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.
Discussion:
23 comments Page 2 of 3.
Dhirendra Kumar said:
8 years ago
According to me, (D) 1 is the right answer.
Vishnu said:
8 years ago
The Answer is correct.
Cut off ratio is inversely proportional to efficiency. And when it become zero efficiencies of diesel engine equal to that of a petrol engine.
Cut off ratio is inversely proportional to efficiency. And when it become zero efficiencies of diesel engine equal to that of a petrol engine.
Anurup said:
8 years ago
Answer is cut off is zero and cut off ratio is 1.
Waseem said:
8 years ago
Definitely, the answer is zero. It cannot be 1, because if 1 is inserted in an equation of efficiency of diesel cycle.
It becomes indeterminate numbers.
It becomes indeterminate numbers.
Manoj Boja said:
8 years ago
Zero is not the right answer.
V2/V1 is the cut off ratio. If it is zero, there is no meaning in it. In diesel cycle heat addition is done in the isobaric process (V2/V1). If that to be changed to isochoric process (V2/V1), it should be 1. Hence it is V1=V2.
V2/V1 is the cut off ratio. If it is zero, there is no meaning in it. In diesel cycle heat addition is done in the isobaric process (V2/V1). If that to be changed to isochoric process (V2/V1), it should be 1. Hence it is V1=V2.
Vikram koppula said:
8 years ago
Cut off ratio is should be 1. Then only diesel cycle approaches to Otto cycle efficiency. Cut off and cut off ratio both are different.
Sai kumar kakaraparthi said:
8 years ago
The cut-off ratio is never be 0.
Vijay said:
7 years ago
Cut-off ratio is 1 cut-off 0.
Sarath mohan said:
6 years ago
Cutoff ratio never falls to 0. So, the answer should be 1.
Tushar Thakare said:
6 years ago
How the volume can be zero. If not then How the Division of Non zero value can be Zero. It should be 1.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers