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OSHA 10 HOUR TEST questions with verified
solutions ( 2025)
Concerning the identification and control of worksite hazards, which one of these
statements is FALSE? - correct -answer-Enforcement procedures must be defined
by law enforcement.
During the course of construction, how frequently should combustible scrap and
debris be removed? - correct -answer-At regular intervals
In which of the following situations can a flexible or extension cord be used? -
correct -answer-TO cross an open area
Flexible wiring should not be used where inspection would be difficult or where
damage would be likely. Flexible cords must not be run through holes in walls,
ceilings, or floors, run through doorways, windows, or similar openings (unless
physically protected), or hidden in walls, ceilings, floors, conduit, or other
raceways.
An arc flash can occur where differences of potential _____ exists. - correct -
answer-Voltage
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Arc flash and the resulting release of energy can only occur if an arc between two
differences of potential (voltage reading) exists between any two phase
conductors, or any phase conductor and a grounded part (for grounded systems
only).
Which one of the following circuit interrupts is most effective at preventing major
shocks? - correct -answer-GFCI
GFCI is the right answer because others cannot shut down electricity immediately.
Effective training of employees includes all of this information EXCEPT: - correct -
answer-How to operate power tools in wet conditions
Employers should train all employees to de-energize or drain electrical equipment
before inspection or repair, keep all electrical equipment in good repair, follow
lockout/tagout procedures, and never operate power tools in wet conditions.
Rita's employer uses an AEGCP at each construction site. It is April 26, and as Rita
gathers her power tool flexible cords to begin the day, she notices the inspector's
tape is white. By the tape's color, Rita knows the cord was inspected at the
beginning of _____. - correct -answer-White?
When an assured equipment grounding conductor program is used to protect
employees on construction sites, daily visual inspection for damage of equipment
connected by cords and plugs before use must be conducted by a competent
person. The color code divides the inspection system into subsequent quarters
designated by white, green, red, and orange.
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A worker comes in contact with live electrical parts and is shocked but receives no
major injuries. What would be the MOST LIKELY reason he suffered no electricity-
related injuries? - correct -answer-He was wearing nonconductive safety shoes
The worker did not suffer any major injuries because he was wearing
nonconductive safety shoes.
If ground fault is detected, a GFCI shuts off electricity in _____ of a second. -
correct -answer-1/40th
If a ground fault is detected, a GFCI shuts off electricity in 1/40th of a second.
Which one of the following methods MOST effectively protects machines, tools,
and operators against damage from electrical current? - correct -answer-Service
and equipment grounding
Guidelines to minimize the risk of power line accidents include all of the following
EXCEPT: - correct -answer-Use metal ladders
The use of metal ladders are not part of the guidelines to minimize the risk of
power line accidents.
Electrical burns typically occur on the _____. - correct -answer-Hands
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Hands are usually the part of the human body most often in contact with tools or
equipment and therefore suffer a greater risk for electrical burns.
Among all of the safety measures that can and should be used to prevent
electrical shock, which one is the most effective? - correct -answer-Training
Training is the most effective safety measure in the prevention of electrical shock.
What do tripped circuit breakers and blown fuses indicate? - correct -answer-Too
much current in a circuit
Tripped circuit breakers and blown fuses are clear indications of too much current
in a circuit.
Which of the following method you should not use for putting out an electrical
fire? - correct -answer-Water
Water should never be used to put out an electrical fire since this can cause an
electrical shock.
All of the following are essential points for the safe use of cords and wiring
EXCEPT: - correct -answer-Use only two-wired type cords
Two-wire type cords do not effectively protect in the event of a short circuit.
Always use three wire cords equipped with a path to ground to prevent a severe
electrical shock.
OSHA 10 HOUR TEST questions with verified
solutions ( 2025)
Concerning the identification and control of worksite hazards, which one of these
statements is FALSE? - correct -answer-Enforcement procedures must be defined
by law enforcement.
During the course of construction, how frequently should combustible scrap and
debris be removed? - correct -answer-At regular intervals
In which of the following situations can a flexible or extension cord be used? -
correct -answer-TO cross an open area
Flexible wiring should not be used where inspection would be difficult or where
damage would be likely. Flexible cords must not be run through holes in walls,
ceilings, or floors, run through doorways, windows, or similar openings (unless
physically protected), or hidden in walls, ceilings, floors, conduit, or other
raceways.
An arc flash can occur where differences of potential _____ exists. - correct -
answer-Voltage
,2|Page
Arc flash and the resulting release of energy can only occur if an arc between two
differences of potential (voltage reading) exists between any two phase
conductors, or any phase conductor and a grounded part (for grounded systems
only).
Which one of the following circuit interrupts is most effective at preventing major
shocks? - correct -answer-GFCI
GFCI is the right answer because others cannot shut down electricity immediately.
Effective training of employees includes all of this information EXCEPT: - correct -
answer-How to operate power tools in wet conditions
Employers should train all employees to de-energize or drain electrical equipment
before inspection or repair, keep all electrical equipment in good repair, follow
lockout/tagout procedures, and never operate power tools in wet conditions.
Rita's employer uses an AEGCP at each construction site. It is April 26, and as Rita
gathers her power tool flexible cords to begin the day, she notices the inspector's
tape is white. By the tape's color, Rita knows the cord was inspected at the
beginning of _____. - correct -answer-White?
When an assured equipment grounding conductor program is used to protect
employees on construction sites, daily visual inspection for damage of equipment
connected by cords and plugs before use must be conducted by a competent
person. The color code divides the inspection system into subsequent quarters
designated by white, green, red, and orange.
,3|Page
A worker comes in contact with live electrical parts and is shocked but receives no
major injuries. What would be the MOST LIKELY reason he suffered no electricity-
related injuries? - correct -answer-He was wearing nonconductive safety shoes
The worker did not suffer any major injuries because he was wearing
nonconductive safety shoes.
If ground fault is detected, a GFCI shuts off electricity in _____ of a second. -
correct -answer-1/40th
If a ground fault is detected, a GFCI shuts off electricity in 1/40th of a second.
Which one of the following methods MOST effectively protects machines, tools,
and operators against damage from electrical current? - correct -answer-Service
and equipment grounding
Guidelines to minimize the risk of power line accidents include all of the following
EXCEPT: - correct -answer-Use metal ladders
The use of metal ladders are not part of the guidelines to minimize the risk of
power line accidents.
Electrical burns typically occur on the _____. - correct -answer-Hands
, 4|Page
Hands are usually the part of the human body most often in contact with tools or
equipment and therefore suffer a greater risk for electrical burns.
Among all of the safety measures that can and should be used to prevent
electrical shock, which one is the most effective? - correct -answer-Training
Training is the most effective safety measure in the prevention of electrical shock.
What do tripped circuit breakers and blown fuses indicate? - correct -answer-Too
much current in a circuit
Tripped circuit breakers and blown fuses are clear indications of too much current
in a circuit.
Which of the following method you should not use for putting out an electrical
fire? - correct -answer-Water
Water should never be used to put out an electrical fire since this can cause an
electrical shock.
All of the following are essential points for the safe use of cords and wiring
EXCEPT: - correct -answer-Use only two-wired type cords
Two-wire type cords do not effectively protect in the event of a short circuit.
Always use three wire cords equipped with a path to ground to prevent a severe
electrical shock.
