OHIO MAINTENANCE TECHNICIAN
EXAM 2026/2027: 150 VERIFIED
QUESTIONS & ANSWERS WITH
DETAILED RATIONALES — OHIO
BOARD OF BUILDING STANDARDS &
OHIO EPA CERTIFICATION PREP
SECTION 1: SAFETY & LOCKOUT/TAGOUT (Questions 1–25)
1. What is the primary purpose of a lockout/tagout (LOTO) procedure?
A. To speed up the repair process
B. To prevent the unexpected energization or startup of machinery
C. To ensure the machine is cleaned properly
D. To log maintenance hours accurately
Correct Answer: B) To prevent the unexpected energization or startup of
machinery
Rationale: LOTO is a critical safety procedure that ensures dangerous machines are
properly shut off and cannot be restarted before maintenance or repair work is
completed. It isolates the energy source to protect workers from harm.
2. According to OSHA, who is responsible for applying a lockout/tagout device?
A. The supervisor of the shift
B. The employee performing the maintenance
C. The machine operator
D. The safety officer
Correct Answer: B) The employee performing the maintenance
Rationale: OSHA requires the authorized employee performing the servicing or
maintenance to apply the LOTO device. This ensures personal accountability for the
lock.
3. A technician is preparing to service a conveyor motor that has jammed mid-
shift. According to OSHA's Control of Hazardous Energy standard, what must
occur before any maintenance work begins?
A. The technician should notify the supervisor and begin work immediately.
,B. The energy source must be isolated, locked out, and tagged.
C. The conveyor should be restarted to verify the jam.
D. A work order must be submitted to the maintenance department.
Correct Answer: B) The energy source must be isolated, locked out, and tagged.
Rationale: OSHA 29 CFR 1910.147 requires that hazardous energy be isolated and
controlled before servicing. Lockout/tagout prevents unexpected energization or release
of stored energy.
4. According to OSHA lockout/tagout (LOTO) standards, what is the FIRST step
a maintenance technician must take before servicing equipment?
A. Lock the main disconnect
B. Notify affected employees
C. Test the circuit
D. Remove the fuses
Correct Answer: B) Notify affected employees
Rationale: Affected employees must be notified before shutdown so they know not to
restart or use the equipment. Locking and testing occur after proper shutdown and
isolation.
5. The most important step before starting maintenance on a machine is to:
A. Check oil levels
B. De-energize and lockout equipment
C. Wipe surfaces clean
D. Replace worn parts
Correct Answer: B) De-energize and lockout equipment
Rationale: Safety requires isolating and de-energizing all equipment before work
begins.
6. Lockout/tagout procedures ensure that:
A. Machines are cleaned properly
B. Machines are safely de-energized before maintenance
C. Production speed is increased
D. Energy efficiency is improved
Correct Answer: B) Machines are safely de-energized before maintenance
Rationale: Lockout/tagout procedures prevent accidental startup during maintenance
and protect workers from hazardous energy.
7. What is the purpose of a GFCI (Ground Fault Circuit Interrupter) outlet?
A. To protect wiring from overheating
B. To shut off power when it detects a difference between incoming and outgoing
current
,C. To increase voltage in wet areas
D. To reduce the amperage of a circuit
Correct Answer: B) To shut off power when it detects a difference between
incoming and outgoing current
Rationale: A GFCI monitors the current balance between the hot and neutral
conductors. If a ground fault occurs (current leaking to ground), the GFCI trips to
prevent electric shock.
8. Which location does NOT require GFCI protection in a dwelling unit?
A. Bathroom
B. Garage
C. Bedroom
D. Kitchen countertop
Correct Answer: C) Bedroom
Rationale: GFCI protection is required in bathrooms, garages, kitchen countertops,
outdoors, and other damp locations. Bedrooms require AFCI protection instead.
9. According to OSHA standards, what is the maximum allowable noise
exposure duration for an employee exposed to an average of 95 dBA without
hearing protection?
A. 4 hours
B. 2 hours
C. 1 hour
D. 30 minutes
Correct Answer: A) 4 hours
Rationale: OSHA's permissible exposure limit (PEL) for noise is 90 dBA for an 8-hour
time-weighted average. For every 5 dBA increase above 90 dBA, the allowable
exposure time is halved. At 95 dBA, the maximum duration is 4 hours.
