ELEC 6011 - Introduction to Electricity (Chp 15)

Question 1

An open circuit is one in which:

A) A switch is closed
B) The wire is bare
C) The current flows through the resistance
D) A switch is open
E) Voltage may exit

Answer 1

D) A switch is open

Question 2

In accordance with the Electrical Code, circuits and appliances should be:

A) Waterproof
B) White
C) NFPA approved
D) Connected to ground
E) CGA approved

Answer 2

D) Connected to ground

Question 3

When an overload occurs on a system protected by a circuit breaker, the circuit breaker opens __________ and must be closed __________.

A) Manually, manually
B) By itself, by itself
C) By itself, manually
D) Manually, by itself
E) By itself, remotely

Answer 3

C) By itself, manually

Question 4

When a person receives an electrical shock, this shock can be lethal because of:

A) Resistance

B) Voltage

C) Ungrounded appliance

D) Length of time the shock lasts

E) Current

Answer 4

E) Current

Question 5

All receptacles that are outdoors, in bathrooms or supply power to water fed appliances are required to be protected by a/an:

A) Emergency stop
B) Fuse
C) GFI
D) Trap
E) Circuit breaker

Answer 5

E) Circuit breaker

Question 6

Read the Following dials and select the correct energy reading

Answer 6

A) 3188 this is the answer
B) 8814
C) 4188
D) 8713
E) 3178

Question 7

The buildup of electrical pressure on an object which does not flow is called:

A) Corporeal electricity
B) Juminal electricity
C) Dynamic electricity
D) Metaphysical electricity
E) Static electricity

Answer 7

E) Static electricity

Question 8

What is the wattage in an electrical circuit when 5 amps of current flow under a pressure of 24 volts?

A) 90 watts
B) 0.2083 watts
C) 240 watts
D) 4.8 watts
E) 120 watts

Answer 8

C) 240 watts

Question 9

An electric grinder uses 45 watts for 3 hours. How much energy will show on an electric meter?

A) 15 kwh
B) 0.135 kwh
C) 1500 kwh
D) 1350 kwh
E) 0.07 kwh

Answer 9

B) 0.135 kwh

Question 10

The flow of electrons in a uniform direction is called?

A) Potential difference
B) Direct current
C) Electromotive force
D) Voltage drop
E) Electrical current flow

Answer 10

E) Electrical current flow

Question 11

Rubber, glass, plastic, and ceramics are examples of:

A) Conductors
B) Neutrons
C) Convectors
D) Circuits
E) Insulators

Answer 11

E) Insulators

Question 12

The white wire back to the generator in an electrical circuit is known as a __________ wire.

A) Brown
B) Hot
C) Black
D) Neutral
E) Cold

Answer 12

D) Neutral

Question 13

A continuous, unbroken path from a current-producing device to a current-consuming device and back again to the current-producing source is a:

A) Route
B) Ring
C) Circuit
D) Generator
E) Circle

Answer 13

C) Circuit

Question 14

A device which has a primary and a secondary winding, which is used to either stepdown or step up voltage in a circuit, is called a:

A) Switch
B) Fuse
C) Wall receptacle
D) Circuit breaker
E) Transformer

Answer 14

E) Transformer

Question 15

The most basic safety device used to prevent damage to electrical equipment and supply systems is the:

A) Resistor
B) Fuse
C) Ground wire
D) Switch
E) Circuit breaker

Answer 15

B) Fuse

Question 16

If the power dissipated by a resistor is 1.2 kW when supplied with 110 volts, the amperage will be _____ amperes.

A) 1320
B) 19.006
C) 10.909
D) 132
E) 91.666

Answer 16

C) 10.909

Question 17

The reduction in voltage across a resistor or load in an electrical circuit is known as the:

A) Amperage draw
B) Wattage
C) Voltage drop
D) Resistance
E) Conductive loss

Answer 17

C) Voltage drop

Question 18

In fluorescent lighting systems, starting the light frequently may cause:

A) Short lamp life
B) Blinking of the lamps
C) Blackening at the end of the lamps
D) The ends of the lamps to stay lit
E) Colour and brightness differences within the lamp

Answer 18

A) Short lamp life

Question 19

A material that will not carry an electrical current is called a/an:

A) Ampere
B) Insulator
C) Circuit
D) Conductor
E) Switch

Answer 19

B) Insulator

Question 20

Negatively charged particles rotating about the center of an atom are called?

A) Molecules
B) Neutrons
C) Protons
D) Electrons
E) Shell

Answer 20

D) Electrons

Question 21

To avoid fake or unsafe electrical equipment, you should ensure it is certified by:

A) CSA
B) CBC
C) ASA
D) AMA

Answer 21

A) CSA