Jim's Practice Test 3 Flashcards
A chimney should generally be installed?
a. 6” higher than anything within 10’
b. 18” higher than anything within 10’
c. 2’ higher than anything within 10’
d. 3’ higher than anything within 10’
2’ higher than anything within 10’
The hearth of a fireplace should extend in front inches, if the opening is under 6’ and
inches if over 6’:
a. 20” & 20”
b. 16” & 20”
c. 16” & 16”
d. Does not matter
16” & 20”
Clay/Concrete tile roofs should have how much overlap:
a. 6”
b. 3”
c. 10”
d. 12”
3”
A built-up roof having a lap joint every 12” is a:
a. 3-ply
b. 6-ply
c. 2-ply
d. None of the above
3-ply
Wood shakes and shingles are best maintained by:
a. Applying a quality waterproof sealer periodically
b. Applying a quality oil base paint annually
c. Allowing them to age naturally
d. Washing annually with bleach to remove mildew
Applying a quality waterproof sealer periodically
What is the appropriate insulation for a built-up roof?
a. Fiberglass
b. Cellulose
c. Mineral wool
d. Rigid
Rigid
What is the term used to describe the act of enlarging/offsetting the chimney as it goes through
the roof?
a. Capping
b. Spackling
c. Corbeling
d. Wythe
Corbeling
A crack in the bricks at the top of a doorway or window usually indicates:
a. Water leak
b. Improperly mixed mortar
c. A short or rusted lintel
d. No vapor barrier in the insulation
A short or rusted lintel
Resistance is measured in:
a. Volts
b. Watts
c. Amperes
d. Ohms
Ohms
Romex is another name for what type of cable:
a. AC
b. BX
c. IMD
d. NM
NM
Current flow is measured in:
a. Volts
b. Watts
c. Amperes
d. Ohms
Amperes
A non-grounded receptacle within 6’ of water should be replaced with a:
a. GFCI receptacle
b. GFCI upstream from receptacle
c. Single pole GFCI breaker
d. All will be ok
All will be ok
If the black wire or hot wire carries 10 amps, how much does the white or neutral
wire carry:
a. Half of the black wire
b. Same as the black wire
c. Twice as much as the black wire
d. It is neutral (has no amps)
Same as the black wire
When converting from natural gas to propane gas:
a. The orifice must be larger
b. The orifice plays no role
c. The orifice must be smaller
d. None of the above
The orifice must be smaller
The devices used to provide ignition for oil and gas-fired systems are
a. Thermostat controls, dampers and emergency shut offs
b. Blower, motor, fan and limit switches
c. Emergency flashing lights and low limit switches
d. Pilot/electronic ignition and sensing devices
Pilot/electronic ignition and sensing devices
The purpose of the pressure relief valve in a hydronic heating system is:
a. To relieve high temperatures in a forced air system
b. To prevent back flow in the water system
c. To prevent pressure with the system from exceeding a pre-set limit of 30 psi
d. To release pressure in the heat exchanger system
To prevent pressure with the system from exceeding a pre-set limit of 30 psi
In a conventional heat pump, the most critical component is the:
a. Compressor
b. Condenser
c. Expansion device
d. Blower fan
Compressor
Tempered glass is safer than ordinary glass because:
a. It doesn’t break
b. It has wire meshing to prevent it from shattering
c. It is fireproof
d. It breaks into small rectangular pieces
It breaks into small rectangular pieces
A fireplace should not share a chimney flue with:
a. Another fireplace
b. A furnace
c. Another wood stove
d. All of the above
All of the above
Another fireplace
A furnace
Another wood stove
How do you determine if a shower door has safety glazing?
a. Marked in corner
b. Glass will be foggy
c. Wire mesh
d. None of the above
Marked in corner
Maximum length of an gas appliance connector to a dryer or range is:
a. 6’
b. 4’
c. 3’
d. 8’
6’
Plumbing vents should be inches from a parapet wall, minimum inches
above the roof, and feet from a window.
a. 24”, 6”, 10
b. 12”, 6”, 6’
c. 12”, 6”, 10’
d. 12”, 10”, 6’
12”, 6”, 10’
The discharge from a water heater temperature-pressure relief valve may:
a. Not run uphill
b. Be the same diameter as the valve outlet
c. Be copper, Galvanized, PEX, or CPVC
d (no content on key)
The water in a trap:
a. Can be used in an emergency
b. Keeps insects and rodents from entering the house
c. Should be drained periodically
d. Forms a seal to block sewer gases
Forms a seal to block sewer gases
Too much slope in horizontal waste lines can cause:
a. Deterioration of the joints
b. Siphonage at the traps
c. An overload in the main waste line
d. Water hammer
Siphonage at the traps
For water to drain freely out of the house waste system, there must be adequate:
a. Pressure
b. Biological deterioration
c. Venting
d. Traps
Venting
Walls and ceilings in an attached garage must:
a. Be constructed of wood
b. Have openings in them to allow the smoke out of the garage
c. Have one door or one window installed
d. Form a fire separation from the house in most jurisdictions
Form a fire separation from the house in most jurisdictions
Earthquakes - which of the following is not a structural concern:
a. Window in a corner
b. Termite damage
c. Brick siding
d. Sill plates not bolted down
Brick siding
In a heat pump (heating mode), the evaporator is:
a. Outside
b. Inside
c. Either of the above
d. None of the above
Outside
In a typical heat pump operating in the heat mode, the temperature differential at the
Air Handler (supply vs. return) should be about:
a. 25-30° F
b. 5-7° F
c. 10-15° F
d. 20-22° F
25-30° F
Defects found in drywall can normally be associated with:
a. Moisture
b. Too few nails
c. Improper framing or use of wet wood
d (no content)
The anode rod in a water heater:
a. Carries water to the bottom of the tank
b. Is not needed
c. Protects the tank from corrosion
d. None of the above
Protects the tank from corrosion
Glass block is:
a. Safety glazed
b. Not safety glazed
c. Not allowed to be used in homes
d. None of the above
Not safety glazed
Substantial movement of a building can be explained by all of the following except:
a. Missing lintels
b. Poor grading
c. Soft soil
d. Missing frost footings
Missing lintels
- The maximum spacing between supports for horizontal insulated flex air ducts is:
a. 2’
b. 4’
c. 6’
d. 8’
4’
A lintel is used in which part of a wall system:
a. Gypsum wall finish
b. Ceramic wall finish
c. Retaining wall
d. Wall opening
Wall opening
Which material is recommended for the repair of polyurethane foam roofing:
a. Acrylic caulk
b. Elastomeric caulk
c. Asphalt sealer
d. Silicone caulk
Elastomeric caulk
