Mechanical Engineering - Thermodynamics - Discussion

Discussion Forum : Thermodynamics - Section 1 (Q.No. 43)
43.
When cut-off ratio is __________ the efficiency of Diesel cycle approaches to Otto cycle efficiency.
zero
1/5
4/5
1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
23 comments Page 1 of 3.

Vipul said:   1 decade ago
How can cut off ratio is less than 1? it can not be 0.

Sssrinivas said:   1 decade ago
Otto cycle has more efficiency than diesel one, when cutoff ratio avoids diesel cycle reaches approx to otto.

Abhishek said:   1 decade ago
Cut off ratio can never be 0.

Keshav galav said:   1 decade ago
It can be only approx result because a gamma (1.4) term will be there.

Nakul S said:   10 years ago
Exact answer for this is 1.

Nakul S said:   10 years ago
Exact answer for this is 1. Cut off is zero but cut off ratio is 1.

Spandan said:   9 years ago
Cut off ratio is the ratio of cylinder volumes after and before the combustion process. So, obviously, the ratio should be greater than zero.

When the cut-off ratio is 1 the efficiency of diesel cycle approaches to that of otyo cycle.

Vanraj Gajarotar said:   9 years ago
Right answer is Option D, because cutt-off ratio equal to 1 put in equation then the efficiency of Diesel cycle approaches to Otto cycle efficiency.

ASIF said:   9 years ago
The answer should be 1. Because cut off is zero and cut off ratio is 1.

Arun said:   9 years ago
I am sure that the answer is definitely one.


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