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Turbomachinery
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A double acting steam engine with a cylinder diameter of 19 cm and a stroke of 30 cm has a cut-off of 0.35. The expansion ratio for this engine is nearly:
A)1.05
B)2.85
C)6.65
D)10.05
Correct Answer:
B
Solution :
Expansion ratio \[=\frac{1}{cut\,\,off}=\frac{1}{0.35}=2.85\]