One of the best ways to achieve volume control in an air system, from a sound level standpoint, is the __________.
a) outlet damper control
b) variable speed motor control
c) fluid drive
d) direct drive
e) variable inlet vane control
Answer: B
One of the best ways to achieve volume control in an air system, from a sound level standpoint, is the __________.
a) outlet damper control
b) variable speed motor control
c) fluid drive
d) direct drive
e) variable inlet vane control
Answer: B