Electrical Automation Engineer Interview Questions and Answers

Automation is the use of technology to control and monitor processes, reducing human intervention.

• Automation involves the use of machines, sensors, and software to perform tasks without human intervention.

• It improves efficiency, accuracy, and consistency in industrial processes.

• Examples include automated assembly lines in manufacturing plants and automated systems in power plants.

• Automation can also be applied in home automation systems for convenience and energy efficiency.

A ladder logic drawing is a graphical representation of the electrical connections and logic used in a DOL starter.

• A DOL (Direct-On-Line) starter is used to start and stop a motor directly, without any intermediate control.

• The ladder logic drawing for a DOL starter typically includes power supply connections, motor connections, and control elements such as contactors and overload relays.

• The ladder logic diagram follows a vertical line format, with power supply connections at ...read more

Star delta connection is a type of starting method for 3-phase AC induction motors.

• Used to reduce starting current and torque in induction motors

• Initially connected in star configuration for starting, then switched to delta configuration for running

• Commonly used in applications where high starting torque is required, such as in conveyor belts or pumps

Troubleshooting a motor involves identifying and resolving issues that prevent it from functioning properly.

• Check for loose connections and wiring

• Inspect the motor for physical damage or wear

• Test the motor's voltage and current

• Check the motor's bearings and lubrication

• Verify that the motor's load is appropriate for its specifications