Consider the following statements regarding supercharging of CI engines:
1. Supercharging results in a quieter and smoother operation of a CI engine
2. Supercharging of a CI engine requires an increase in valve overlap
3. The limit of supercharging for a CI engine is reached by thermal and mechanical loading
Which of the above statements are correct?
1
1, 2 and 3
2
1 and 2 only
3
1 and 3 only
4
2 and 3 only
5
Question Not Attempted