Module 2 Missed Questions 4 Flashcards
Which of the following is a correct method for determining capacity?
A 1999 10 SEER unit. The RLA is 18.0, divided by 6 equals 3 tons.
A 1999 10 SEER unit. The RLA is 18.0, divided by 3 equals 6 tons.
A 1999 10 SEER unit. The RLA is 12.0, divided by 4 equals 3 tons.
A 1999 10 SEER unit. The RLA is 18.0, divided by 5 equals 3.6 tons.
A 1999 10 SEER unit. The RLA is 18.0, divided by 8 equals 2.25 tons.
A 1999 10 SEER unit. The RLA is 18.0, divided by 6 equals 3 tons.
What is the outdoor temperature operating parameters for inspecting air conditioning?
Do not operate if the outdoor temperature has been below 23 degrees within the last 48 hours or the power to the unit has been turned off.
Do not operate if the outdoor temperature has been below 45 degrees within the last 24 hours or the power to the unit has been turned off.
Do not operate if the outdoor temperature has been below 50 degrees within the last 48 hours or the power to the unit has been turned off.
Do not operate if the outdoor temperature has been below 60 degrees within the last 24 hours or the power to the unit has been turned off.
Do not operate if the outdoor temperature has been below 65 degrees within the last 48 hours or the power to the unit has been turned off.
Do not operate if the outdoor temperature has been below 60 degrees within the last 24 hours or the power to the unit has been turned off.
All upflow exterior air conditioning units, no matter who the manufacturer is, require ________.
4 feet clear at the top and 8 inches at the sides.
4 feet clear at the top and 12 inches at the sides.
5 feet clear at the top and 8 inches at the sides.
5 feet clear at the top and 12 inches at the sides
6 feet clear at the top and 12 inches at the sides.
5 feet clear at the top and 12 inches at the sides.
Which of the following is NOT true of the operation of an unrestricted heat pump?
When the defrost cycle is complete, the system switches back to heating
Steam rising from the outdoor unit for a few minutes is normal.
At low temperatures, the heat pump is not able to defrost itself
Supplemental heat operates during defrost mode.
You shouldn’t run a heat pump when the line is frozen.
At low temperatures, the heat pump is not able to defrost itself
What is the most common geothermal heat pump installation?
The package unit
The split unit
The hydronic unit
A water-to-water unit
All types of geothermal heat pumps are equally common.
The package unit
When inspecting a geothermal heat pump, the temperature rise (heating) or warm air should be ___________.
15-20 degrees F
15-25 degrees F
15-30 degrees F
20-35 degrees F
15-35 degrees F
20-35 degrees F
Where the ground is extremely hard, rocky, or has very poor conductivity, Ufer grounding electrodes are used and must be
A minimum of 20 feet of ¼ inch of rebar or #4 copper wire.
A minimum of 20 feet of ½ inch of rebar or #4 copper wire.
A minimum of 15 feet of ¼ inch of rebar or #4 copper wire.
A minimum of 15 feet of ¼ inch of rebar or #4 copper wire.
A minimum of 10 feet of ¼ inch of rebar or #4 copper wire.
A minimum of 20 feet of ½ inch of rebar or #4 copper wire.
How many deaths per year are attributed to the lack of tamper resistant outlets for child safety?
6-10
8-10
10-12
12-15
15-18
10-12
What year did the NEC® include grounding and polarity for ALL 15- & 20-amp receptacles?
1951
1956
1959
1962
1965
1962
Due to changes in the 2008 NEC®, what things will you begin to see as these changes are adopted?
All grounding electrodes present must be bonded together with the same size wire as a grounding electrode conductor.
Metal water pipe, a supplemental electrode is always required.
All grounding electrodes present must be a minimum of 6 feet apart.
All grounding electrodes present must be bonded together.
All of the above.
All of the above.
Which of the following is NOT true in electrical theory?
Breakers (or fuses) only open automatically with too much current (amps).
Completing the circuit at the Earth is a low resistance path and often does not allow enough current flow to trip a breaker.
Completing a circuit at the transformer is a low resistance wire path, but usually allows enough current flow to trip a breaker.
Grounding conductors provide stray electricity with a path home (to earth or transformer.
Completing the circuit at the Earth is a high resistance path and often does not allow enough current flow to trip a breaker.
Completing the circuit at the Earth is a low resistance path and often does not allow enough current flow to trip a breaker.
What is considered a “typical” watts’ range for a PV panel rated at 12-, 24-, 36-, 48-volts?
120 to 240 watts
140 to 300 watts
160 to 320 watts
180 to 340 watts
200 to 360
180 to 340 watts
When looking for proper clearances from combustibles and servicing for forced air furnaces, it needs to be a minimum of _____ away from an unenclosed oil tank.
3 feet
4 feet
5 feet
6 feet
7 feet
5 feet
Which of the following should be inspected for basic gas operation on combustion furnace systems, but are beyond the SOP?
Short cycling and back drafting
Ignition pop or flame roll-out and carbon monoxide unusual
Anything unusual (operation or sound) and gas leaks
Gas leaks and carbon monoxide
Carbon monoxide and back drafting
Gas leaks and carbon monoxide
What should the steam boiler sight or gauge glass read for normal operating level at room temperature?
