National Home Inspector Exam Prep Questions and
Graded Answers.
Noncontact moisture meter - if water is filtration is suspected behind a finish surface.
What would be the best choice to verify dampness
Gas, fire, furnaces, heat exchanges most often fail from - Rust and fatigue
Relative humidity is expressed as - percentage
Connections of dissimilar metal in a plumbing system, such as galvanized steel pipe and copper
pipe, will usually cause - Electrolysis
An undergrounded receptacle may be replaced by a ground, fault circuit interrupter installed -
Upstream from the receptacle
Circuit breakers - protect the wire from an electrical overload
In a force air heating system, containing a split system air condition and humidifier,humidity is
reduced by - Condensation of the evaporator coil
Waterhammer can occur as a result of - A lack of air chambers
If a system designed for use with natural gas is supplied with propane gas - The flame will
be too high, unless a smaller orifice is installed
When looking at the exterior wall of a 60 year old brick masonry house with a gable roof, you
notice a horizontal crack in the mortar and outward brick displacement along the gutter edge of
the roof. The displacement is greatest at the center of the top 3 courses of brick This condition is
MOST likely caused by. - Improper ceiling joist installation
,You inspect a wood framed cantilevered balcony off of a 2nd story bedroom you find a
significant wood deterioration, of all cantilever Joists at the bearing point of the house you
should - Notify the occupants of the significant hazard advise immediate repair to both the
occupant and the client in the report
When a cooling unit is located in an attic where damage may result from condensate overflow -
An auxiliary condensate drain system is required
If poured concrete foundation has an unusually large amount of vertical cracks, each, no wider
than 1/32 inch cause likely to be - Shrinkage of the concrete from access water at the time
of pouring
Where should squash blocks web blocking, be found in the wood joist floor system - At
bearing ends and low bearing walls above, with support girders below
Columns typically support - Girders
In new construction the minimum overhead electrical service clearances are - walkway:
10 feet, roadway: 18 feet, deck: 10 feet
During a summertime inspection, we could indicate chronic condensation problems in a attic -
There are no vapor retarder on the insulation
Ice damming at the eaves may be caused by - In adequate attic insulation
The purpose of flashing on a roof is to - Shed water onto roofing materials
While inspecting a heat pump is the cooling mode you measure a 28°F temperature differential
between the interior supply and return air you should suspect: - A dirty filter
, What is the minimum electric service drop clearance from a residential driveway? - 12
feet
Roof truss uplift can cause cracks to form - At interior wall/ceiling intersections
When measuring the temperature drop across the evaporator in a central air conditioning system
a properly running unit on a humid summer day should read between - 15 and 25 degrees
Fahrenheit
Knob and tube wiring may be acceptable if - Not covered by Installation
The maximum acceptable variation in a riser height within a flight of stairs is - 3/8 inch
While conducting an inspection, your ladder falls over and breaks the homeowners priceless
vase. What type of insurance is needed to cover the replacement? - General liability
The minimum reliable, separation between a masonry chimney and combustible materials -
2 inches
Bonding of appliances can be confirmed by using in - Ohm meter
Service panel enclosure doors is required to open at least - 90°
What is a required element of a contract? - consideration
Buckling in a horizontal vinyl siding is generally caused by? - Improper fastening
At what level would water pressure with a single-family dwelling began to be considered
excessive in require correction - 80 psi
Graded Answers.
Noncontact moisture meter - if water is filtration is suspected behind a finish surface.
What would be the best choice to verify dampness
Gas, fire, furnaces, heat exchanges most often fail from - Rust and fatigue
Relative humidity is expressed as - percentage
Connections of dissimilar metal in a plumbing system, such as galvanized steel pipe and copper
pipe, will usually cause - Electrolysis
An undergrounded receptacle may be replaced by a ground, fault circuit interrupter installed -
Upstream from the receptacle
Circuit breakers - protect the wire from an electrical overload
In a force air heating system, containing a split system air condition and humidifier,humidity is
reduced by - Condensation of the evaporator coil
Waterhammer can occur as a result of - A lack of air chambers
If a system designed for use with natural gas is supplied with propane gas - The flame will
be too high, unless a smaller orifice is installed
When looking at the exterior wall of a 60 year old brick masonry house with a gable roof, you
notice a horizontal crack in the mortar and outward brick displacement along the gutter edge of
the roof. The displacement is greatest at the center of the top 3 courses of brick This condition is
MOST likely caused by. - Improper ceiling joist installation
,You inspect a wood framed cantilevered balcony off of a 2nd story bedroom you find a
significant wood deterioration, of all cantilever Joists at the bearing point of the house you
should - Notify the occupants of the significant hazard advise immediate repair to both the
occupant and the client in the report
When a cooling unit is located in an attic where damage may result from condensate overflow -
An auxiliary condensate drain system is required
If poured concrete foundation has an unusually large amount of vertical cracks, each, no wider
than 1/32 inch cause likely to be - Shrinkage of the concrete from access water at the time
of pouring
Where should squash blocks web blocking, be found in the wood joist floor system - At
bearing ends and low bearing walls above, with support girders below
Columns typically support - Girders
In new construction the minimum overhead electrical service clearances are - walkway:
10 feet, roadway: 18 feet, deck: 10 feet
During a summertime inspection, we could indicate chronic condensation problems in a attic -
There are no vapor retarder on the insulation
Ice damming at the eaves may be caused by - In adequate attic insulation
The purpose of flashing on a roof is to - Shed water onto roofing materials
While inspecting a heat pump is the cooling mode you measure a 28°F temperature differential
between the interior supply and return air you should suspect: - A dirty filter
, What is the minimum electric service drop clearance from a residential driveway? - 12
feet
Roof truss uplift can cause cracks to form - At interior wall/ceiling intersections
When measuring the temperature drop across the evaporator in a central air conditioning system
a properly running unit on a humid summer day should read between - 15 and 25 degrees
Fahrenheit
Knob and tube wiring may be acceptable if - Not covered by Installation
The maximum acceptable variation in a riser height within a flight of stairs is - 3/8 inch
While conducting an inspection, your ladder falls over and breaks the homeowners priceless
vase. What type of insurance is needed to cover the replacement? - General liability
The minimum reliable, separation between a masonry chimney and combustible materials -
2 inches
Bonding of appliances can be confirmed by using in - Ohm meter
Service panel enclosure doors is required to open at least - 90°
What is a required element of a contract? - consideration
Buckling in a horizontal vinyl siding is generally caused by? - Improper fastening
At what level would water pressure with a single-family dwelling began to be considered
excessive in require correction - 80 psi
