Maintenance Technician Interview Prep 2026 – Industrial Maintenance Skills and
Job Interview Guide
Each point in which a robot pivots is called what? - correct answer ✔✔ A joint.
Amps, or amperes, are a measure of what? - correct answer ✔✔ Current
What is the formula for Ohm's law? - correct answer ✔✔ V=IR (V is in volts, I is in amps, R is in
ohms)
What is the resistance in a 6V circuit reading 0.5A - correct answer ✔✔ 12 Ohms
A PLC's CPU is also know as what? - correct answer ✔✔ A logic solver.
When adding additional I/O modules to a PLC expansion rack, what type of module is required
to allow them to communicate back to the CPU? - correct answer ✔✔ An IM (Interface Module)
What does an ohmmeter measure? - correct answer ✔✔ Resistance (ohms)
What is the name for the tool on the end of a Fanuc robot? - correct answer ✔✔ EOAT (End of
Arm Tool) or End Effector
What does AC stand for and what does DC stand for? - correct answer ✔✔ Alternating Current
and Direct Current
To determine the total resistance of three resistors running in parallel, what formula is
required? - correct answer ✔✔ 1/RT=1/R1+1/R2+1/R3
, A millimeter is what fraction of a meter? - correct answer ✔✔ 1/1000 or 10 to the negative 3rd
In the United States, what is the standard power output at a receptacle? - correct answer ✔✔
110v-120v at 15A-20A
Each line of code in a logic developer program is called what? - correct answer ✔✔ A rung.
What is the purpose of a PLC power supply? - correct answer ✔✔ To convert AC voltage to DC
and step down the voltage.
Are E-Stops normally open or normally closed? - correct answer ✔✔ Normally closed.
Frequency is measured in what unit? - correct answer ✔✔ Hertz (Hz)
What component is responsible for tracking the positioning of a servo? - correct answer ✔✔ An
encoder.
When performing preventative maintenance on Fanuc robots, what tasks are performed? -
correct answer ✔✔ Servo encoder backup batteries are replaced, joints are greased, and EOAT's
are cleaned.
What color are collaborative Fanuc robots? - correct answer ✔✔ Green.
What do RPS and UPS stand for in the context of PLC's? - correct answer ✔✔ Redundant Power
Supply and Uninterruptable Power Supply
What is the range of analog input signals for a traditional PLC's AI module? - correct answer ✔✔
4mA-20mA
Job Interview Guide
Each point in which a robot pivots is called what? - correct answer ✔✔ A joint.
Amps, or amperes, are a measure of what? - correct answer ✔✔ Current
What is the formula for Ohm's law? - correct answer ✔✔ V=IR (V is in volts, I is in amps, R is in
ohms)
What is the resistance in a 6V circuit reading 0.5A - correct answer ✔✔ 12 Ohms
A PLC's CPU is also know as what? - correct answer ✔✔ A logic solver.
When adding additional I/O modules to a PLC expansion rack, what type of module is required
to allow them to communicate back to the CPU? - correct answer ✔✔ An IM (Interface Module)
What does an ohmmeter measure? - correct answer ✔✔ Resistance (ohms)
What is the name for the tool on the end of a Fanuc robot? - correct answer ✔✔ EOAT (End of
Arm Tool) or End Effector
What does AC stand for and what does DC stand for? - correct answer ✔✔ Alternating Current
and Direct Current
To determine the total resistance of three resistors running in parallel, what formula is
required? - correct answer ✔✔ 1/RT=1/R1+1/R2+1/R3
, A millimeter is what fraction of a meter? - correct answer ✔✔ 1/1000 or 10 to the negative 3rd
In the United States, what is the standard power output at a receptacle? - correct answer ✔✔
110v-120v at 15A-20A
Each line of code in a logic developer program is called what? - correct answer ✔✔ A rung.
What is the purpose of a PLC power supply? - correct answer ✔✔ To convert AC voltage to DC
and step down the voltage.
Are E-Stops normally open or normally closed? - correct answer ✔✔ Normally closed.
Frequency is measured in what unit? - correct answer ✔✔ Hertz (Hz)
What component is responsible for tracking the positioning of a servo? - correct answer ✔✔ An
encoder.
When performing preventative maintenance on Fanuc robots, what tasks are performed? -
correct answer ✔✔ Servo encoder backup batteries are replaced, joints are greased, and EOAT's
are cleaned.
What color are collaborative Fanuc robots? - correct answer ✔✔ Green.
What do RPS and UPS stand for in the context of PLC's? - correct answer ✔✔ Redundant Power
Supply and Uninterruptable Power Supply
What is the range of analog input signals for a traditional PLC's AI module? - correct answer ✔✔
4mA-20mA
