What is the designed compressor pressure ratio of the gas turbine compressor rotor shown in the illustration? Illustration GT-0004

Correct Answer: Option C — 16 to 1

The compressor pressure ratio is defined as the ratio of the discharge pressure to the inlet pressure. Based on the technical specifications provided in illustration GT-0004 for this specific marine gas turbine rotor design, the engineered pressure ratio is 16 to 1, reflecting high-efficiency multi-stage axial compression.