Question: An engine fitted with a single jet carburetor having a jet diameter of 1.25 mm has a fuel consumption of 6 kg/h. The specific

An engine fitted with a single jet carburetor having a jet diameter

An engine fitted with a single jet carburetor having a jet diameter of 1.25 mm has a fuel consumption of 6 kg/h. The specific gravity of fuel is 0.7. The level of fuel in the float chamber is 5 mm below the top of the jet when the engine is not running. Ambient conditions are I bar and 17 C. The fuel jet diameter is 0.6 mm. The discharge coefficient of sir is 0.85. Air-fuel ratio is 15. Determine the critical velocity of flow at throat and the throat diameter. Express the pres- ure at throat in mm of water column. Neglect compressibility effect.

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