Question:-
Consider the following statements regarding Otto cycle
1. It is not a reversible cycle
2. Its efficiency can be improved by using a working fluid of higher value of ratio of specific heats
3. The practical way of increasing its efficiency is to increase the compression ratio
4. Carbureted gasoline engine working on Otto cycle can work with compression ratios more than 12
Option (A)
1, 3 and 4 are correct
Option (B)
1, 2 and 3 are correct
Option(C)
1, 2 and 4 are correct
Option(D)
2, 3 and 4 are correct
Correct Option:
(D)
Question Solution:
Otto cycle is reversible cycle
h = 1 –(1/(rg-1)) r­h­

If better fuel is available then we can employ otto cycle for more than 12 C.R. (Alcohol fuel can be used)
question-answer-faq-3210