NHIE and AHIT Exam Questions +
Flashcards
This type of water heater ventilation system uses the natural upward movement of
airflow to filter exhaust gases up and out of the home. - ANS-atmospheric ventilation
system
The shutoff valve for a gas water heater's supply line may not be more than _____ feet
from the water heater. - ANS-6
Water heaters must be installed in a location that has a level working space that is at
least _____ inches long and _____ inches wide. - ANS-30, 30
Water heaters that use a gas fuel source may not be located in a room with _____
machinery. - ANS-air-handling
Chimney Cap - ANS-mounted above the crown, preventing water, birds, small animals,
and debris from getting inside the chimney while allowing smoke and gas to escape.
Chimney Crown - ANS-the top level of the chimney, with a sloped surface directing
much of the water away from the chimney
Spark arrestor - ANS-mesh covering that stops sparks and embers from leaving the
chimney.
Irrigation systems conserve water by the use ___ ____ or ___ ___ sensors (SMS). -
ANS-rain sensors, soil moisture
What 2 components are in a zone for a sprinkler system? - ANS-valve, sprinkler head
What is a backflow preventor? - ANS-Stops water contaminated from pesticides,
fertilizers, or other chemicals from entering the home's supply of drinking water by
allowing water to flow only one way
What are 2 possible locations for the irrigation system's shut-off valve? - ANS-below
backflow preventor or underground, in line with water supply
, Four types of well pumps: - ANS-shallow well jet, centrifugal, deep well jet, deep well
submersible
Pressure switch - ANS-senses water pressure and turns the pump off and on and is
normally mounted on piping at the water pressure tank.
Two types of septic systems: - ANS-conventional, alternative
In a conventional septic system, sludge and scum remain in the tank, and the liquid
called ____ leaves the tank. - ANS-effluent
A ___ ___ is a network of perforated pipes in trenches or beds of gravel. - ANS-drain
field
For ranges, vent hood ducts must (3): ___, ___, and ___. - ANS-terminate outside the
home, have a smooth interior surface and be constructed of (galvanized steel, stainless
steel, or copper), and be airtight
What 3 things can prevent cross connections at some equipment and fixtures: -
ANS-anti-siphon devices, vacuum breakers, air gaps
S-traps can be converted to a vented P-trap through the use of an: - ANS-air admittance
valve
This type of meter was installed in the last 20 years. They're usually compatible with
200 amp service, although there are exceptions. - ANS-Rectangular-base meters
UL stands for: - ANS-Underwriters Laboratory
This type of meter was installed 50 or more years ago. They were originally rated for 60
amps. Later generations of round-base meters were rated at 100 amps. -
ANS-Round-base meters
This type of meter was installed 40 or more years ago. They were normally rated at 100
amps, with later generations sometimes rated at 125 amps. - ANS-Square-base meters
The ____ ____ are the wires coming into the home from the utility company's meter.
They can be copper, aluminum, or copper-clad aluminum. - ANS-service conductors
Flashcards
This type of water heater ventilation system uses the natural upward movement of
airflow to filter exhaust gases up and out of the home. - ANS-atmospheric ventilation
system
The shutoff valve for a gas water heater's supply line may not be more than _____ feet
from the water heater. - ANS-6
Water heaters must be installed in a location that has a level working space that is at
least _____ inches long and _____ inches wide. - ANS-30, 30
Water heaters that use a gas fuel source may not be located in a room with _____
machinery. - ANS-air-handling
Chimney Cap - ANS-mounted above the crown, preventing water, birds, small animals,
and debris from getting inside the chimney while allowing smoke and gas to escape.
Chimney Crown - ANS-the top level of the chimney, with a sloped surface directing
much of the water away from the chimney
Spark arrestor - ANS-mesh covering that stops sparks and embers from leaving the
chimney.
Irrigation systems conserve water by the use ___ ____ or ___ ___ sensors (SMS). -
ANS-rain sensors, soil moisture
What 2 components are in a zone for a sprinkler system? - ANS-valve, sprinkler head
What is a backflow preventor? - ANS-Stops water contaminated from pesticides,
fertilizers, or other chemicals from entering the home's supply of drinking water by
allowing water to flow only one way
What are 2 possible locations for the irrigation system's shut-off valve? - ANS-below
backflow preventor or underground, in line with water supply
, Four types of well pumps: - ANS-shallow well jet, centrifugal, deep well jet, deep well
submersible
Pressure switch - ANS-senses water pressure and turns the pump off and on and is
normally mounted on piping at the water pressure tank.
Two types of septic systems: - ANS-conventional, alternative
In a conventional septic system, sludge and scum remain in the tank, and the liquid
called ____ leaves the tank. - ANS-effluent
A ___ ___ is a network of perforated pipes in trenches or beds of gravel. - ANS-drain
field
For ranges, vent hood ducts must (3): ___, ___, and ___. - ANS-terminate outside the
home, have a smooth interior surface and be constructed of (galvanized steel, stainless
steel, or copper), and be airtight
What 3 things can prevent cross connections at some equipment and fixtures: -
ANS-anti-siphon devices, vacuum breakers, air gaps
S-traps can be converted to a vented P-trap through the use of an: - ANS-air admittance
valve
This type of meter was installed in the last 20 years. They're usually compatible with
200 amp service, although there are exceptions. - ANS-Rectangular-base meters
UL stands for: - ANS-Underwriters Laboratory
This type of meter was installed 50 or more years ago. They were originally rated for 60
amps. Later generations of round-base meters were rated at 100 amps. -
ANS-Round-base meters
This type of meter was installed 40 or more years ago. They were normally rated at 100
amps, with later generations sometimes rated at 125 amps. - ANS-Square-base meters
The ____ ____ are the wires coming into the home from the utility company's meter.
They can be copper, aluminum, or copper-clad aluminum. - ANS-service conductors
