Zenecks Infotech Opc Interview Questions and Answers

The basic principle functions of plant equipment like pump, compressor, and heat exchanger involve fluid movement, compression, and heat transfer.

• Pump: Moves fluids by creating pressure difference

• Compressor: Increases the pressure of gases by reducing their volume

• Heat Exchanger: Transfers heat between fluids to control temperature

Troubleshooting plant process abnormalities involves identifying issues, analyzing root causes, and implementing solutions to ensure smooth operations.

• Identify the abnormality by observing changes in process parameters or equipment behavior.

• Investigate potential root causes such as equipment malfunction, human error, or external factors.

• Implement corrective actions to address the issue and prevent recurrence.

• Monitor the process closely to ensure the effectiveness of the troub...read more

A gate valve is a type of valve that uses a gate or wedge to control the flow of fluid through a pipe.

• Gate valves are commonly used in applications where a straight-line flow of fluid and minimum restriction is desired.

• They are typically either fully open or fully closed, making them ideal for on/off control.

• Gate valves are not suitable for regulating flow, as they tend to cause turbulence and pressure drop when partially open.

• Examples of gate valves include wedge gate valves...read more

Distillation is a process of separating components of a liquid mixture based on differences in boiling points.

• Distillation involves heating the liquid mixture to create vapor, then cooling the vapor to condense it back into liquid form.

• The components with lower boiling points will vaporize first and be collected, leaving behind components with higher boiling points.

• Examples of distillation include the separation of alcohol from water in the production of spirits, and the puri...read more

Unit operations of plants refer to individual processes or steps involved in a chemical or industrial plant's production.

• Unit operations include processes like distillation, filtration, mixing, and reaction.

• Each unit operation is designed to perform a specific task in the overall production process.

• Examples of unit operations in a chemical plant include heat exchangers for temperature control and pumps for fluid transfer.