Mechatronics interview questions
500 questions with model answers, in four levels. Start with Basic, check yourself honestly, then move up.
Basic questions
- Mechatronic System Design (13)
- Sensors (13)
- Actuators (13)
- Electric Motors & Drives (13)
- Microcontrollers & Interfacing (13)
- Signal Conditioning & Data Acquisition (13)
- Control Systems (12)
- PLC & Industrial Control (12)
- Hydraulics & Pneumatics (12)
- System Modeling & Simulation (12)
- Machine Vision (12)
- Industry 4.0, IoT & Digital Twins (12)
Intermediate questions
- Mechatronic System Design (13)
- Sensors (13)
- Actuators (13)
- Electric Motors & Drives (13)
- Microcontrollers & Interfacing (13)
- Signal Conditioning & Data Acquisition (13)
- Control Systems (12)
- PLC & Industrial Control (12)
- Hydraulics & Pneumatics (12)
- System Modeling & Simulation (12)
- Machine Vision (12)
- Industry 4.0, IoT & Digital Twins (12)
Advanced questions
- Mechatronic System Design (11)
- Sensors (10)
- Actuators (10)
- Electric Motors & Drives (11)
- Microcontrollers & Interfacing (10)
- Signal Conditioning & Data Acquisition (11)
- Control Systems (11)
- PLC & Industrial Control (10)
- Hydraulics & Pneumatics (10)
- System Modeling & Simulation (11)
- Machine Vision (10)
- Industry 4.0, IoT & Digital Twins (10)
Tricky questions
- Mechatronic System Design (6)
- Sensors (7)
- Actuators (6)
- Electric Motors & Drives (7)
- Microcontrollers & Interfacing (6)
- Signal Conditioning & Data Acquisition (6)
- Control Systems (7)
- PLC & Industrial Control (6)
- Hydraulics & Pneumatics (6)
- System Modeling & Simulation (6)
- Machine Vision (6)
- Industry 4.0, IoT & Digital Twins (6)
Sample questions
- What is mechatronics?
- What is a load cell?
- What is a commutator?
- What is an anti-aliasing filter?
- What is SCADA?
- What is a time constant?
- How do you select a sensor for an application?
- What is linearity error in a sensor?
- What is the difference between unipolar and bipolar stepper motors?
- How do you convert a 4–20 mA signal to a voltage?
- How does a star-delta starter work and why is it used?
- What is a stiff system in simulation?
- Design a line-following robot.
- What is an electro-hydrostatic actuator (EHA)?
- How do you reduce power consumption in a battery-powered sensor node?
- A PLC misses pulses from a flow meter. How do you fix it?
- When do you use averaged versus switching models of a PWM motor drive?
- "Adding more sensors always makes a mechatronic system better." True?
- "Running a self-cooled motor slowly on a VFD at full torque is fine." Is it?
- "An NC contact in ladder requires a physical NC switch." True?