The efficiency of Diesel cycle will decrease, if cut off...
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The efficiency of Diesel cycle will decrease, if cut off...
A. increases
B. decreases`
C. remains unaffected
D. first increases and then decreases
Please scroll down to see the correct answer and solution guide.
Right Answer is: A
SOLUTION
Concept:
\({\eta _{th}}\; = \;1 - \frac{1}{{r^{ \gamma -1}}}\left\{ {\frac{{r_c^\gamma - 1}}{{\gamma \left( {{r_c} - 1} \right)}}} \right\}\)
From the above equation, it is observed that the thermal efficiency of the diesel engine can be increased by increasing the compression ratio r, by decreasing the cut - off ratio rc, or by using a gas with a large value of γ
