4th Class Power Engineering Part B Practice Exam 2026 – Comprehensive Study Guide

In a gas turbine, the role of detergent in the air intake system is primarily focused on maintaining the cleanliness of the components within the system, including the turbine blades. The detergent helps prevent the buildup of contaminants such as dust, dirt, and other particulates that can accumulate during operation. This buildup can negatively impact the efficiency and performance of the turbine, leading to reduced airflow and increased maintenance needs.

By ensuring that the turbine blades and other critical components are cleaner, the detergent contributes to maintaining optimal performance levels and prolonging the lifespan of the turbine. Clean blades can operate more efficiently, maximizing the energy extracted from the combustion process and ultimately improving overall turbine efficiency.

In contrast, the other options, while relevant to gas turbine operation, do not accurately describe the specific function of detergent in the air intake. For example, while fuel combustion efficiency is important, that does not directly relate to the function of detergent in the air intake system. Similarly, cooling the air intake and pressurizing it are also functions served by other systems within the turbine setup, rather than the detergent itself.