35 PSIG of water pressure for service on the roof, and is served by a booster pump, what discharge pressure at the pump is needed to maintain 35 PSIG pressure to the roof of a 100 foot building?
Hint: .433 psi = 1 feet of head or 1 psi = 2.31 feet of head
30
78.3
115.85
85.0
43.3
4 questions
Q.
Careful consideration is taken when designing a ductwork system for the velocity of airflow; If we want to reduce the velocity of the air delivering the same cfm in a duct run, how can this be accomplished?
1
30 sec
Q.
If a building requires 35 PSIG of water pressure for service on the roof, and is served by a booster pump, what discharge pressure at the pump is needed to maintain 35 PSIG pressure to the roof of a 100 foot building?
Hint: .433 psi = 1 feet of head or 1 psi = 2.31 feet of head
2
30 sec
Q.
When reviewing the controls drawings for valve positions you see a 3-way valve on the chilled water return line with “NO” at the coil, “NC” on the bypass, what will the path of travel for the water look like with no analog output to the valve?
3
30 sec
Q.
Which filter has a higher pressure drop with the same cfm and fpm, a 2” or 1” pleated MERV 8 filter?
