GALAXY IEC Project Engineer Interview Questions and Answers

Thermocouples are of different types based on the combination of metals used.

• Types include J, K, T, E, N, R, S, and B

• Each type has a different temperature range and accuracy

• J type uses iron and constantan, K type uses chromel and alumel, T type uses copper and constantan, etc.

Field instruments are devices used to measure and control process variables in industrial settings.

• Pressure gauges

• Temperature sensors

• Flow meters

• Level sensors

• Analytical instruments

• Control valves

A closed feedback loop is a system where the output is fed back into the input to improve the system's performance.

• A closed feedback loop is used in control systems to maintain a desired output.

• It involves measuring the output, comparing it to the desired output, and adjusting the input accordingly.

• Examples include thermostats, cruise control in cars, and automatic voltage regulators in power systems.