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What is the minimum clearance from a combustible material for a moisture-exhaust duct installed in a
hospital?


9 inches


®


&:
6 inches


o
d.
3 inches


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(7.4.7)


The correct answer is:
6 inches


Question 2


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According to the B.149.1 a forced-air furnace shall be equipped with a high-temperature limit control set
at a maximum temperature of:


d.
300 F
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(7.8.6)


The correct answer is:
250 F
Question 3


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A direct-fired door heater shall be interlocked with an associated door so the heater can operate only if the
door served is open at least:


0


d.
80%
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(7.19.2)


The correct answer is:
80%
Question 4


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Which of the following is not a requirement when installing an appliance in a bedroom?
o
a.
The appliance must be equipped with a pressure regulator


O
b.
The appliance must be of the automatic temperature-controlled type


0


con
The appliance must be vented and meet the requirements for combustion air specified by section 8


0
d.
The appliance must have a 100% safety shut-off control


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(G&SR 7.25A.3)


The correct answer is:
The appliance must be vented and meet the requirements for combustion air specified by section 8
Question 5


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A furnace that is used to heat a residence under construction shall be installed on a finished concrete floor
or on a poured concrete slab that is at least:
Oj
a.
4-inch thick


o
b.
1-inch thick


0


(oF
6-inch thick


o
d.
3-inch thick
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(7.13.5)


The correct answer is:
4-inch thick
Question 6


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Where any combustible gas, vapor, or dust is present the outdoor intake for a DFMA shall not be less
what horizontal distance from the vertical plane:
o
a.
15 feet


d.
10 feet


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(7.20.9)

The correct answer is:
20 feet


Question 7
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In a spray booth application, an interlock shall be provided to lock out the spraying equipment unless the
DFPAH is operated in:


®


a.
Process mode


o
b.
Ventilation mode


Oj


G:
Exhaust mode


o
d.
Spray mode


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(7.21.10)


The correct answer is:


Ventilation mode


Question 8
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A refrigerator installed in a dwelling unit shall be of the:


®


a.
Indoor-non-Direct Vent Type


Oj
b.
Direct-Vent Type


®


c.
Direct-fired Type


o
d.
Indirect Vent Type


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(7.34.2)

The correct answer is:
Direct-Vent Type


Question 9
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When installing a commercial cooking appliance on an unprotected combustible material, the appliance
shall have legs that provide a minimum clearance between the metal base and the material of:


d.
4-inch
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(732:2)
The correct answer is:
4-inch
Question 10


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When a unit heater is installed in a garage, what is the minimum clearance that shall be maintained
between the base of the unit heater and the garage floor?


€:
10 feet


0
d.
4 feet


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(7.28.3)


The correct answer is:
8 feet
Question 11


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When installing an incinerator that requires draft-control the incinerator shall be installed with what type
of drat-control device?
0
a.
Double-acting Barometric Damper


O|
b.
Draft Hood


0


G:
Draft Divertor


®
d.
Single-acting Barometric Damper


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(7.30.3)


The correct answer is:
Single-acting Barometric Damper
Question 12


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The discharge pipe for a temperature and pressure relief on a tank-type water heater or the pressure relief
device for a tankless water heater shall have the discharge pipe terminate not less than above the
floor.


0


a.
150 mm


d.
300 mm


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(7.27.2)


The correct answer is:
300 mm
Question 13


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Except for underfired storage-type water heaters, what is the minimum clearance from a combustible
material for any other type of water heater?


Ci
12-inch


o
d.
4-inch
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(7.27.4)


The correct answer is:
6-inch
Question 14


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What is the minimum distance from a property line when installing a outdoor pool heater?
0
a.
48-inch


oF
30-inch


o
d.


24-inch
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(7.26.3)


The correct answer is:
18-inch
Question 15


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What is the minimum clearance from the floor to an infrared heater when installed in a repair or shop area
that communicates with an aircraft hangar?


0


a.
10 feet


d.
4 feet


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Your answer is correct.
(7.23.5)


The correct answer is:

8 feet

Identify the sub-atomic particles found in an atom? Select all that apply.
Select one or more:

Vv

a.

