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BIGF Exit Exam • Set 3 Question 13 of 30

_____________ is the ratio of the absolute pressure at the discharge from a compressor divided by the absolute pressure at the suction

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Direct Answer

Option B: Compression Ratio

Compression ratio represents the thermodynamic efficiency and mechanical stress applied to a compressor. It is calculated by dividing the absolute discharge pressure by the absolute suction pressure. Maintaining this ratio within design limits is critical for preventing overheating and mechanical failure in shipboard LNG fuel gas compressors.

All Options

A
Temperature Ratio
B
Compression Ratio (Correct Answer)
C
Compressing ratio
D
Freezing ratio

Detailed Explanation & Context

Compression ratio represents the thermodynamic efficiency and mechanical stress applied to a compressor. It is calculated by dividing the absolute discharge pressure by the absolute suction pressure. Maintaining this ratio within design limits is critical for preventing overheating and mechanical failure in shipboard LNG fuel gas compressors.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Basic Training for Ships subject to the IGF Code (BIGF).

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