10. What does PPE stand for in a maintenance context?
A. Power Protection Equipment
B. Personal Protective Equipment
C. Preventive Power Engineering
D. Primary Protection Element
Correct Answer: B) Personal Protective Equipment
Rationale: PPE includes equipment such as safety glasses, gloves, hearing protection,
respirators, and protective footwear used to reduce exposure to hazards.
11. When using a multimeter to measure resistance, what must be done first?
A. Set the meter to AC volts
B. De-energize the circuit
, C. Connect the leads to the current jacks
D. Increase the range to maximum
Correct Answer: B) De-energize the circuit
Rationale: Resistance measurements require a de-energized circuit to prevent meter
damage and electric shock. The ohmmeter uses its own internal battery to measure
resistance.
12. Which safety equipment is essential when working with electrical systems?
A. Only safety glasses
B. Hard hat and gloves
C. Insulated gloves, safety glasses, and appropriate footwear
D. Hearing protection only
Correct Answer: C) Insulated gloves, safety glasses, and appropriate footwear
Rationale: Working with electrical systems requires multiple layers of protection.
Insulated gloves protect against electrical shock, safety glasses protect eyes from sparks
and debris, and non-conductive footwear provides grounding protection.
13. Which of the following is NOT a type of inherent hazard associated with
industrial maintenance?
A. Electrical shock
B. Stored energy
C. Dust accumulation
D. Employee breaks
Correct Answer: D) Employee breaks
Rationale: Electrical shock, stored energy (like in capacitors or springs), and dust
accumulation (which can be combustible) are all inherent hazards. Employee breaks
are a scheduling activity, not a physical hazard.
14. Why should a technician release stored hydraulic or pneumatic pressure
before beginning maintenance on equipment?
A. Stored pressure prevents all mechanical movement
B. Stored pressure always improves electrical grounding
C. Stored pressure can move components or release energy even after the main
supply is shut off
D. Stored pressure makes tools work faster
Correct Answer: C) Stored pressure can move components or release energy
even after the main supply is shut off.
Rationale: Hydraulic and pneumatic systems can retain dangerous energy after the
main source is isolated. Releasing stored pressure prevents unexpected movement of
components.
EXAM 2026/2027: 150 VERIFIED
QUESTIONS & ANSWERS WITH
DETAILED RATIONALES — OHIO
BOARD OF BUILDING STANDARDS &
OHIO EPA CERTIFICATION PREP
SECTION 1: SAFETY & LOCKOUT/TAGOUT (Questions 1–25)
1. What is the primary purpose of a lockout/tagout (LOTO) procedure?
A. To speed up the repair process
B. To prevent the unexpected energization or startup of machinery
C. To ensure the machine is cleaned properly
D. To log maintenance hours accurately
Correct Answer: B) To prevent the unexpected energization or startup of
machinery
Rationale: LOTO is a critical safety procedure that ensures dangerous machines are
properly shut off and cannot be restarted before maintenance or repair work is
completed. It isolates the energy source to protect workers from harm.
2. According to OSHA, who is responsible for applying a lockout/tagout device?
A. The supervisor of the shift
B. The employee performing the maintenance
C. The machine operator
D. The safety officer
Correct Answer: B) The employee performing the maintenance
Rationale: OSHA requires the authorized employee performing the servicing or
maintenance to apply the LOTO device. This ensures personal accountability for the
lock.
3. A technician is preparing to service a conveyor motor that has jammed mid-
shift. According to OSHA's Control of Hazardous Energy standard, what must
occur before any maintenance work begins?
A. The technician should notify the supervisor and begin work immediately.
,B. The energy source must be isolated, locked out, and tagged.
C. The conveyor should be restarted to verify the jam.
D. A work order must be submitted to the maintenance department.
Correct Answer: B) The energy source must be isolated, locked out, and tagged.
Rationale: OSHA 29 CFR 1910.147 requires that hazardous energy be isolated and
controlled before servicing. Lockout/tagout prevents unexpected energization or release
of stored energy.
4. According to OSHA lockout/tagout (LOTO) standards, what is the FIRST step
a maintenance technician must take before servicing equipment?
A. Lock the main disconnect
B. Notify affected employees
C. Test the circuit
D. Remove the fuses
Correct Answer: B) Notify affected employees
Rationale: Affected employees must be notified before shutdown so they know not to
restart or use the equipment. Locking and testing occur after proper shutdown and
isolation.
