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second half book 3 > CHAPTER 15 > Flashcards

CHAPTER 15 Flashcards

1
Q

Arranged in circles, or shells, around the protons are:
Select one:

A.
Negative charges called neutrons

B.
Positive charges called protons

C.
Negative charges called protons

D.
Negative charges called electrons

E.
Positive charges called electrons

A

D.
Negative charges called electrons

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2
Q

An electric kettle is rated at 1000 watts and 230 volts. What is the current flowing through its element?
Select one:

A.
4.35 A

B.
5.50 A

C.
83.33 A

D.
10.43 A

E.
103.5 A

A

A.
4.35 A

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3
Q

The Canadian organization specializes in testing fuel-fired equipment is the:
Select one:

A.
NFPA

B.
ULC

C.
CGA

D.
CSA

E.
ASME

A

C.
CGA

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4
Q

In regards to electrical circuits a short circuit is:
Select one:

A.
A short cut for the electrons to ground

B.
A not to tall circuit

C.
The circuit in a closed space

D.
A circuit of minimum length

E.
The opposite of a long circuit

A

A.
A short cut for the electrons to ground

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4
Q

One type of over current device is the:
Select one:

A.
Fuse

B.
Motor

C.
Generator

D.
Switch

E.
Alternator

A

A.
Fuse

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5
Q

An electric kettle uses 850 watts for 30 minutes. What will this show on an electric meter?
Select one:

A.
2.52 kWh

B.
2.25 kWh

C.
0.425 kWh

D.
83.33 kWh

E.
10.43 kWh

A

C.
0.425 kWh

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6
Q

Power is measured in:
Select one:

A.
Volts

B.
Watts

C.
Amps

D.
Mhos

E.
Ohms

A

B.
Watts

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7
Q

Electrical energy is measured and billed for in:
Select one:

A.
Kilovolt hours (kVh)

B.
Kiloamp hours (kAh)

C.
Kilolitre hours (kLh)

D.
Kilowatt hours (kWh)

E.
Kilogram hours (kgh)

A

D.
Kilowatt hours (kWh)

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7
Q

Calculations for wattage are made by multiplying the:
Select one:

A.
Wattage by the amperage

B.
Voltage by the wattage

C.
Resistance by the amperage

D.
Voltage by the amperage

E.
Voltage by the resistance

A

D.
Voltage by the amperage

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7
Q

Which of the following is not one of the four important things that every good lighting system must provide?
Select one:

A.
Light free from glare

B.
Light free from objectionable shadows

C.
The right kind of light

D.
Sufficient quantity of light

E.
Large coverage area

A

E.
Large coverage area

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7
Q

What causes a fluorescent light to flicker on & off accompanied by a shimmering effect during lighting periods?
Select one:

A.
Lamp life has been reached and needs to be replaced

B.
Wrong size light bulb

C.
Socket pins bent

D.
Low supply voltage

E.
Too high a current draw

A

A.
Lamp life has been reached and needs to be replaced

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7
Q

All matter is composed of tiny particles called:
Select one:

A.
Molecules

B.
Neutrons

C.
Protons

D.
Atoms

E.
Electrons

A

A.
Molecules

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8
Q

Any device that limits the number of amperes to a predetermined flow is called a/an:
Select one:

A.
Over current device

B.
Generator

C.
Motor

D.
Alternator

E.
Switch

A

A.
Over current device

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9
Q

An electric toaster has 9 amps flowing at 115 volts. What is the wattage?
Select one:

A.
550 W

B.
42 W

C.
110 W

D.
1035 W

E.
115 W

A

D.
1035 W

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10
Q

The device that compares the current leaving the electrical panel to that returning is the:
Select one:

A.
Wattmeter

B.
Circuit breaker

C.
Ground fault circuit interrupter

D.
Fuse

E.
Switch

A

C.
Ground fault circuit interrupter

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11
Q

Which of the following suggestions is not helpful in preventing excessively bad lighting conditions?
Select one:

A.
Always replace flashing fluorescent lamps as soon as possible otherwise flashing will destroy the starter

B.
Replace blackened or discolored lamps even though they may still be burning

C.
Replace lamps only when requested

D.
New lamps should be of the same wattage, type, colour, and voltage as the burned out lamps

E.
Where lights are in hard-to-reach locations replace all lamps when one needs replacement

A

C.
Replace lamps only when requested

12
Q

A two-way wall switch controls lighting outlets at:
Select one:

A.
Two different locations

B.
A stairway

C.
One location

D.
Other out-of-the-way locations

E.
Two entrances to a room

A

C.
One location

13
Q

An electric toaster is rated at 1200 watts and 115 volts. What is the current flowing through its element?
Select one:

A.
103.5 A

B.
4.35 A

C.
5.50 A

D.
10.43 A

E.
83.33 A

A

D.
10.43 A

14
Q

Most house circuits and many appliances have a special grounding wire leading to the cold water piping system that serves the purpose of:
Select one:

A.
Completing the circuit

B.
Providing an alternate path for the current

C.
Returning the current to the source

D.
Supplying the current to the circuit

E.
Conducting any stray current to ground

A

E.
Conducting any stray current to ground

15
Q

Not all substances possess a free electron and do not have electron flow or current, they are called non-conductors or insulators such as:
Select one:

A.
Steel

B.
Aluminum

C.
Plastics

D.
Copper

E.
Gold

A

C.
Plastics

16
Q

What is the lowest amount of electrical current that can cause death?
Select one:

A.
¾ amp

B.
¼ amp

C.
1 amp

D.
1/8 amp

E.
½ amp

A

B.
¼ amp

17
Q

An electric kettle has 5 amps flowing at 110 volts. What is the wattage?
Select one:

A.
550 W

B.
42 W

C.
1035 W

D.
115 W

E.
110 W

A

A.
550 W

17
Q

The following are all types of electric motors except:
Select one:

A.
Totally enclosed

B.
Dust proof

C.
Splash proof

D.
Open

E.
Drip proof

A

B.
Dust proof

17
Q

A device called a transformer is used to change the electrical current from one _____ to another.
Select one:

A.
Resistance

B.
Amperage

C.
Voltage

D.
Wattage

E.
Value

A

C.
Voltage

18
Q

An appliance is rated at 2000 watts and 24 volts. What is the current flowing through its element?
Select one:

A.
103.5 A

B.
83.33 A

C.
4.35 A

D.
10.43 A

E.
5.50 A

A

B.
83.33 A

19
Q

An electric iron uses 1260 watts for 2 hours. What will this show on an electric meter?
Select one:

A.
2.52 kWh

B.
2.25 kWh

C.
10.43 kWh

D.
0.425 kWh

E.
83.33 kWh

A

A.
2.52 kWh

20
Q

An electric toaster uses 1500 watts for 1½ hours. What will this show on an electric meter?
Select one:

A.
10.43 kWh

B.
83.33 kWh

C.
0.425 kWh

D.
2.25 kWh

E.
2.52 kWh

A

D.
2.25 kWh

21
Q

The Canadian organization that’s purpose is to eliminate or reduce fires started by faulty wiring and inferior electric products is the:
Select one:

A.
NFPA

B.
ULC

C.
UL

D.
ASME

E.
CSA

A

B.
ULC

22
Q

Each molecule, in turn, is made up of smaller particles called:
Select one:

A.
Protons

B.
Atoms

C.
Electrons

D.
Molecules

E.
Neutrons

A

B.
Atoms

second half book 3 (9 decks)

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