Electron


T
b.
Neutron


r


(oF
Nucleus


M
d.
Proton


r


ci
Core


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Your answer is partially correct.
You have correctly selected 2.
The correct answers are: Proton, Neutron, Electron


Question 2


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What are factors of the state of matter?
Select one:
0
a.
Size and density


O|
b.
Volume and mass


®


c.
Pressure and temperature


0
d.
Color and weight


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The correct answer is: Pressure and temperature


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What causes an atom to have a positive charge?
Select one:


0


a.
Electron surplus


o
b.
Electron deficient


0


Cc.
Neutron deficient


O
d.
Nucleus surplus


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The correct answer is: Electron deficient


Question 4
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What holds the electron in its orbit?
Select one:


®


a.
The law of repelling


o
b.
The law of attraction


Oj


CG;
Total force


o
d.
Centrifugal force


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The correct answer is: The law of attraction


Question 5
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What must occur for an atom to become negatively charged?
Select one:


®


a.
Neutron deficient


o
b.
Proton surplus


®


C:
Electron surplus


O|
d.
Electron deficient


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The correct answer is: Electron surplus


Question 6
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What is the name given to an atom with an unbalanced electrical charge?
Select one:


Element


o
d.
Compound


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The correct answer is: Ion


Question 7
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What is a characteristic of a conductor relative to its electrons?
Select one:
o
a.
Positively charged


®
b.
Held loosely in their orbits


Oj


c.
Held tightly in their orbits


o
d.
Neutral charged


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The correct answer is: Held loosely in their orbits


Question 8
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Identify the materials which are considered good conductors. Select all that apply.
Select one or more:
M
a.
Plastic
7


b.
Aluminum


Vv
CG:
Silver


r


d.
Glass


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The correct answers are: Silver, Aluminum


Question 9
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What is created when a large amount of electrons are moving through a small conductor?
Select one:


0


a.
Low resistance


0


b.
Voltage


Low vacuum pressure


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The correct answer is: Heat
Question 10


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How are conductors sized?
Select one:
o
a.
Weight
o
b.
Diameter


®


c.
Density


d,
Cross sectional area


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The correct answer is: Cross sectional area
Question 11


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Which unit of measure is used to describe “Electromotive Force”?
Select one:
O|
a.
Voltage


®
b.
Ampere


d.
Watts
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The correct answer is: Voltage


Question 12
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What does “T” indicate in Ohm’s Law?
Select one:


®


a.
Resistance


c.
Voltage


o
d.
Conductance


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The correct answer is: Current
Question 13


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is the potential pressure difference between two points in an electrical circuit.
Select one:
0
a.
Current


o
b.
Resistance


0}


c.
Voltage


0)
d.
Wattage


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The correct answer is: Voltage
Question 14


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What is used to measure the amount of current that flows through a conductor ?
Select one:


OJ


a.


d.
Ohms
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The correct answer is: Amperes
Question 15


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Calculate the current through a circuit if it has 50 ohms of resistance and the voltage is 24 volts?
Select one:


d.
0.48 A


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The correct answer is: 0.48 A
Question 16


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Calculate the voltage of a circuit if it has 15 ohms of resistance and the current flow is 8 amps?
Select one:


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The correct answer is: 120
Question 17


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What would be the anticipated resistance of a circuit with an EMF of 120 volts and a current of 6 amps?
Select one:


d.
0.5Q
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The correct answer is: 20 Q
Question 18


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Which of the following materials has the highest resistance to current flow?
Select one:
0
a.
Aluminum


d.
Salt Water


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The correct answer is: Glass
Question 19


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What wire gauge can handle the most current?


Select one:


zeg sea srog


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The correct answer is: 8
At what speed does the electron move?
Select one:


0


a.
25 feet (7.62 meters) per second


o
b.
186,000 miles (299,792 kilometers) per hour


Oj


c.
60 miles (96.56 kilometers) per hour


0
d.
186,000 miles (299,792 kilometers) per second


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The correct answer is: 186,000 miles (299,792 kilometers) per second


Question 2
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What is the type of transformer that increases voltage?
Select one:
0
a.
Step around


o
b.
Step up


0


C:
Step over


Oj
d.
Step down


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Your answer is incorrect.


