Question 1

In Canada, standard AC circuits cycle how many times per second?

Accepted Answer

A)   60
B)   110
C)   115
D)   210
E)   220

Question 2

A safety device compares the current flow in the hot wire to the current in the neutral wire to detect the flow of current to ground?

Accepted Answer

A)   Circuit breaker
B)   Fuse
C)   Conductor
D)   Ground fault interrupter
E)   Lightening rod

Question 3

Ohm's law is stated as:

Accepted Answer

A)   W=VI
B)   W=VR
C)   I=RW
D)   V=IR
E)   V=IW D

Question 4

A short circuit is one in which the load has been removed or bypassed.

Accepted Answer

A) True 
 B)False

Question 5

What means of electrical safety is being employed when two pieces of equipment connected by a conductor to eliminate the difference in static charge potential between the materials?

Accepted Answer

A)   Grounding
B)   Short circuiting
C)   Interrupting
D)   Open circuiting
E)   Bonding

Question 6

If an electrician sees that the neutral wire was broken causing the motor to no longer operate, what type of problem exists in the circuit?

Accepted Answer

A)   A short circuit
B)   An open circuit
C)   A grounded circuit
D)   An insulated circuit
E)   Current overload

Question 7

Most industrial and domestic use of electricity is supplied by direct current.

Accepted Answer

A) True 
 B)False

Question 8

Electricity is the flow of negatively charged particles called electrons through an electrically conductive material.

Accepted Answer

A) True 
 B)False

Question 9

The greatest danger to humans suffering electrical shock results from current flow.

Accepted Answer

A) True 
 B)False

Question 10

What is the likely effect of 5 milliamps of electrical current?

Accepted Answer

A)   No sensation
B)   Painful shock
C)   Unable to let go
D)   Muscle contractions
E)   Heart fibrillations

Question 11

Grounding of electrical equipment is the primary method of reducing electrical hazards piece of equipment.

Accepted Answer

A) True 
 B)False

Question 12

The current effect on the human body of 10 to 15 milliamps may result in death after 3 minutes of contact.

Accepted Answer

A) True 
 B)False  False

Question 13

In Canada, the rules and regulations regarding installation, wiring, and maintenance of electrical equipment are governed by the Canadian Electrical Code (CE Code).

Accepted Answer

A) True 
 B)False

Question 14

A tree is a common natural path for what type of electrical hazard?

Accepted Answer

A)   Arc flash
B)   Insulation failure
C)   Lightning
D)   Spark
E)   Ground faults

Question 15

The CE Code specifies industrial and domestic electrical safety precautions.

Accepted Answer

A) True 
 B)False

Question 16

An arc flash is an electrical short circuit that travels through the air.

Accepted Answer

A) True 
 B)False

Question 17

Power is measure in:

Accepted Answer

A)   Amps
B)   Ohms
C)   Watts
D)   Volts
E)   Hertz

Question 18

A continuity tester may be used to determine whether a conductor is properly grounded or has a break in the circuit.

Accepted Answer

A) True 
 B)False  True

Question 19

To reduce the risk of electrocution by lightning, do not use electrical equipment during storms.

Accepted Answer

A) True 
 B)False

Question 20

Which method is commonly used to protect workers against potentially fatal exposure to electrical currents?

Accepted Answer

A)   Ionizers
B)   Humidification
C)   Double insulation
D)   Bonding
E)   Fuses

Exam 20: Electrical Hazards

In Canada, standard AC circuits cycle how many times per second?

Correct AnswerverifiedShow Answer

A safety device compares the current flow in the hot wire to the current in the neutral wire to detect the flow of current to ground?

Correct AnswerverifiedShow Answer

Ohm's law is stated as:

Correct AnswerverifiedD

A short circuit is one in which the load has been removed or bypassed.

Correct AnswerverifiedShow Answer

What means of electrical safety is being employed when two pieces of equipment connected by a conductor to eliminate the difference in static charge potential between the materials?

Correct AnswerverifiedShow Answer

If an electrician sees that the neutral wire was broken causing the motor to no longer operate, what type of problem exists in the circuit?

Correct AnswerverifiedShow Answer

Most industrial and domestic use of electricity is supplied by direct current.

Correct AnswerverifiedShow Answer

Electricity is the flow of negatively charged particles called electrons through an electrically conductive material.

Correct AnswerverifiedShow Answer

The greatest danger to humans suffering electrical shock results from current flow.

Correct AnswerverifiedShow Answer

What is the likely effect of 5 milliamps of electrical current?

Correct AnswerverifiedShow Answer

Grounding of electrical equipment is the primary method of reducing electrical hazards piece of equipment.

Correct AnswerverifiedShow Answer

The current effect on the human body of 10 to 15 milliamps may result in death after 3 minutes of contact.

Correct AnswerverifiedFalse

In Canada, the rules and regulations regarding installation, wiring, and maintenance of electrical equipment are governed by the Canadian Electrical Code (CE Code).

Correct AnswerverifiedShow Answer

A tree is a common natural path for what type of electrical hazard?

Correct AnswerverifiedShow Answer

The CE Code specifies industrial and domestic electrical safety precautions.

Correct AnswerverifiedShow Answer

An arc flash is an electrical short circuit that travels through the air.

Correct AnswerverifiedShow Answer

Power is measure in:

Correct AnswerverifiedShow Answer

A continuity tester may be used to determine whether a conductor is properly grounded or has a break in the circuit.

Correct AnswerverifiedTrue

To reduce the risk of electrocution by lightning, do not use electrical equipment during storms.

Correct AnswerverifiedShow Answer

Which method is commonly used to protect workers against potentially fatal exposure to electrical currents?

Correct AnswerverifiedShow Answer

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False

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