YEAR 1 FINAL JATC EXAM QUESTIONS WITH DETAILED VERIFIED
ANSWERS (LATEST 2026|2027 UPDATES) ALREADY GRADED A+
What are two recognized means of preventing injury during electrical equipment operations? - Correct
Answer -Grounding
Insulation
Which of the following would not be a factor that determines the severity of an electric shock?
I. The amount of current flowing through the body
II. The current's path through the body
III. The length of time the body remains in the circuit
IV. The current's frequency - Correct Answer -All are factors that determine the severity of an electric
shock.
Burns are the most common shock-related injury. An electrical accident can result in an electrical burn,
arc burn, thermal contact burn, or a combination of burns. - Correct Answer -True
? are devices that interrupt the flow of electricity within as little as 1/40 of a second to prevent
electrocution. - Correct Answer -Ground-fault circuit interrupters
How often do electrocutions occur in the United States? - Correct Answer -1 per week
1|Page
,Occupational Safety & Health Administration (OSHA) places the threshold voltage of electric shock at ? . -
Correct Answer -50 V
What is the limited approach boundary distance for an exposed fixed circuit part on a 480Y/277-volt
distribution panel? - Correct Answer -3'6"
To ensure adequate protection, a(n) ? must be calculated on the basis of the amount of current present if
a short circuit occurs, the time the arc is allowed to burn, and the distance the worker is from the arc. -
Correct Answer -flash hazard analysis
Which National Fire Protection Association (NFPA) document covers safe working practices for electrical
work? - Correct Answer -NFPA 70E
Flame-resistant clothing is designed for the amount of heat that could be present. This heat is expressed
in calories per square centimeter of "incident energy." - Correct Answer -True
A(n) ? GFCI requires the amount of current leaving the source and returning to the source to be within 5
mA of each other. - Correct Answer -Class A
2|Page
, The metal housing of a drill-motor is a(n) ? (conductor/insulator). - Correct Answer -conductor
Double insulation on a drill will guarantee protection and safe usage of the drill. - Correct Answer -False
Note: Double insulation does not provide protection against defective cords and plugs or against heavy
moisture conditions.
o get a tool or piece of material up to the scaffold from the ground, you should ? . - Correct Answer -use
a hand line and bucket or other receptacle
Rolling scaffolds require ? and toeboards to be safe. - Correct Answer -guardrails
Before getting down from a scaffold, you should always check to be sure that materials or tools ? . -
Correct Answer -are not left in a position from which they might fall if the scaffold is moved
The ? of a conductor is defined as the diameter of the conductor in mils, squared. - Correct Answer -
circular-mil area
3|Page
ANSWERS (LATEST 2026|2027 UPDATES) ALREADY GRADED A+
What are two recognized means of preventing injury during electrical equipment operations? - Correct
Answer -Grounding
Insulation
Which of the following would not be a factor that determines the severity of an electric shock?
I. The amount of current flowing through the body
II. The current's path through the body
III. The length of time the body remains in the circuit
IV. The current's frequency - Correct Answer -All are factors that determine the severity of an electric
shock.
Burns are the most common shock-related injury. An electrical accident can result in an electrical burn,
arc burn, thermal contact burn, or a combination of burns. - Correct Answer -True
? are devices that interrupt the flow of electricity within as little as 1/40 of a second to prevent
electrocution. - Correct Answer -Ground-fault circuit interrupters
How often do electrocutions occur in the United States? - Correct Answer -1 per week
1|Page
,Occupational Safety & Health Administration (OSHA) places the threshold voltage of electric shock at ? . -
Correct Answer -50 V
What is the limited approach boundary distance for an exposed fixed circuit part on a 480Y/277-volt
distribution panel? - Correct Answer -3'6"
To ensure adequate protection, a(n) ? must be calculated on the basis of the amount of current present if
a short circuit occurs, the time the arc is allowed to burn, and the distance the worker is from the arc. -
Correct Answer -flash hazard analysis
Which National Fire Protection Association (NFPA) document covers safe working practices for electrical
work? - Correct Answer -NFPA 70E
Flame-resistant clothing is designed for the amount of heat that could be present. This heat is expressed
in calories per square centimeter of "incident energy." - Correct Answer -True
A(n) ? GFCI requires the amount of current leaving the source and returning to the source to be within 5
mA of each other. - Correct Answer -Class A
2|Page
, The metal housing of a drill-motor is a(n) ? (conductor/insulator). - Correct Answer -conductor
Double insulation on a drill will guarantee protection and safe usage of the drill. - Correct Answer -False
Note: Double insulation does not provide protection against defective cords and plugs or against heavy
moisture conditions.
o get a tool or piece of material up to the scaffold from the ground, you should ? . - Correct Answer -use
a hand line and bucket or other receptacle
Rolling scaffolds require ? and toeboards to be safe. - Correct Answer -guardrails
Before getting down from a scaffold, you should always check to be sure that materials or tools ? . -
Correct Answer -are not left in a position from which they might fall if the scaffold is moved
The ? of a conductor is defined as the diameter of the conductor in mils, squared. - Correct Answer -
circular-mil area
3|Page