The correct answer is: Step up


Question 3
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What are the two parts of a switch?
Select one:
0
a.
Bridge and gap


o
b.
Lever and fulcrum


0


c.
Point and armature


Ol
d.
Contact and pole


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The correct answer is: Contact and pole


Question 4
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What is the moving part of a switch?
Select one:


d.
Pole
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The correct answer is: Pole


Question 5
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What type of switch can run 2 separate circuits independently and has a neutral position?
Select one:


0


a.
Rotary


Oj


b.
Single throw double pole


0


C;
Double pole single throw


o
d.
Double throw single pole


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The correct answer is: Double throw single pole


Question 6
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What is the simplest type of fuse?
Select one:
Oj
a.
Metal conductor


o
b.
Circuit breaker


®


A
Transforming


0
d.
Time delay


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The correct answer is: Metal conductor


Question 7
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How many amps should be safely ran through a 15 amp fuse?
Select one:
0
a.
17


d.
12
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The correct answer is: 12


Question 8
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What is the purpose of a circuit protector?
Select one:


0)


a.
Control voltage


o
b.
Manually control the energy in a circuit


0}


G
Prevent fire and other damage


o
d.
Protect wires from the weather and mechanical damage


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The correct answer is: Prevent fire and other damage


Question 9
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What, if excessive, causes a circuit breaker to trip?
Select one:
Oj
a.
Current


c.
Voltage


o
d.
Resistance


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The correct answer is: Current
Question 10


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What is the purpose of a transformer?
Select one:


0


a.


Increase the amount of resistance


o
b.
Increase or decrease the voltage


Oj


c.
Change from AC to DC


0
d.
Reverse the flow of electricity


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Your answer is incorrect.


The correct answer is: Increase or decrease the voltage
Question 11


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How is electrical energy transferred from the primary to the secondary windings of a transformer?
Select one:
0
a.
With an electrical connection


O|
b.
Induction


®


C
With a switch


0
d.
Mechanically


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The correct answer is: Induction
Question 12


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What is required for induction to occur?
Select one:
O
a.
Magnetic field and moving conductor


o
b.
High voltage


0


c:
Open switch


o
d.
A perfect vacuum with static electricity


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The correct answer is: Magnetic field and moving conductor
Question 13


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What type of power can a transformer be used on?
Select one:


0


a.
AC or DC


0
b.
DC


®


c.
None of the above


Oj
d.
AC


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The correct answer is: AC
Question 14


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What electrical components work using the principle of electromagnetism? Select all that apply:
Select one or more:
Vv
a.
Transformer


r
b.
Relay coil
r


i:
Light bulb


0
d.
Fuse


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You have correctly selected 1.
The correct answers are: Transformer, Relay coil
Question 15


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In a relay, what is attracted to the stationary contact when the coil is energized?
Select one:

Ol

a.

An armature


o
b.
A spring
o


G
An electron


o
d.
A motor


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The correct answer is: An armature
Question 16


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What is the primary advantage of using a relay?
Select one:


®


a.
Eliminates the need for fuses


o
b.
Smaller wire used from a remote switch


0}


C:
Faster operation of a motor


o
d.
Reduces resistance In the circuit


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The correct answer is: Smaller wire used from a remote switch
Question 17


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What type of contacts are used on a relay switch?
Select one:
O
a.
Both NC and/or NO are correct


o
b.
Normally closed (NC)


0


c.
Normally open (NO)


o
d.
Step down or step up


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Your answer is correct.


The correct answer is: Both NC and/or NO are correct

What type of diagram is used to illustrate wiring principles of circuits?
Select one:

Oj

a.

Ladder


d.
Stepped


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The correct answer is: Ladder


Question 2
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What type of current is most commonly generated in North America?
Select one:
0
a.
Universal


Oj
b.
Alternating


®


c.
Overloading


0
d.
Direct


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Your answer is correct.


The correct answer is: Alternating
>>>