Study Questions 2 Flashcards
A sidewall extends past a roof. Hardboard siding is water damaged a few tiles beyond where the roof and sidewall meet. The roof covering is asphalt shingles. What is the most likely cause of this condition?
A. Drip edge flashing was not installed
B. Kick out flashing
C. Siding was installed close to the roof covering
D. Underpayment was not installed
Kick out flashing was not installed
A 1/2 “ wide gap exists between the drywall and ceiling. The seller reports that this gap opens in the winter and closes in the summer. What is the most likely cause of this condition?
A. Truss up lift
B. A damaged truss bottom chord
C. Poor dry wall finishing
D. An absent gusset plate
Truss up lift
A concrete basement wall has a crack that varies in width between 3/8 inch at the floor to 1/8” 2 feet down from the wall top. What is the most likely cause for this condition?
A. The concrete dried too quickly
B. The soil is unstable under the footing
C. The wall was damaged when it was backfilled
D. The reinforcing steel is the wrong size
The soil is unstable under the footing
A notch in 12’ long 2x10 floor joist is located 5 feet from the joist end. What is the max allowed notch depth?
A. 2inches
B. 1 5/8”
C. 1 1/2”
D. 0 inches
0 inches
Racking is most likely to occur from failure to install?
A. Wall bracing
B. Floor joist bridging
C. Roof collar ties
D. Foundation wall reinforcing steel
Wall bracing
You see a ceramic tile floor with numerous cracks running through the grout and tiles. The floor system is constructed using 2x10 floor joist. Which is the most likely cause of this condition?
A. The tiles are defective
B. The floor joist blocking is absent
C.the floor joist span is to long
D. The wrong grout was used
The floor joist span was to long
You see uniform width cracks at both upper corners of all windows along one top story wall. Which is the most likely cause of the condition?
A. The windows are improperly flashed
B. The wall is improperly braced
C. The cripple studs are improperly notched
D. The ceiling joist span is to long
The wall is improperly braced
The grounding electrode system of a house
A. Provides the an alternate return path for electricity
B. Permits electricity to flow within the system
C. Protects people from electric shock
D. Prevents metal from becoming energized
Provides an alternate return path for electricity
How many energized conductors supply 240 volt, 200amp, single phase electric service
2
A circuit breaker protects against too much
A. Voltage
B. Resistance
C. Inductance
D. Current
Current
Which event is most likely to cause arc flash?
A. Lighting striking near a utility transformer
B. A short circuit in a utility transformer
C. Metal touching a energized conductor
D. A short circuit in a branch circuit
Metal touching an energized conductor
A sub panel in a detached building has melted insulation on a neutral conductor. What is the most likely cause of this condition
A. The neutral conductor is loose at the terminal bar
B. The circuit breaker is defective
C. There is no ground electrode
D. The circuit breaker ampacity is too large for the wire
The neutral conductor is loose at the terminal bar
In which location may NM cable be installed
A. In intermediate metal conduit located under the eaves
B. Attached to the bottom of floor joists in crawl space
C. On top of ceiling joists located 6 feet from attic access opening
D. In rigid metal conduit buried 12 inches below grade
On top of ceiling joist located 6 feet from attic access opening
A 2 slot receptacle has been replaced with a 3 slot receptacle in a branch circuit that does not contain an equipment grounding conductor? Which method is permitted.
A. Install an arc-fault circuit breaker on the branch circuit
B. Replace the receptacle with a GFCI receptacle
C. Run an equipment grounding conductor to a separate grounding electrode
D. Run an equipment conductor to a copper water pipe
Replace the receptacle with a GFCI receptacle
When a heat pump is operating in cooling mode the temperature of the liquid line should be a few degrees
A. Cooler than the outside air temperature
B. Warmer than the outside air temperature
C. Cooler than the inside temp
D. Warmer than inside air temp
Warmer than the outside air temperature
The effect of high humidity on an air conditioning system will be
A. An increase in temperature drop
B. A decrease in the compressor current draw
C. A decrease in the sensible load
D. An increase in the latent load
A decrease in the sensible load
What is most likely to cause greatest reduction of a air flow in a flexible air duct
A. 5/8” per foot sag in duct
B. 3/4” diameter hole in duct
C. A 90 degree bend in the duct
D. A 6 foot on center spacing of duct supports
A 90 degree bend in duct
When should combustion air NOT be drawn from inside building
A. Building has 3 stories above grade
B. Building is built using tight construction methods
C. Total BTU/h input of the appliance exceeds 160,000
D. The appliance is a direct exhaust type
Building is built using tight construction methods
The flame from a properly adjusted oil burner should be what color?
A. Blue
B. Yellow
C. Orange
D. White
White
What component is involved in controlling when a hot water boiler activates?
A. Humidistat
B. A pressuretrol
C. Aqua stat
D. High limit switch
Aqua stat
Where would an equalizer pipe be found?
A. Near steam boiler
B. Near hot water boiler
C. Common gas vent
D. Plumbing vent stack
Near steam boiler
Brown color particles under the flue collar of an induced draft gas furnace are most likely an indication of which defect?
A. Flame roll out
B. Faulty draft inducer
C. Excessively long vent connector
D. Barometric damper is stuck open
Excessively long vent connector