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Which component of the carburettor is used to produce low pressure in the throat of the carburettor?

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in Farm Machinery by (38.9k points)
Which component of the carburettor is used to produce low pressure in the throat of the carburettor?

(a) Throttle

(b) Main jet

(c) Choke

(d) Venturi tube

The question was posed to me in an interview for job.

My question comes from Fuel Supply System in division Fuel Supply and Cooling System of Farm Machinery

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Best answer
Right option is (d) Venturi tube

To explain: Venturi tube is provided to produce low pressure in the throat of the carburettor. The suction force causes the fuel to rise in the jet. The fuel is discharged at a rate proportional to the air velocity, available at that point.

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