The ………………. type of mixture control system, allows additional air to enter the carburetor between the main discharge nozzle and the throttle valve.
A. back suction
B. needle
C. air port
D. none of the mentioned
Answer:A
The ………………. type of mixture control system, allows additional air to enter the carburetor between the main discharge nozzle and the throttle valve.
A. back suction B. needle C. air port D. none of the mentioned
Explanation: The air port type of mixture control system, allows additional air to enter the carburetor between the main discharge nozzle and the throttle valve whereas the needle type of mixture control system, restricts the flow of fuel through the metering system while the back suction type of mixture control system, reduces the effective suction on the metering system.