Question id 374 - Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license

The volume of air entering the carburettor is reduced, thus leaning the fuel/air mixture.
The density of the air entering the carburettor is reduced, thus enriching the fuel/air mixture.
The volume of air entering the carburettor is reduced, thus enriching the fuel/air mixture.
The density of the air entering the carburettor is reduced, thus leaning the fuel/air mixture.

Training tests and timed exam simulations ATPL - Airline Transport Pilot license