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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

Answer: d
Explanation: 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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