Plant Operation Test 2025 – 400 Free Practice Questions to Pass the Exam

The principle behind a rotary screw compressor fundamentally involves the use of two interlocking helical screws. As these screws turn, they create a decreasing volume of space between them, which compresses the gas trapped within this chamber. This action efficiently reduces the gas volume and increases its pressure, allowing for effective gas transportation or storage depending on the application.

The rotary screw design offers several advantages, including continuous operation at high efficiency and lower maintenance requirements compared to other mechanical compressors. It is ideal for applications requiring a steady flow of compressed air or gas, making it a popular choice in various industrial settings.

The other options involve different mechanisms and principles unrelated to a rotary screw compressor. For example, the use of a piston mechanism refers to reciprocating compressors, which operate by moving a piston within a cylinder to compress the gas. Generating electricity through rotational movement pertains to generators or turbines, not compressors. Condensing gas using low temperatures is characteristic of refrigeration systems, which aim to change the state of a substance rather than compress it. Thus, the principle of using two interlocking helical screws is what distinctly defines a rotary screw compressor.