Question

When the throttle is suddenly opened, the mixture from the simple carburetor tends to become ___________

(a) rich

(b) lean

(c) stoichiometric

(d) not affected

The question was posed to me during an interview.

My query is from Automotive Engines in section Carburetion of IC Engine

Answer 1

The correct choice is (b) lean

To explain I would say: Generally, when the throttle is suddenly opened, the mixture from the simple carburetor tends to become lean.