5. The most important step before starting maintenance on a machine is to:
A. Check oil levels
B. De-energize and lockout equipment
C. Wipe surfaces clean
D. Replace worn parts
Correct Answer: B) De-energize and lockout equipment
Rationale: Safety requires isolating and de-energizing all equipment before work
begins.
6. Lockout/tagout procedures ensure that:
A. Machines are cleaned properly
B. Machines are safely de-energized before maintenance
C. Production speed is increased
D. Energy efficiency is improved
Correct Answer: B) Machines are safely de-energized before maintenance
Rationale: Lockout/tagout procedures prevent accidental startup during maintenance
and protect workers from hazardous energy.
7. What is the purpose of a GFCI (Ground Fault Circuit Interrupter) outlet?
A. To protect wiring from overheating
B. To shut off power when it detects a difference between incoming and outgoing
current
,C. To increase voltage in wet areas
D. To reduce the amperage of a circuit
Correct Answer: B) To shut off power when it detects a difference between
incoming and outgoing current
Rationale: A GFCI monitors the current balance between the hot and neutral
conductors. If a ground fault occurs (current leaking to ground), the GFCI trips to
prevent electric shock.
8. Which location does NOT require GFCI protection in a dwelling unit?
A. Bathroom
B. Garage
C. Bedroom
D. Kitchen countertop
Correct Answer: C) Bedroom
Rationale: GFCI protection is required in bathrooms, garages, kitchen countertops,
outdoors, and other damp locations. Bedrooms require AFCI protection instead.
9. According to OSHA standards, what is the maximum allowable noise
exposure duration for an employee exposed to an average of 95 dBA without
hearing protection?
A. 4 hours
B. 2 hours
C. 1 hour
D. 30 minutes
Correct Answer: A) 4 hours
Rationale: OSHA's permissible exposure limit (PEL) for noise is 90 dBA for an 8-hour
time-weighted average. For every 5 dBA increase above 90 dBA, the allowable
exposure time is halved. At 95 dBA, the maximum duration is 4 hours.
10. What does PPE stand for in a maintenance context?
A. Power Protection Equipment
B. Personal Protective Equipment
C. Preventive Power Engineering
D. Primary Protection Element
Correct Answer: B) Personal Protective Equipment
Rationale: PPE includes equipment such as safety glasses, gloves, hearing protection,
respirators, and protective footwear used to reduce exposure to hazards.
11. When using a multimeter to measure resistance, what must be done first?
A. Set the meter to AC volts
B. De-energize the circuit
, C. Connect the leads to the current jacks
D. Increase the range to maximum
Correct Answer: B) De-energize the circuit
Rationale: Resistance measurements require a de-energized circuit to prevent meter
damage and electric shock. The ohmmeter uses its own internal battery to measure
resistance.
12. Which safety equipment is essential when working with electrical systems?
A. Only safety glasses
B. Hard hat and gloves
C. Insulated gloves, safety glasses, and appropriate footwear
D. Hearing protection only
Correct Answer: C) Insulated gloves, safety glasses, and appropriate footwear
Rationale: Working with electrical systems requires multiple layers of protection.
Insulated gloves protect against electrical shock, safety glasses protect eyes from sparks
and debris, and non-conductive footwear provides grounding protection.
13. Which of the following is NOT a type of inherent hazard associated with
industrial maintenance?
A. Electrical shock
B. Stored energy
C. Dust accumulation
D. Employee breaks
Correct Answer: D) Employee breaks
Rationale: Electrical shock, stored energy (like in capacitors or springs), and dust
accumulation (which can be combustible) are all inherent hazards. Employee breaks
are a scheduling activity, not a physical hazard.
14. Why should a technician release stored hydraulic or pneumatic pressure
before beginning maintenance on equipment?
A. Stored pressure prevents all mechanical movement
B. Stored pressure always improves electrical grounding
C. Stored pressure can move components or release energy even after the main
supply is shut off
D. Stored pressure makes tools work faster
Correct Answer: C) Stored pressure can move components or release energy
even after the main supply is shut off.
Rationale: Hydraulic and pneumatic systems can retain dangerous energy after the
main source is isolated. Releasing stored pressure prevents unexpected movement of
components.
