Module 2 Missed Questions 3 Flashcards
The following is accurate information on age & capacity data (national averages)
a. Exterior condenser/compressor units typically last about 10 years, air source heat pumps last about 8-10 years, and geothermal heat pump equipment 10-15 years
b. Exterior condenser/compressor units typically last about 15 years, air source heat pumps last about 12-14 years, and geothermal heat pump equipment 20-25 years
c. Exterior condenser/compressor units typically last about 15 years, air source heat pumps last about 8-10 years, and geothermal heat pump equipment 20-25 years
Exterior condenser/compressor units typically last about 15 years, air source heat pumps last about 12-14 years, and geothermal heat pump equipment 20-25 years
Which of the following is not an appropriate action when a line-set is frozen in an A/C unit you are inspecting?
a. The unit should be turned off immediately
b. It is not appropriate for you to share this information with any real estate agents
c. Ask the client permission to talk to the current owner about this
It is not appropriate for you to share this information with any real estate agents
A single-wall vent connector at the furnace needs at least:
a. Six inches of clearance from combustibles
b. Eight inches from combustibles
c. Ten inches from combustibles
Six inches of clearance from combustibles
When you arrive at the home, the unit is off. What is the minimum amount of time the unit should operate before testing temperature drop?
a. 60 minutes
b. 30 minutes
c. 5-10 minutes
5-10 minutes
The 2-inch diameter of ductwork in a hi-V system typically needs a minimum length of __ & a maximum length of __. It needs to be at least __ long to act as a muffler.
a. 3 ft, 15 ft, 3 ft
b. 4 ft, 20 ft, 4 ft
c. 6 ft, 30 ft, 6 ft
6 ft, 30 ft, 6ft
When inspecting a heat pump which of the following is not a concern?
a. The owner uses the emergency heat setting instead of running the heat pump.
b. The heat pump is installed on the rooftop
c. The heat pump is located directly below a roof ridge
The owner uses the emergency heat setting instead of running the heat pump.
An unrestricted heat pump unit can still provide some heat down to __ below 0.
a. 30 degrees
b. 20 degrees
c. 10 degrees
10 degrees
Life expectancy of a geothermal unit is approximately __.
a. 10-15 years
b. 20-25 years
c. 30 + years
20-25 years
The maximum supply air temp from a geothermal system in heating mode is about 125 degrees, but more typically, it operates at somewhere between _ and _ degrees.
a. 70 and 75
b. 85 and 95
c. 95 and 100
85 and 95
A service lateral must be protected by either a metal conduit or a schedule __ to a depth of __ below grade.
a. 60 RNC, 12 in
b. 70 RNC, 12 in
c. 80 RNC, 18 in
80 RNC, 18 in
In front of any panel or disconnect, there needs to be __ clear minimum measured from the outer cover of the panel and __ clear space side to side for the panel.
a. 36 and 30
b. 30 and 24
c. 24 and 18
36 and 30
On average, a silicon-based photovoltaic cell produces about__ at half volt and __ amps.
a. 5 watts, 10 amps
b. 5 watts, 15 amps
c. 10 watts, 15 amps
5 watts, 10 amps
Based on the NFPA, using what they tell us is unconfined space, calculate the required cubic feet for a 10,000 BTU furnace with a 34,000 BTU water heater right next to it.
a. 5700 cubic ft
b. 67oo cubic ft
c. 7600 cubic ft
6700 cubic ft
When performing a visual check of gauges for a circulated boiler, the pressure on the gauge should read about __ at room temperature
a. 6 pounds
b. 10 pounds
c. 12 pounds
12 pounds
When inspecting hot steam boilers for basic operation sequences, it is recommended to let the heating equipment operate for at least __.
a. 5 min
b. 12 min
c. 15 min
5 min
Unlisted, meaning older wood stoves, need at least __ of clearance to combustibles, even with the best clearance reduction systems as specified by NFPA 211.
a. 6 in
b. 10 in
c. 12 in
12 in
Which of the following plumbing supply piping is for radiant heat only?
a. CPVC
b. PC
c. HePEX
HePEX
For tankless water heaters, NFPA 54 requires two openings with __ net free area of air per 1,000 btu/hr of gas input.
a. 1/2 in
b. 1 in
c. 2 in
1 in
Steel plate protection is required in a wall if the piping is less than __ from the face of framing
a. 1/2 in
b. 3/4 in
c. 1 in
1 in
When inspecting crawl spaces in a home and identifying rotted wood or materials, do not use the word rot. The correct terminology for your report is __
a. Wood destroying organisms
b. Deteriorated wood or materials
c. Eroded wood or materials
Wood destroying organisms
If the relative humidity in a crawl space is consistently above __ then dehumidification is recommended
a. 45%
b. 50%
c. 55%
55%
Which type of insulation can be found in older homes, is not used in the U.S> anymore, and has a low R-value of 2.13?
a. Fiberglass
b. Vermiculite
c. Cellulose
Vermiculite
Polyisocyanurate insulation is foil-faced making it a good thermal radiant barrier, and has an R-value of __ per inch
a. 4.2
b. 5.2
c.7.2
7.2
Low density spray foam insulation’s R-value starts at __ per inch
a. 3.6
b. 4.6
c. 5.6
3.6
What is the “typical” efficiency rating for permanently-split capacitor motors?
