Practice Test Three Flashcards

0
Q

The hearth of a fireplace should extend in front ____ inches, if the opening is under 6’ and _____ inches if over 6’

A

16” and 20”

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1
Q

A chimney should generally be installed :

A

2’ higher than anything within 10’

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2
Q

Clay/concrete tile roofs should have how much overlap :

A

3”

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3
Q

A built up roof having a lap joint every 12” is a:

A

3ply

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4
Q

Wood shakes and shingles are best maintained by

A

Applying a quality waterproof sealer periodically

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5
Q

What is the appropriate insulation for a built-up roof:

A

Rigid

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6
Q

What is the term used to describe the act of enlarging/offsetting the chimney as it goes through the roof:

A

Corbeling

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7
Q

A crack in the bricks at the top of a doorway or window usually indicates

A

A short or rusted lintel

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8
Q

Resistance is measured in

A

Ohms

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9
Q

Romex is another name for what type of cable

A

NM

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10
Q

Current flow is measured in

A

Amperes

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11
Q

A non grounded receptacle within 6’ of water should be replaced with a

A

GFCI receptacle
GFCI upstream from receptacle
Single pole GFCI breaker

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12
Q

If the black wire or hot wire carries 10 amps,how much does the white or neutral wire carry:

A

Same as the black wire

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13
Q

When converting from natural gas to propane gas:

A

The orifice must be smaller

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14
Q

The devices used to provide ignition for oil and gas fired systems are

A

Pilot/electronic ignition and sensing devices

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15
Q

The purpose of the pressure relief valve in a hydronic heating system is:

A

To prevent pressure with the system from exceeding a pre-set limit of 30 psi

16
Q

In a conventional heat pump, the most critical component is the:

A

Compressor

17
Q

Tempered glass is safer than ordinary glass because :

A

It breaks into small rectangular pieces

18
Q
A fireplace should not share a chimney flue with 
A.another fireplace 
B.a furnace 
C.another wood stove 
D. All above
A

D. All above

19
Q

How do you determine if a shower door has safety glazing ?

A

Marked in the corner

20
Q

Maximum length of a gas appliance connector to a dryer or range is:

21
Q

Plumbing vents should be ____ inches from a parapet wall, minimum ____ inches above the roof, and ____ feet from a window.

A

12”,6”,10’

22
Q

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.all The above

A

D.All the above

23
Q

The water In a trap

A

Forms a seal to block sewer gases

24
Too much slope in horizontal waste line can cause
Siphonage at the traps
25
For water to drain freely out of the house waste system, there must be adequate:
Venting
26
Walls and ceilings in an attached garage must
Form a fire separation from the house in most jurisdictions
27
Earthquakes-which of the following is not a structural concern
Brick siding
28
In a heat pump(heating mode) the evaporator is:
Outside
29
In a typical heat pump operating in the heat mode,the temperature differential at the air handler(supply vs return) should be about:
25-30F
30
``` Defects found in drywall can normally be associated with: A.moisture B.to few nails C.improper framing or use of wet wood D. All above ```
D.all the above
31
The anode rod in a water heater ?
Protects the tank from corrosion
32
Glass block is:
Not safety glazed
33
Substantial movement of a building can be explained by all of the following except
Missing lintels
34
Te maximum spacing between supports or horizontal insulated flex air ducts is
4'
35
A lintel is used in which part of a wall system
Wall opening
36
Which material is recommended for the repair of polyurethane Foam roofing:
Elastomeric caulk