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
