Consider’ the following factors :Diesel engine knock can be reduced by1. Engine speed2. Compression ratio.3. Degree of supercharge4. Injection advanceWhich of the statements is/are true?

Consider’ the following factors :Diesel engine knock can be reduced

1.	Consider’ the following factors :Diesel engine knock can be reduced by1. Engine speed2. Compression ratio.3. Degree of supercharge4. Injection advanceWhich of the statements is/are true?
A.	1, 2 and 3 only
B.	2 and 3 only
C.	1, 3 and 4 only
D.	2 only
Answer» B. 2 and 3 only

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Consider’ the following factors :Diesel engine knock can be reduced by1. Engine speed2. Compression ratio.3. Degree of supercharge4. Injection advanceWhich of the statements is/are true?

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