Commissioning and Maintenance Engineer

Commissioning and Maintenance Engineer Interview Questions and Answers

Updated 7 Jul 2025

Asked in Thermosag

6d ago

Q. What is entropy and how does it relate to changes on Earth?

Ans.

Entropy is a measure of the disorder or randomness in a system. Earth's entropy changes due to various natural processes.

  • Entropy is a thermodynamic property that measures the degree of randomness or disorder in a system

  • It is denoted by the symbol 'S' and has units of joules per kelvin

  • Entropy always increases in a closed system, as energy is dispersed and becomes less available to do work

  • Earth's entropy changes due to natural processes like weathering, erosion, and biological ...read more

Asked in Thermosag

4d ago

Q. Types of heat transfer

Ans.

There are three types of heat transfer: conduction, convection, and radiation.

  • Conduction is the transfer of heat through a material without any movement of the material itself.

  • Convection is the transfer of heat through the movement of fluids, such as air or water.

  • Radiation is the transfer of heat through electromagnetic waves, such as the heat from the sun.

  • Examples of conduction include touching a hot stove or holding a cold drink.

  • Examples of convection include boiling water ...read more

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