Question

For the same compression ratio and same heat supplied in Otto, Diesel and Dual cycles:
(A) Otto cycle has maximum efficiency.
(B) Diesel cycle has minimum heat rejected.
(C) Dual cycle has maximum heat rejected.
(D) Diesel cycle has maximum heat rejected.
Choose the correct answer from the options given below.

• A. (A), (B) and (D) only
• B. (A) and (D) only.
• C. (A), (B) and (C) only.
• D. (B) and (C) only.

Hint:

The efficiency of the Otto cycle is higher compared to Diesel and Dual cycles for the same compression ratio and heat input

Answer 1

The Correct Option is B

The Otto cycle has the highest efficiency among the three as it operates with higher compression ratios The Diesel cycle has a relatively lower heat rejection than the Dual cycle The heat rejection in the Dual cycle is typically higher than in the Otto cycle