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Which of the following statements are correct? 1.Diesel fuels are compared using an ignition delay criterion 2.Cetane number is equal to the percentage of cetane plus 15% of the percentage of heptamethyl nonane in the fuel 3.Cetane number of alphamethyl naphthalene is assigned the value of 15 Choose the correct answer from the options given below. s: A.O 2 and 3 only B.0 .1 and 3 only C.0 and 2 only D.0 All 1 2 and 3?
Most Upvoted Answer
Which of the following statements are correct? 1.Diesel fuels are comp...
Answer:
The correct statement is:

B. 0, 1 and 3 only

Explanation:
1. Diesel fuels are compared using an ignition delay criterion:
- This statement is correct. The ignition delay of a fuel is the time between the start of injection and the start of combustion in a diesel engine. The shorter the ignition delay, the better the fuel quality.

2. Cetane number is equal to the percentage of cetane plus 15% of the percentage of heptamethyl nonane in the fuel:
- This statement is incorrect. The cetane number is a measure of the ignition quality of diesel fuel. It is determined by comparing the ignition delay of the fuel to that of a reference fuel (cetane or alpha-methylnaphthalene) under standardized conditions. The cetane number does not depend on the percentage of heptamethyl nonane in the fuel.

3. Cetane number of alphamethyl naphthalene is assigned the value of 15:
- This statement is correct. Alpha-methylnaphthalene is used as a reference fuel with a cetane number of 15. Other fuels are assigned cetane numbers relative to alpha-methylnaphthalene.
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Which of the following statements are correct? 1.Diesel fuels are comp...
A
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Which of the following statements are correct? 1.Diesel fuels are compared using an ignition delay criterion 2.Cetane number is equal to the percentage of cetane plus 15% of the percentage of heptamethyl nonane in the fuel 3.Cetane number of alphamethyl naphthalene is assigned the value of 15 Choose the correct answer from the options given below. s: A.O 2 and 3 only B.0 .1 and 3 only C.0 and 2 only D.0 All 1 2 and 3?
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