Mechanical Engineering - Thermodynamics - Discussion
Discussion Forum : Thermodynamics - Section 1 (Q.No. 17)
17.
The efficiency of Diesel cycle approaches to Otto cycle efficiency when
Discussion:
41 comments Page 3 of 5.
Nikunj said:
1 decade ago
Actually right answer is 1, when cutoff is 1, efficiency of diesel cycle approaches efficiency of Otto cycle at same compression ratio.
Satish ahir said:
7 years ago
Answer is C.
Because of the value of the cut-off ratio is ZERO put the value in equation of diesel cycle then both are equal.
Because of the value of the cut-off ratio is ZERO put the value in equation of diesel cycle then both are equal.
Lokesh anand said:
1 decade ago
Cut off ratio is nothing but ratio of volume after heat addition to vol before heat addition. V3/v2 (in diesel cycle).
Pradeep gk said:
8 years ago
It is ratio of volume after heat addition to volume before heat addition in diesel cycle at constant pressure.
V2/V1.
V2/V1.
Saurabh said:
8 years ago
Answer is B.
When cutoff is decreased, diesel cycle efficiency approaches (not equal) to the otto cycle efficiency.
When cutoff is decreased, diesel cycle efficiency approaches (not equal) to the otto cycle efficiency.
Kalyan tiwari said:
1 decade ago
It is ratio of volume after heat addition to volume before heat addition in diesel cycle at constant pressure.
Ajj said:
8 years ago
If Cut off ratio equal to one.
Then efficiency diesel cycle equal to the efficiency of otto cycle.
Then efficiency diesel cycle equal to the efficiency of otto cycle.
BKvictor said:
10 years ago
Because, generally the volume will obviously increase after heating. And so it is greater than 1.0.
Parmesh said:
8 years ago
It is ratios of two constant volume of decrease and increases the cp and CF or acrobatics process.
Saif said:
1 decade ago
If cut off ratio becomes 1 that cycle would be consist of only 3 processes. What about that?
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