10+ Infiiloom Interview Questions and Answers

DOL starter directly connects the motor to the power supply, while Star-Delta starter initially connects the motor in star configuration before switching to delta configuration.

• DOL starter provides full voltage to the motor from the start, causing high starting current and torque.

• Star-Delta starter reduces the starting current and torque by initially connecting the motor in star configuration, then switching to delta configuration.

• DOL starter is simpler and cheaper compared t...read more

VFD stands for Variable Frequency Drive. It is a type of motor controller that drives an electric motor by varying the frequency and voltage supplied to the motor.

• VFDs are used to control the speed and torque of AC motors in various applications.

• They work by converting fixed frequency and voltage AC power to variable frequency and voltage output.

• VFDs can improve energy efficiency, reduce wear and tear on motors, and provide precise control over motor speed.

• Example: VFDs are c...read more

Relays in Dependency Injection are used to control the creation and lifecycle of objects.

• Relays help in decoupling the creation of objects from their usage.

• They can be used to provide different implementations of an interface based on certain conditions.

• Relays can also be used for lazy loading of objects to improve performance.

• They help in managing the dependencies of objects in a flexible and modular way.

Electricity is the flow of electrons through a conductor.

• Electricity is a form of energy that powers most of our modern devices.

• It is created by the movement of electrons from one atom to another.

• Electricity can be generated from various sources such as coal, wind, solar, and hydro power.

• It can be dangerous if not handled properly and can cause electric shock or fire.

• Electricity is measured in units of volts, amps, and watts.

RS232 protocol is a standard for serial communication between devices, commonly used in computer systems.

• RS232 uses a DB9 or DB25 connector for communication

• It uses asynchronous communication

• Data is transmitted one bit at a time

• Commonly used for connecting devices like modems, printers, and GPS receivers

A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Transformers are commonly used to increase or decrease voltage in electrical circuits.

• They consist of two coils of wire, known as the primary and secondary coils.

• The primary coil is connected to a power source, while the secondary coil is connected to the load.

• Examples of transformers include power transformers used in electrical substations and voltage tr...read more

SCADA stands for Supervisory Control and Data Acquisition, used for monitoring and controlling industrial processes.

• SCADA systems are used in industries such as power plants, water treatment facilities, and manufacturing plants.

• They collect data from sensors and equipment, display it in a graphical interface, and allow operators to control the processes remotely.

• SCADA systems help improve efficiency, reduce downtime, and enhance safety in industrial operations.

Manufacturing process involves converting raw materials into finished products through a series of steps.

• Identifying raw materials needed for production

• Designing the production process flow

• Setting up machinery and equipment

• Quality control checks at various stages

• Packaging and shipping the final product

Profinet is a real-time industrial Ethernet protocol used for automation, while Ethernet is a general networking protocol used for data communication.

• Profinet is specifically designed for industrial automation applications, providing real-time communication and deterministic behavior.

• Ethernet is a widely used networking protocol for general data communication in various industries and applications.

• Profinet offers higher performance and reliability compared to standard Etherne...read more

PLC is used for discrete control, DCS is used for process control

• PLC is typically used for discrete control applications, such as manufacturing assembly lines

• DCS is typically used for process control applications, such as chemical plants or power plants

• PLC is more modular and can be easily expanded or modified

• DCS is more centralized and allows for better coordination of multiple control loops

• PLC programming is usually ladder logic or function block diagram

• DCS programming is u...read more

PID stands for Proportional-Integral-Derivative. It is a control loop feedback mechanism used in engineering.

• PID is used to control physical processes such as temperature, pressure, flow rate, and speed.

• It calculates an error value as the difference between a measured process variable and a desired setpoint.

• The three components of PID are proportional, integral, and derivative.

• Proportional control responds to the current error value, integral control responds to the accumulat...read more