The efficiency of Diesel cycle approaches to Otto cycle efficiency when
A. Cut-off is decreased
B. Cut-off is constant
C. Cut-off is increased
D. Cut-off is zero
Answer: Option D
Solution(By Examveda Team)
In the Diesel cycle, the efficiency approaches the efficiency of the Otto cycle when the cut-off is zero.The Diesel cycle consists of constant pressure heat addition followed by constant volume heat rejection. When the cut-off ratio is zero, the heat addition process in the Diesel cycle becomes constant volume (isochoric) instead of constant pressure. This is analogous to the heat addition process in the Otto cycle, where heat is added at constant volume.
As a result, when the cut-off ratio is zero in the Diesel cycle, its thermal efficiency approaches that of the Otto cycle, which is higher due to the constant volume heat addition process. Therefore, the correct option is Option D: Cut-off is zero.
This Question Belongs to Mechanical Engineering >> Engineering Thermodynamics
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Because here (Cut-off) is mention so, when cut-off will be zero then the efficiency of diesel cycle approaches to the efficiency of otto.
Where CUT-OFF and CUT-OFF RATIO both are different, If cut-off ratio is unity then the efficiency of the diesel cycle will approach to efficiency of otto cycle.
D right answer
Should not it be zero? Please review.
Option (D) is correct.
When cut-off is zero OR in other words cut-off ratio is one (i.e. when heat is being added at constant volume), diesel cycle approaches to Otto cycle. hence option D is correct answer. Please check it and correct the answer
Air standard effeciency of an i.c engiene depends on
Answer is wrong... Correct answer is option d cut off is zero
option d is correct
option d is corect
option d is corect
It would be cut off is zero only
Cutoff ratio is zero. Option d is correct
please explain any one