NCEES FE Other Disciplines 2025 – 400 Free Practice Questions to Pass the Exam

In an adiabatic process, the defining characteristic is that there is no heat exchange with the surroundings. This means that the system is perfectly insulated, preventing any heat transfer into or out of it. The energy changes within the system occur solely as a result of work being done on or by the system rather than heat transfer.

In an adiabatic process, temperature changes can occur due to work being done on the system or by the system, impacting internal energy without any heat entering or leaving the system. This principle is key to understanding various thermodynamic processes, particularly in contexts such as engine cycles or refrigeration processes.

Understanding that an adiabatic process is entirely insulated from heat transfer allows us to analyze and apply the first law of thermodynamics (which relates internal energy, heat transfer, and work done) without considering heat exchange, leading to simplifications in calculations and predictions of system behavior.