National Exam Missed Questions (1) Flashcards
Gas-fired heat exchangers most often fail from
a. low temps
b. lack of use
c. improper gas pressure
d. rust & metal fatigue
rust & metal fatigue
Water hammer can occur as a result of
a. lack of air chambers
b. faulty shutoff valve
c. loose piping
d. low static water pressure
Lack of air chambers
Which has the least effect on the deflection of a dimension lumber floor system
a. joist width
b. joist grade
c. joist species
d. joist spacing
joist width
If a system designed for use with natural gas is supplied with propane gas
a. no changes are needed for equipment to function properly
b. flame will be too high unless a smaller orifice is installed
c. flame will be too low unless a larger orifice is installed
d. gas regulator & valve must be replaced
flame will be too high unless a smaller orifice is installed
If a poured concrete foundation has an unusually large number of vertical cracks, each no wider than 1/32 inch, the cause is likely to
a. differential settlement from adverse drainage conditions
b. excessive amounts of aggregate in the concrete mix
c. settlement from compaction of soils below the footings
d. shrinkage of the concrete from excess water at the time of pouring
settlement from compaction of soils below the footings
During a summertime inspection, what could indicate chronic condensation problems in an attic?
a. the attic is very warm
b. there is no vapor retarder on the insulation
c. they are gray/black stains on the north side roof sheathing
d. there are mildew stains on the bathroom ceilings
there are gray/black stains on the north side roof sheathing
Knob & tube wiring may be acceptable if
a. the home is insulated with fiberglass
b. circuit breaker system is proper
c. not covered by insulation
d. fuse system is still in place
not covered by insulation
The maximum acceptable variation in riser heights within a flight of stairs is
a. 1/2”
b. 3/8”
c. 3/4”
d. 1”
3/8”
While conducting an inspection, your ladder falls over and breaks the homeowner’s priceless Ming vase. What type of insurance will cover the replacement?
a. general liability
b. homeowners
c. errors & omissions
d. bonding
homeowners
Bonding of appliances can be confirmed by using a/an
a. volt meter
b. receptacle tester
c. ohm meter
d. ammeter
ohm meter
Buckling in horizontal vinyl siding is generally caused by
a. reflected sunlight
b. improper fastening
c. condensation in walls
d. improper house wrap
improper fastening
At what level would water pressure within a single-family dwelling begin to be considered excessive & require correction?
a. 60 psi
b. 80 psi
c. 100 psi
d. 120 psi
80 psi
A ground fault circuit interrupter (GFCI) is a safety device that
a. disconnects power when the grounding to the outlet is faulty
b. detects moisture & disconnects power in wet locations
c. disconnects power when sensing current leakage to ground
d. protects against electrical surges & voltage spikes
disconnects power when sensing current leakage to ground
Brick chimneys on older properties with oil heat sometimes curve above the roof line, with no visible cracks. Which is a possible cause
a. settlement of chimney footing
b. expansion of mortar
c. absence of a cricket flashing at the roof
d. lack of a rain cap on the flue
expansion of mortar
On a hillside house with foundation drain systems
a. rock-filled foundation drains are not allowed on the interior side of the foundation
b. all foundation drain systems must be in perforated plastic piping extending to daylight
c. the foundation drain systems collect water passing laterally through the slope
all foundation drain systems must be in perforated plastic piping extending to daylight
A ground fault occurs when
a. too many devices are used on a circuit
b. a hot conductor touches another hot conductor
c. a hot conductor touches a grounded surface or grounding conductor
a hot conductor touches a grounded surface or grounding conductor
Inspecting a very old country house, gurgling sound is heard from the tub drain when the toilet is flushed. Which of the following explanation for the sound?
a. Water discharging from the toilet is pulling water from the tub trap
b. the tub drain is partially blocked
c. The branch drain is partially blocked downstream from the tub
Water discharging from the toilet is pulling water from the tub trap
Condensation between glass layers of thermal pane windows indicates the need to
a. repair or replace seal
b. repair or clean breather holes
c. replace glazing sash or window
replace glazing sash or window
Capillary tubes are part of the
a. evaporator coil
b. heat exchanger
c. condenser coil
d. compressor coil
evaporator coil
The device used to detect the electrical current to the electric heater coil is called
a. ammeter
b. ohm meter
c. volt meter
ammeter
The inclusion of photographs in home inspection reports is
a. optional
b. mandatory
c. illegal
optional
Overhead electrical service should be a minimum of how many feet above a flat roof subject to foot traffic
a. 4 ft
b. 8 ft
c. 10 ft
10 ft
Where might you expect to find a window with safety glass
a. less than 18” above floor
b. less than 24” above floor
above kitchen sink
less than 18” above floor
A newly built ventilated crawl space with a vapor retarder is required to have one square foot of net ventilation opening per:
a. 150 sqft of crawl space
b. 1200 sqft of crawl space
c. 1500 sqft of crawl space
1500 sqft of crawl space
A poured concrete retaining wall with weep holes is rotating. What is the most likely reason for the rotation?
a. There is no gravel behind wall
b. wall is cantilevered
c. wall has no dead man anchors
There is no gravel behind wall
A concrete block basement wall has significant efflorescence. What is the most likely reason for this condition?
a. cinder content in blocks is too high
b. the blocks are not grounded
c. soil has settled at the foundation
the blocks are not grouted
A movement joint should be installed in brick veneer
a. at support by different structural components
b. each floor level
c. above each soldier course
at support by different structural components
What is the most appropriate fastener material for a slate shingle roof covering?
a. zinc nails
b. hot-dipped galvanized nails
c. copper nails
copper nails
