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Flashcards in Practice Test One Deck (48)
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0
Q

Four entrance cables providing service to a house indicates :

A

Three-phase service

1
Q

In balloon framing, the studs are:

A

Continuous from foundation to the roof line

2
Q

What does voltage measure ?

A

Electrical pressure

3
Q

Match the breaker amperage with copper wire sizes of 8,10,12,14

A

40,30,20,15

4
Q

What is the maximum number of shut offs to disconnect all power for a main panel?

A

Six

5
Q

In most cases chimney deterioration is caused from

A

Water/ moisture caused by condensation

6
Q

Given that you have a #6 AWG copper wire,100 amp main breaker and a panel rated for 150 amps,what is the service amperage?

A

60 and a safety hazard

7
Q

In receptacle wiring,which slot is hot?

A

Small

8
Q

A crack that increases along its path is called ?

A

V-crack

9
Q
Which of the following is not part of the structural inspection? 
A.foundation walls 
B.interior finished material 
C.roof framing member 
D.girders and floor joist
A

B. interior finished material

10
Q

What is a sign of water penetration through a foundation wall?

A

Efflorescence on the wall

11
Q

The ground immediately adjacent to the foundation should be ?

A

Sloped away from the foundation at the rate of 1” per ft for at least the first 6’

12
Q

Three entrance cables providing service to a house indicates :

A

120/240 volts

13
Q

Two basic forces individual structural components are subjected to are?

A

Compression/tension

14
Q

The recommended minimum clearance between a floor joist and the dirt floor of a crawl space without having to use treated lumber is:

A

18”

15
Q

What is the maximum space most building codes allow balusters or railings to have between them?

A

4”

16
Q

What is efflorescence ?

A

Is a white salty deposit which appears on many masonry walls and floors

17
Q
Which is the steepest roof ?
A.2/12 slope 
B.4/12
C.3/12
D.6/12
A

D.6/12 slope

18
Q

How might a rafter spread be noticed from the exterior of the home?

A

Separation of the soffits from the wall

19
Q

What is a counter flashing ?

A

A second layer of flashing that covers a bottom layer of flashings

20
Q

What is truss uplift?

A

A bowing upward of the truss’s bottom cord

21
Q

The two main components if an Air-cooled air conditioning system are:

A

Evaporator unit and the condensing unit

22
Q

What is a small peaked roof construction in the high side if a chimney called?

A

Cricket

23
Q

What type of roof requires on interlayment of felt between courses?

A

Wood shakes

24
Q

A 4-ply built up roof would have?

A

4 layers of felt and 4 layers is bitumen

25
Q

Which siding becomes brittle in cold weather ?

A

Vinyl

26
Q

The three main components of a stairway are:

A

Stringers,risers,and treads

27
Q

What is the acceptable depth of treads, according to most building codes ?

A

9” to 11”

28
Q

What siding has the tendency to expand and contract the most?

A

Vinyl

29
Q

The three major components of a fossil fuel forced air furnace are:

A

Heat exchanger,burner,blower

30
Q

The function of a fan/limit switch is to:

A

Control when the fan comes on or off and to shut off the burners if the furnace overheats

31
Q

What is the lightest weight copper pipe ?

A

Type M

32
Q

Which type of supply pipe will rust from the inside out?

A

Galvanized steel

33
Q

What should be reported as a safety hazard ?
A. Use of CPVC piping
B. cross connection
C.greenish color at joints in copper piping
D.handyman plumbing

A

B. cross connection

34
Q

A drain that gurgles or belches as it drains water may be a symptom of?

A

A missing vent

35
Q
What condition with a gas water heater should be reported as a safety hazard?
A. Holes in a flue pipe 
B. a leaking tank
C.rusting in heating chamber 
D.plastic water supply pipes
A

A. Holes in a flue pipe

36
Q

What does hissing an gurgling in. Electric water heater indicate ?

A

There is sediment in the tank

37
Q

How much exposure is proper for an 18” shake roof

A

7 1/2”

38
Q

Ground rods must be driven into the ground at least

A

8 feet

39
Q

Residential entrance cables must have minimum clearance over a driveway of

A

12’

40
Q

If cracks appear serious, you may suggest :

A

Further investigation by an engineer

41
Q

In a hydronic systems , the normal operating pressure is

A

12-15 psi

42
Q

The Hartford loop in a steam system

A

Precludes siphon action if the unit develops a leak

43
Q

Another name for a 4-way valve

A

Reversing valve

44
Q

What is the purpose of an accumulator ?

A

Keep liquid refrigerant out of the compressor

45
Q

The most likely area to find a crack or hole in the heat exchanger is:

A

In front, behind the heat shield

46
Q

A good sign that there is a crack or hole in the heat exchanger is?

A
  • Irregular flame pattern when blower is on
  • severe rusting of the heat exchanger
  • strange smells at the register
47
Q

Proper attic ventilation helps to :

A
  • prevent structure damage caused by moisture
  • increase the life of the roofing material
  • reduce energy consumption