Which statements are true for an open hydronic system? Select all that apply.
A) Water is exposed to the atmosphere.
B) Most HVAC systems are open.
C) The pump must overcome frictional pressure plus (or minus) gravity head.
D) Flow can be achieved only by pumping.
A) Water is exposed to the atmosphere. and C) The pump must overcome frictional pressure plus (or minus) gravity head.
You might also like to view...
Texans won their independence as a result of the victory over Mexican armies at the Battle of
A. Santa Anna. B. Goliad. C. the Alamo. D. San Jacinto. E. the Rio Grande.
Technician A says that you should not use fuel hose for an application in which hot oil will be used, such as for a transmission cooler line. Technician B says that it does not make a difference whether the oil is hot or cold. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
The base circle, which surrounds the cam shaft, is a member of a cam mechanism.
Answer the following statement true (T) or false (F)
CATV providers depend on traditional metropolitan networks to carry traffic back to their head-end?
Indicate whether the statement is true or false