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OHIO MAINTENANCE TECHNICIAN EXAM
— PRACTICE QUESTIONS WITH VERIFIED
ANSWERS & COMPLETE RATIONALES
## SECTION 1: SAFETY & LOCKOUT/TAGOUT
**1. According to OSHA's Control of Hazardous Energy
standard, what must occur before any maintenance work
begins on jammed equipment?**
A. The technician should notify the supervisor and begin work
immediately
B. The energy source must be isolated, locked out, and tagged
C. The equipment should be restarted to verify the jam
D. A work order must be submitted to the maintenance
department
**Correct answer:** B
**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. Notification is important but is not the primary
protective step. Restarting jammed equipment risks injury .
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**2. Who is responsible for applying a lockout/tagout device
according to OSHA?**
A. The supervisor of the shift
B. The employee performing the maintenance
C. The machine operator
D. The safety officer
**Correct answer:** B
**Rationale:** The authorized employee who is performing the
servicing or maintenance is responsible for applying the LOTO
device. This ensures personal accountability for the lock.
Affected employees must be notified before shutdown .
**3. 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
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**Rationale:** LOTO is a critical safety procedure that ensures
dangerous machines are properly shut off and not started up
again before maintenance or repair work is completed. It
isolates the energy source to protect workers from harm .
**4. Which statement about lockout/tagout is TRUE?**
A. A tag may substitute for a lock
B. A lockout device must be applied by an authorized employee
C. Only a supervisor can remove a lock
D. Tags are sufficient for electrical isolation
**Correct answer:** B
**Rationale:** Lockout devices must be applied by an
authorized employee and remain under that employee's
control. Tags alone do not provide physical restraint against
startup .
## SECTION 2: ELECTRICAL SYSTEMS
**5. What is the purpose of a GFCI (Ground Fault Circuit
Interrupter) outlet?**
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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
**Rationale:** A GFCI monitors current flowing out on the hot
wire versus returning on the neutral wire. If it senses a leak
(such as current passing through a person to ground), it trips
within milliseconds to prevent electrocution. Class A GFCI is
designed to trip when leakage current exceeds approximately
4-6 milliamps .
**6. Where does the Ohio Residential Code/NEC require GFCI
protection in a dwelling unit?**
A. Only in the garage
B. Bathrooms, kitchens, garages, and outdoor receptacles
C. Only bedrooms
D. Only in unfinished basements
**Correct answer:** B
OHIO MAINTENANCE TECHNICIAN EXAM
— PRACTICE QUESTIONS WITH VERIFIED
ANSWERS & COMPLETE RATIONALES
## SECTION 1: SAFETY & LOCKOUT/TAGOUT
**1. According to OSHA's Control of Hazardous Energy
standard, what must occur before any maintenance work
begins on jammed equipment?**
A. The technician should notify the supervisor and begin work
immediately
B. The energy source must be isolated, locked out, and tagged
C. The equipment should be restarted to verify the jam
D. A work order must be submitted to the maintenance
department
**Correct answer:** B
**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. Notification is important but is not the primary
protective step. Restarting jammed equipment risks injury .
,2 | Page
**2. Who is responsible for applying a lockout/tagout device
according to OSHA?**
A. The supervisor of the shift
B. The employee performing the maintenance
C. The machine operator
D. The safety officer
**Correct answer:** B
**Rationale:** The authorized employee who is performing the
servicing or maintenance is responsible for applying the LOTO
device. This ensures personal accountability for the lock.
Affected employees must be notified before shutdown .
**3. 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
,3 | Page
**Rationale:** LOTO is a critical safety procedure that ensures
dangerous machines are properly shut off and not started up
again before maintenance or repair work is completed. It
isolates the energy source to protect workers from harm .
**4. Which statement about lockout/tagout is TRUE?**
A. A tag may substitute for a lock
B. A lockout device must be applied by an authorized employee
C. Only a supervisor can remove a lock
D. Tags are sufficient for electrical isolation
**Correct answer:** B
**Rationale:** Lockout devices must be applied by an
authorized employee and remain under that employee's
control. Tags alone do not provide physical restraint against
startup .
## SECTION 2: ELECTRICAL SYSTEMS
**5. What is the purpose of a GFCI (Ground Fault Circuit
Interrupter) outlet?**
, 4 | Page
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
**Rationale:** A GFCI monitors current flowing out on the hot
wire versus returning on the neutral wire. If it senses a leak
(such as current passing through a person to ground), it trips
within milliseconds to prevent electrocution. Class A GFCI is
designed to trip when leakage current exceeds approximately
4-6 milliamps .
**6. Where does the Ohio Residential Code/NEC require GFCI
protection in a dwelling unit?**
A. Only in the garage
B. Bathrooms, kitchens, garages, and outdoor receptacles
C. Only bedrooms
D. Only in unfinished basements
**Correct answer:** B
