HYDRONIC HEATING AND COOLING
PRETEST/POSTTEST. EXAM 2025
QUESTIONS AND ANSWERS
T/F
Forced-air systems cost less than hydronic systems to operate and maintain because of the
durability and long life of the equipment - ANS False
T/F
Far less water than air is needed to distribute the same amount of heat, meaning that hydronic
water distribution can use piping that is much smaller than the equivalent air ductwork. -
ANS True
T/F
For practical purposes, enthalpy may be taken as the sum of sensible heat and latent heat. -
ANS True
T/F
Heat transfer is the flow of heat from one object or substance to another, and it occurs because
of a difference in pressure. - ANS False
T/F
Single-wall heat exchangers are less efficient than double-wall heat exchangers of equal size. -
ANS False
1|P a g e C o p y r i g h t © 2 0 2 5 T H E B R I G H T A L L R I G H T S R E S E R V E D
, T/F
The compressor pumps the vaporized refrigerant away from the evaporator and discharges it at
a higher pressure and temperature into the condenser. - ANS True
T/F
A dry cooling tower is a cooling tower with open water loops, allowing direct contact between
circulating water and outside air. - ANS False
T/F
Rotary pumps discharge fluids in an erratic, pulsating flow. - ANS False
T/F
The two most commonly used centrifugal pump sealing methods are the stuffing box seal and
the mechanical seal. - ANS True
T/F
There are four basic classifications of pumps. - ANS False
T/F
In air control management systems, manual air vents are recommended to be installed at
terminal units and high piping points. - ANS True
T/F
All piping expands when cooled and contracts when heated. - ANS False
T/F
A lift valve is a hydronic piping system monitoring device that is equipped with an integral check
valve designed to minimize system fluid loss when setting up to monitor pumps, heat
exchangers, valves, or other devices handling hot or cold HTF. - ANS False
2|P a g e C o p y r i g h t © 2 0 2 5 T H E B R I G H T A L L R I G H T S R E S E R V E D
PRETEST/POSTTEST. EXAM 2025
QUESTIONS AND ANSWERS
T/F
Forced-air systems cost less than hydronic systems to operate and maintain because of the
durability and long life of the equipment - ANS False
T/F
Far less water than air is needed to distribute the same amount of heat, meaning that hydronic
water distribution can use piping that is much smaller than the equivalent air ductwork. -
ANS True
T/F
For practical purposes, enthalpy may be taken as the sum of sensible heat and latent heat. -
ANS True
T/F
Heat transfer is the flow of heat from one object or substance to another, and it occurs because
of a difference in pressure. - ANS False
T/F
Single-wall heat exchangers are less efficient than double-wall heat exchangers of equal size. -
ANS False
1|P a g e C o p y r i g h t © 2 0 2 5 T H E B R I G H T A L L R I G H T S R E S E R V E D
, T/F
The compressor pumps the vaporized refrigerant away from the evaporator and discharges it at
a higher pressure and temperature into the condenser. - ANS True
T/F
A dry cooling tower is a cooling tower with open water loops, allowing direct contact between
circulating water and outside air. - ANS False
T/F
Rotary pumps discharge fluids in an erratic, pulsating flow. - ANS False
T/F
The two most commonly used centrifugal pump sealing methods are the stuffing box seal and
the mechanical seal. - ANS True
T/F
There are four basic classifications of pumps. - ANS False
T/F
In air control management systems, manual air vents are recommended to be installed at
terminal units and high piping points. - ANS True
T/F
All piping expands when cooled and contracts when heated. - ANS False
T/F
A lift valve is a hydronic piping system monitoring device that is equipped with an integral check
valve designed to minimize system fluid loss when setting up to monitor pumps, heat
exchangers, valves, or other devices handling hot or cold HTF. - ANS False
2|P a g e C o p y r i g h t © 2 0 2 5 T H E B R I G H T A L L R I G H T S R E S E R V E D
