Gharda Chemicals Limited Assistant Engineer Interview Questions and Answers

Relays are electrically operated switches that control high power circuits with low power signals. Types include electromechanical, solid state, and reed relays.

• Relays work by using an electromagnet to mechanically switch contacts open or closed.

• Types of relays include electromechanical relays, solid state relays, and reed relays.

• Electromechanical relays use an electromagnet to operate mechanical contacts.

• Solid state r...read more

A single line diagram is a simplified diagram that shows the electrical connections and components of a power system in a single line.

• It is used to represent the electrical system in a simplified manner.

• It shows the connections between various components like generators, transformers, circuit breakers, etc.

• It helps in understanding the overall layout of the system and how different components are interconnected.

• It is c...read more

Distillation column and heat exchanger design

• Distillation column design involves determining the number of trays, column diameter, and height

• Heat exchanger design involves selecting the appropriate type of exchanger, sizing the heat transfer area, and determining the heat transfer coefficient

• Factors to consider in both designs include the properties of the fluids being processed, flow rates, and pressure drop

• Computer s...read more