A Gas engine has a swept volume of 300 cm3 and its volumetric efficien

1.	A Gas engine has a swept volume of 300 cm3 and its volumetric efficiency is 0.88 and mechanical efficiency is 0.90. The volume of mixture taken in per stroke is1. 248 cm32. 252 cm33. 264 cm34. 286 cm3
Answer» Correct Answer - Option 3 : 264 cm³ Concept: Volumetric efficiency (η): Volumetric efficiency is defined as the ratio of the actual volume flow rate of air into the system to the rate at which the volume is displaced by the system. \(Volumetric\;efficiency = \frac{{Actual ~intake\;volume}}{{Swept\;volume}}\) Calculation: Given: Swept volume = 300 cm3 , Volumetric efficiency, ηv = 0.88. \(Volumetric\;efficiency = \frac{{Actual ~intake\;volume}}{{Swept\;volume}}\) ⇒ \(0.88 = \frac{{Actual~intake~volume}}{{300}}\) ∴ Actual intake volume = 300 × 0.88 = 264 cm3

A Gas engine has a swept volume of 300 cm3 and its volumetric efficiency is 0.88 and mechanical efficiency is 0.90. The volume of mixture taken in per stroke is1. 248 cm32. 252 cm33. 264 cm34. 286 cm3

Answer» Correct Answer - Option 3 : 264 cm³

Concept:

Volumetric efficiency (η):

Volumetric efficiency is defined as the ratio of the actual volume flow rate of air into the system to the rate at which the volume is displaced by the system.

\(Volumetric\;efficiency = \frac{{Actual ~intake\;volume}}{{Swept\;volume}}\)

Calculation:

Given:

Swept volume = 300 cm3 , Volumetric efficiency, ηv = 0.88.

\(Volumetric\;efficiency = \frac{{Actual ~intake\;volume}}{{Swept\;volume}}\)

⇒ \(0.88 = \frac{{Actual~intake~volume}}{{300}}\)

∴ Actual intake volume = 300 × 0.88 = 264 cm3

Discussion

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