,Ohio Maintenance Technician Exam – Practice Questions
100 Questions with Verified Answers and Detailed Rationales
SECTION 1: SAFETY & LOCKOUT/TAGOUT (Questions 1-15)
Q1. 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
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 not started up again before maintenance or repair work is completed. It isolates the energy source
to protect workers from harm .
Q2. 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
Answer: B) The employee performing the maintenance
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 .
Q3. 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
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 .
Q4. 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
Answer: B) De-energize and lockout equipment
Rationale: Safety requires isolating and de-energizing all equipment before work begins .
Q5. 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
Answer: B) Machines are safely de-energized before maintenance
Rationale: Lockout/tagout procedures prevent accidental startup during maintenance and protect
workers from hazardous energy .
Q6. Which of the following is a requirement for working as a maintenance technician in Ohio?
• A) Must be able to lift 100 pounds
• B) Must be able to work in confined spaces
• C) Must hold a commercial driver's license
• D) Must have a bachelor's degree
Answer: B) Must be able to work in confined spaces
Rationale: Ohio maintenance technician positions often require the ability to work in confined spaces,
pass a respirator fit test, and perform physical tasks including climbing ladders, crouching, twisting, and
bending .
, SECTION 2: ELECTRICAL SYSTEMS (Questions 7-30)
Q7. What is the resistance of a conductor directly proportional to?
• A) Its cross-sectional area
• B) Its length
• C) The voltage applied
• D) The ambient temperature only
Answer: B) Its length
Rationale: Resistance (R) is directly proportional to the length (L) of the conductor (R = ρL/A). A longer
wire has more resistance because electrons have to travel further and encounter more collisions .
Q8. If a motor is drawing 10 amps at 240 volts, what is the power consumed?
• A) 24 Watts
• B) 240 Watts
• C) 2400 Watts
• D) 24,000 Watts
Answer: C) 2400 Watts
Rationale: Power (P) = Voltage (E) x Current (I). P = 240V x 10A = 2400 Watts .
Q9. What is the purpose of a capacitor in an AC motor circuit?
• A) To step up the voltage
• B) To store mechanical energy
• C) To provide a phase shift for starting torque
• D) To prevent overheating
Answer: C) To provide a phase shift for starting torque
Rationale: In single-phase AC motors, the capacitor creates a phase shift between the start and run
windings. This phase shift produces a rotating magnetic field, which provides the necessary starting
torque to get the motor spinning .
Q10. Which device converts electrical energy into mechanical rotational energy?
100 Questions with Verified Answers and Detailed Rationales
SECTION 1: SAFETY & LOCKOUT/TAGOUT (Questions 1-15)
Q1. 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
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 not started up again before maintenance or repair work is completed. It isolates the energy source
to protect workers from harm .
Q2. 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
Answer: B) The employee performing the maintenance
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 .
Q3. 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
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 .
Q4. 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
Answer: B) De-energize and lockout equipment
Rationale: Safety requires isolating and de-energizing all equipment before work begins .
Q5. 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
Answer: B) Machines are safely de-energized before maintenance
Rationale: Lockout/tagout procedures prevent accidental startup during maintenance and protect
workers from hazardous energy .
Q6. Which of the following is a requirement for working as a maintenance technician in Ohio?
• A) Must be able to lift 100 pounds
• B) Must be able to work in confined spaces
• C) Must hold a commercial driver's license
• D) Must have a bachelor's degree
Answer: B) Must be able to work in confined spaces
Rationale: Ohio maintenance technician positions often require the ability to work in confined spaces,
pass a respirator fit test, and perform physical tasks including climbing ladders, crouching, twisting, and
bending .
, SECTION 2: ELECTRICAL SYSTEMS (Questions 7-30)
Q7. What is the resistance of a conductor directly proportional to?
• A) Its cross-sectional area
• B) Its length
• C) The voltage applied
• D) The ambient temperature only
Answer: B) Its length
Rationale: Resistance (R) is directly proportional to the length (L) of the conductor (R = ρL/A). A longer
wire has more resistance because electrons have to travel further and encounter more collisions .
Q8. If a motor is drawing 10 amps at 240 volts, what is the power consumed?
• A) 24 Watts
• B) 240 Watts
• C) 2400 Watts
• D) 24,000 Watts
Answer: C) 2400 Watts
Rationale: Power (P) = Voltage (E) x Current (I). P = 240V x 10A = 2400 Watts .
Q9. What is the purpose of a capacitor in an AC motor circuit?
• A) To step up the voltage
• B) To store mechanical energy
• C) To provide a phase shift for starting torque
• D) To prevent overheating
Answer: C) To provide a phase shift for starting torque
Rationale: In single-phase AC motors, the capacitor creates a phase shift between the start and run
windings. This phase shift produces a rotating magnetic field, which provides the necessary starting
torque to get the motor spinning .
Q10. Which device converts electrical energy into mechanical rotational energy?