a. 75%
b. 85%
c. 90%
90%
The ASHRA say that living area of a home should be ventilated at a rate of __ air change per hour, or __ per minute per person, whichever is greater. Depending on the climate, that is a complete change of air about every three hours.
a. 0.27, 12 cubic feet
b. 0.35, 15 cubic feet
c. .037, 17 cubic feet
0.35, 15 cubic feet
Which type of ventilation system has two fans and two duct systems and is pretty much the dominant type of system available today?
a. closed ventilation system
b. supply ventilation system
c. balanced ventilation system
balanced ventilation systems
Some pool codes require one skimmer for every __ of pool surface water.
a. 200 sqft
b. 500 sqft
c. 600 sqft
500 sqft
For pool PVC piping that is running above the ground and under a deck, the pipes will require support every __
a. 6 to 8 feet
b. 7 to 9 feet
c. 5 to 7 feet
6 to 8 feet
Which of the following irrigation budget calculation formulas is used for turf grass inches?
a. (ETo x Kc)/DU = (5.0 x 0.8)/0.7 = 5.7in x 50% = 2.9 in
b. (ETo x Kc)/DU = (5.0 x 0.8)/0.7 = 5.7in x 50% = 2.5 in
c. (ETo x PF)/DU = (5.0 x 0.8)/0.8 = 3.1in x 40% = 2.9 in
(ETo x Kc)/DU = (5.0 x 0.8)/0.7 = 5.7in x 50% = 2.9 in
Which of the following are NOT considered physical problems with irrigation systems?
a. broken heads or nozzles
b. high head drainage
c. sunken heads
high head drainage
What is the correct formula for calculating the average precipitation rate?
a. PR(IN/HR) = Average (GPM) per head divided by Average head spacing in square feet
PR(IN/HR) = Average (GPM) per head divided by Average head spacing in square feet
Record individual catch can volumes in __ and the station(s) test run time in minutes
a. kiloliters
b. millimeters
c. centimeters
millimeters
What is not a critical question you consider to the inspection of outbuildings?
a. do they affect safely?
b. Is it performing its intended function?
c. Does it impact the value of the home?
Does it impact the value of the home?
Which type of well is/are also referred to as an unconsolidated well?
a. water table
b. unconfined aquifer
c. all of the above
unconfined aquifer
What is the recommendation for a septic system time-line for inspecting to ensure that it is not contaminating the groundwater and a private well?
a. biannually
b. annually
c. every 1-2 years
1-2 years
Which type of iron present in wells should be identified for optimum treatment?
a. Ferric
b. Ferrous
c. Ferrous Sulfate
Ferric
Which type of septic tanks are becoming the standard and may be mandatory depending on the authority having jurisdiction?
a. plastic tanks
b. fiberglass tanks
c. multi-section tanks
multi-section tanks
Which type of drain field systems lends itself to have one of the highest surface areas for leeching or drainage allowing for a smaller drain field?
a. multi-pipes
b. rockless
c. dry well
multi-pipes
For horizontal placement, surface water including lakes, streams, rivers, ponds and the ocean set backs and placement of the drain field are “typically”__.
a. 50 to 75 ft
b. 75 to 100 ft
c. 100 to 125 ft
75 to 100 ft
What is the most common problem with septic tanks?
a. clogged filter
b. failed pump
c. leaks associated with failure in the wall or a pipe fitting attached to the wall
leaks associated with failure in the wall or a pipe fitting attached to the wall
On average, a typical anaerobic, gravity fed septic system costs about __ to replace.
a. 6000
b. 6500
c. 7500
7500
Which of the following in NOT something the electric utility company owns nor is responsible for maintenance?
a. service drop
b. service mast
c. the meter
service mast
In what areas can Rebar be used for grounding?
a. ground is soft
b. ground is rocky
c. ground is extremely hard and rocky
ground is extremely hard and rocky
Which of the following is NOT accurate regarding service drop/lateral service masts?
a. IMC and RMC are both galvanized steel but are not interchangeable
b. rigid nonmetallic conduit
c. rigid metal conduit
IMC and RMC are both galvanized steel but are not interchangeable
A double wall B vent requires a minimum of __ if clearance
a. 3 inches
b. 1 inch
c. 2 inches
1 inch
Which type of boiler uses a circulating pump, usually has a tridicator, and uses virtually no make up water?
a. circulated
b. convection
c. hydronic
circulated
Gravity system boilers tend to run about__.
a. 120 degrees
b. 150 degrees
c. 180 degrees
180 degrees
Which type of plumbing piping was in use as early as the 1960 & requires a solvent weld?
a. Chlorinated Polyvinyl Chloride
b. PEX
c. Polybutylene
Chlorinated Polyvinyl Chloride
Which type of plumbing piping is commonly used for private wells and is for cold water use only?
a. PEX
b. High density polyethylene
c. Polybutylene
High density polyethylene
