engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Internal Combustion Engine Octane and Cetane Number
The knock rating of an SI engine is determined by matching the performance of the engine with a mixture of:
1
cetane and benzene
2
iso-octane and alpha-methylnaphthalene
3
iso-octane and n-heptane
4
cetane and alpha-methylnaphthalene