½ to ⅔ full
⅓ full or less
⅓ full or more
½ to ¾ full
¾ full
½ to ⅔ full
A steam boiler will show _____ pounds when cold and less than _____ pounds of pressure when operating.
0, 1
0, 2
1, 1
1, 2
1, 3
0, 2
Which of the following is NOT accurate related to circulated boilers?
Operating temperatures are 140 to 160 degrees
12 to 15 psi is normal operating pressure
The relief valve blows at 20 psi (Correct Answer)
An “aquastat” controls water temperature
All of the above are related to cirulcated boilers.
The relief valve blows at 20 psi
An unlisted stove needs _____ clearance to combustibles or 12 to 24 inches clearance to combustibles if it has an approved clearance reduction system which comes directly from a chart in NFPA 211, specifically chart 12.6.2.1, or as per local requirements.
12 inches
20 inches
24 inches
32 inches
36 inches
36 inches
Gas fireplaces and inserts burn at 350 degrees Fahrenheit and use what vent class?
Standard A
Standard B
Standard
Standard PL
Standard D
Standard B
Waste piping needs to slope _____ for waste piping that is 3 inches diameter or less and for over 3 inches diameter_____.
⅛ inch per foot, ¼ inch per foot
¼ inch per foot, ⅛ inch per foot
⅛ ich per foot, ½ inch per foot
¼ inch per foot, ½ inch per foot
½ inch per foot, ¼ inch per foot
¼ inch per foot, ⅛ inch per foot
Which of the following is NOT accurate for inspecting kitchen fixtures?
Do a visual check of the disposal for any obstructions before running it.
Operate the disposal with running water.
Turn the dishwasher on to make sure it is operational.
You do not need to run the dishwasher through an entire cycle. (Correct Answer)
Check any utility and bar sinks.
You do not need to run the dishwasher through an entire cycle.
When reporting on the age of a storage tank combustion water heater, report that the water heater is near the end of its service life at _______ or older.
8 years
10 years
12 years
13 years
15 years
10 years
Which of the following gas piping material must be labeled for gas?
Black iron
Galvanized
Aluminum
Copper
Brass
Copper
Perforated sheet metal plate vent coverings must be at least _____ thick. Expanded sheet metal plate vent coverings must be at least_____ inches thick.
0.07 inch, 0.035 inch
0.07 inch, 0.047 inch
0.047 inch, 0.035 inch
0.07 inch, 1 inch
0.07 inch, 1 ½
0.07 inch, 0.047 inch
To meet the attic exhaust fan requirements, the exhaust vent has to be within at least _____ of the peak or the ridge of the roof.
1 foot
1 ½ foot
2 feet
2 ½ feet
3 feet
3 feet
High density spray foam insulation’s R-value starts at _____ per inch, while medium density spray foam insulation’s R-value starts at _____ per inch.
3.5, 3.7
4.5, 4.7
5.5, 5.7
6.5, 6.7
7.5, 7.7
5.5, 5.7
Low density spray foam insulation’s R-value starts at _____ per inch.
2.6
3.6
4.6
5.6
6.6
3.6
When talking about the use of ultraviolet light technology used for air filtration in HVAC systems, which type of ultraviolet (UV) light is the most dangerous type of UV radiation and is blocked by our ozone layer?
UVA
UVB
UVC
UVD
UVE
UVC
Say you are operating 4 burners capable of output of around 10,000 BTUs. Running all burners at the same time, for an intermittent system what is the CFM?
100
200
300
400
500
400
Which type of ventilation system is appropriate for all climates?
Balanced ventilation systems
Closed ventilation systems
Open ventilation systems
Supply ventilation systems
Exhaust ventilation systems
Balanced ventilation systems
According to the Equipotential Bonding Perimeter Surfaces Section 680.23(B)(2). An equipotential bonding grid must extend ___ beyond the inside wall of the pool, outdoor spa, or outdoor hot tub.
18 inches
2 feet
3 feet
4 feet
5 feet
3 feet
Three-port valves used in pools and spa systems should be lubricated every ________.
3 months
4 months
5 months
6 months
Annually
6 months
Which of the following irrigation budget calculation formulas is used for bedding inches?
(ETo x Kc)/DU = (5.0 x 0.8)/0.7 = 5.7 inches x 50% = 2.9 inches
(ETo x Kc)/DU = (5.0 x 0.8)/0.7 = 5.7 inches x 50% = 2.5 inches
(ETo x PF)/DU = (5.0 x 0.5)/0.8 = 3.1 inches x 40% = 2.3 inches
(ETo x PF)/DU = (5.0 x 0.5)/0.8 = 3.1 inches x 40% = 1.2 inches
(ETo x PF)/DU = (5.0 x 1.0)/0.6 = 8.3 inches x 10% = 0.8 inches
(ETo x PF)/DU = (5.0 x 1.0)/0.6 = 8.3 inches x 10% = 0.8 inches
What are the two most important irrigation system performance characteristics used to calculate station run time and how evenly water is applied to all areas of the landscape?
