Section: Thermodynamics | Marks: 1
An air standard Diesel cycle consists of four processes: 1-2 (isentropic compression), 2-3 (constant pressure heat addition), 3-4 (isentropic expansion) and 4-1 (constant volume heat rejection). 4T is the temperature (in K) attained at the end of isentropic expansion (3-4) before constant volume heat rejection. The constant volume heat rejection process (4-1) is replaced by a constant pressure heat rejection process (4a-1) such that 4a T is the temperature (in K) reached at the end of isentropic expansion (3-4a), and the state point 1 remains the same. Then
- A. 4 4 a T T <
- B. 4 4 a T T >
- C. 4 4 a T T =
- D. 4 4 2 a T T =
Answer: A. 4 4 a T T <