,Ohio Maintenance Technician Exam | Industrial Maintenance (2026)
Q&A
1. Which of the following best describes the primary goal of preventive maintenance?
A) To repair equipment after it has already failed
B) To reduce the likelihood of equipment breakdown and extend service life
C) To increase the operational speed of all machinery
D) To lower the overall wages of maintenance staff
Correct Answer: To reduce the likelihood of equipment breakdown and extend service life
Rationale: Preventive maintenance is a proactive strategy. Its core purpose is to perform
scheduled tasks to prevent failures before they occur, thereby ensuring equipment reliability,
longevity, and minimizing unplanned downtime.
2. Which measuring instrument is specifically designed to accurately measure the outside
diameter of a small shaft?
A) Tape measure
B) Micrometer
C) Feeler gauge
D) Protractor
Correct Answer: Micrometer
Rationale: A micrometer is a precision measuring tool used for taking highly accurate
external measurements, such as the diameter of a shaft. A tape measure lacks the necessary
precision, while feeler gauges measure gaps and protractors measure angles.
3. What is the primary function of a fuse in an electrical circuit?
,A) To store electrical energy for later use
B) To convert AC current to DC current
C) To protect the circuit from overcurrent conditions
D) To increase the voltage supplied to the load
Correct Answer: To protect the circuit from overcurrent conditions
Rationale: A fuse is a safety device containing a metal wire that melts when current exceeds
a safe level. This breaks the circuit, preventing damage to equipment and reducing fire risk
from overheating.
4. What does the acronym HVAC stand for in the maintenance field?
A) High Voltage and Current
B) Heating, Ventilation, and Air Conditioning
C) Hydraulic Valve and Actuator Control
D) High-Velocity Air Conveyance
Correct Answer: Heating, Ventilation, and Air Conditioning
Rationale: HVAC is the standard industry acronym for the systems responsible for heating,
cooling, and ventilating buildings. It is a critical area of knowledge for maintenance
technicians who work on these environmental control systems.
5. A Programmable Logic Controller (PLC) is primarily used to perform which function in an
industrial setting?
A) Transmit radio signals for communication
B) Produce mechanical torque for heavy loads
C) Automate and control industrial processes and machinery
D) Monitor the flow rate of hydraulic oil exclusively
, Correct Answer: Automate and control industrial processes and machinery
Rationale: A PLC is an industrial computer that receives inputs from sensors, executes
programmed logic, and sends outputs to control actuators. It is the backbone of industrial
automation, controlling complex sequences of operations.
6. According to Lockout/Tagout (LOTO) procedures, what is the primary reason for isolating
energy sources before servicing equipment?
A) To improve the overall speed of the machine
B) To prevent the accidental release of hazardous energy
C) To reduce the electrical bill for the facility
D) To allow for easier lubrication of moving parts
Correct Answer: To prevent the accidental release of hazardous energy
Rationale: LOTO procedures are critical safety protocols. Their main purpose is to ensure
that machines are properly shut off and unable to be started up again before maintenance
or servicing work is completed, thus protecting workers from unexpected energization or
start-up.
7. Which of the following statements about the pitch of a screw thread is correct?
A) It is the total height of the thread
B) It is the diameter of the screw
C) It is the distance between adjacent thread crests
D) It is the total number of threads on the screw
Correct Answer: It is the distance between adjacent thread crests
Q&A
1. Which of the following best describes the primary goal of preventive maintenance?
A) To repair equipment after it has already failed
B) To reduce the likelihood of equipment breakdown and extend service life
C) To increase the operational speed of all machinery
D) To lower the overall wages of maintenance staff
Correct Answer: To reduce the likelihood of equipment breakdown and extend service life
Rationale: Preventive maintenance is a proactive strategy. Its core purpose is to perform
scheduled tasks to prevent failures before they occur, thereby ensuring equipment reliability,
longevity, and minimizing unplanned downtime.
2. Which measuring instrument is specifically designed to accurately measure the outside
diameter of a small shaft?
A) Tape measure
B) Micrometer
C) Feeler gauge
D) Protractor
Correct Answer: Micrometer
Rationale: A micrometer is a precision measuring tool used for taking highly accurate
external measurements, such as the diameter of a shaft. A tape measure lacks the necessary
precision, while feeler gauges measure gaps and protractors measure angles.
3. What is the primary function of a fuse in an electrical circuit?
,A) To store electrical energy for later use
B) To convert AC current to DC current
C) To protect the circuit from overcurrent conditions
D) To increase the voltage supplied to the load
Correct Answer: To protect the circuit from overcurrent conditions
Rationale: A fuse is a safety device containing a metal wire that melts when current exceeds
a safe level. This breaks the circuit, preventing damage to equipment and reducing fire risk
from overheating.
4. What does the acronym HVAC stand for in the maintenance field?
A) High Voltage and Current
B) Heating, Ventilation, and Air Conditioning
C) Hydraulic Valve and Actuator Control
D) High-Velocity Air Conveyance
Correct Answer: Heating, Ventilation, and Air Conditioning
Rationale: HVAC is the standard industry acronym for the systems responsible for heating,
cooling, and ventilating buildings. It is a critical area of knowledge for maintenance
technicians who work on these environmental control systems.
5. A Programmable Logic Controller (PLC) is primarily used to perform which function in an
industrial setting?
A) Transmit radio signals for communication
B) Produce mechanical torque for heavy loads
C) Automate and control industrial processes and machinery
D) Monitor the flow rate of hydraulic oil exclusively
, Correct Answer: Automate and control industrial processes and machinery
Rationale: A PLC is an industrial computer that receives inputs from sensors, executes
programmed logic, and sends outputs to control actuators. It is the backbone of industrial
automation, controlling complex sequences of operations.
6. According to Lockout/Tagout (LOTO) procedures, what is the primary reason for isolating
energy sources before servicing equipment?
A) To improve the overall speed of the machine
B) To prevent the accidental release of hazardous energy
C) To reduce the electrical bill for the facility
D) To allow for easier lubrication of moving parts
Correct Answer: To prevent the accidental release of hazardous energy
Rationale: LOTO procedures are critical safety protocols. Their main purpose is to ensure
that machines are properly shut off and unable to be started up again before maintenance
or servicing work is completed, thus protecting workers from unexpected energization or
start-up.
7. Which of the following statements about the pitch of a screw thread is correct?
A) It is the total height of the thread
B) It is the diameter of the screw
C) It is the distance between adjacent thread crests
D) It is the total number of threads on the screw
Correct Answer: It is the distance between adjacent thread crests