Precipitation rates (PR) and Distribution Uniformity (DU)
Precipitation rates (PR) and Catch Can Tests
Distribution Uniformity (DU) and Catch Can Tests
Gallons Per Hour (GPH) and Gallons Per Minute (GPM)
Irrigation Ratio and Runoff
Precipitation rates (PR) and Distribution Uniformity (DU)
Dug wells have a large diameter and are approximately __________ deep.
5 feet to 20 feet
5 feet to 30 feet
10 to 20 feet
10 to 25 feet
10 to 30 feet
10 to 30 feet
Which well component is the first line of defense in preventing pollutants from penetrating the drinking water system?
Well screens
Well heads
Well casing
Pressure tank
Well casing
Well heads
How many deaths annually are attributed to radon from household water?
30 to 1,000
30 to 1,200
30 to 1,500
30 to 1,800
30 to 2,000
30 to 1,800
The Federal Housing Authority (FHA) inspection requires that shared wells have a valve on each dwelling service line and serves no more than _____ living units or properties.
2
3
4
5
6
4
Drain field size is determined by multiple factors. Which of the following is NOT a determining factor?
Total load on the system
Federal Housing Authority regulations
Soil type
Systems utilized
Local authorities having jurisdiction
Federal Housing Authority regulations
Which type of drain field system requires pumps to pump the effluent from typically a pump tank?
Pipe and gravel
Chambers
Rockless
Mound
Dry well
Mound
Which of the following is the correct formula for calculating a rectangular septic tank? Length x Width X Depth in feet x _____________.
5 gallons
7 gallons
7.5 gallons
8 gallons
8.5 gallons
7.5 gallons
When inspecting septic systems, it is important to be aware that the National Electrical Code (NEC) and many local authority having jurisdiction (LAHJ) dictate that any power source that is within _______ of a possible source if water needs to be GFCI protected.
4 feet
6 feet
8 feet
10 feet
12 feet
6 feet
What has the purpose to prevent moisture from running into the service mast?
The drip loop
The weatherhead
The wire gauges
The fusebox
None of the above
The drip loop
A Romex cable located in an attic or loft within _______ of a hatch/opening must be protected.
4 feet
5 feet
6 feet
7 feet
8 feet
6 feet
Which of the following is NOT true about inspecting electrical?
We do not do code inspections
NEC is all about safety
Building codes affect what we see more than NEC
NEC revisions must be adopted by the local authority having jurisdiction before they take affect
Authorities having jurisdiction (AJH) may add their own amendments
Building codes affect what we see more than NEC
Which of the following is NOT true of how electricity is delivered?
A complete circuit must include a load
A load can be a motor or lamp
The load is necessary to convert the energy delivered by the current into work
A circuit without a load results in a “short circuit”
The electrons perform the work
The electrons perform the work
What is the correct information in the definition of volts?
The amount of quantity of the electrical current
The pressure behind the current
It is measured in pounds per square meter (psm)
The rate of work or power produced by the energy in the current
Is the resistance to current flow of wires or other conductors in the circuit.
The pressure behind the current
If we have 10 amps of current flowing, the temperature of the conductor rises to?
5 degree celsius
10 degrees celsius
15 degrees celsius
20 degrees celsius
30 degrees celsius
10 degrees celsius
Which type of electrical cable requires a special weatherhead?
Service entrance (SE) cable
Intermediate metal conduit (IMC)
Rigid metal conduit (RMC)
Rigid nonmetallic conduit (RNC)
Stiff gray PVC conduit
Service entrance (SE) cable
What is NOT true about mid-efficiency furnaces?
There are lots of mid-efficiency units
They have draft inducer fans
They efficiency rate if about 70% to 75%
They don’t convect out very well
They feature the monoport or in-shot burner
They efficiency rate if about 70% to 75%
A furnace in an attic should not be more than ______ from the attic access hatch?
10 feet
15 feet
18 feet
20 feet
24 feet
20 feet
How much cubic feet of air is required for every cubic foot of gas burned in a propane furnace?
Up to 20 cubic feet
Up to 24 cubic feet
Up to 26 cubic feet
Up to 29 cubic feet
Up to 30 cubic feet
Up to 29 cubic feet
For fuel oil furnaces, a single wall vent requires a minimum of ________ of clearance all the way around.
5 inches
6 inches
7 inches
8 inches
9 inches
9 inches
Which boiler type is no longer installed and depends on convection of hot water to move through pipes?
Steam
Convection
Circulated
Gravity type
Hydronic or wet boilers
Gravity type
Which of the following is NOT a circulated boiler feature?
Has a pressure reducing valve
Should have a backflow preventer
Has a compression tank located near the boiler
Has multiple pumps
Has one zone valve for a single thermostat
Has one zone valve for a single thermostat
Which type of plumbing piping has been in use since the 1960s and is used for cold water distribution only?
Polyvinyl chloride
Galvanized steel pipe
Chlorinated Polyvinyl Chloride
Polybutylene
PEX
Polyvinyl chloride
