Cetane number of high speed diesel must be ≥_________________?
Correct answer: B. 45
- A. 30
- B. 45
- C. 75
- D. 95
Explanation
A cetane number of about 45 or higher is commonly specified for high-speed diesel to ensure satisfactory ignition quality. Higher cetane means a shorter ignition delay, while values such as 75 are not the usual minimum requirement.
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