Question

When is the choke used in the engine?

(a) When the vehicle is idling

(b) When the vehicle is accelerating

(c) When the engine is cold

(d) When the engine is hot

I had been asked this question by my college director while I was bunking the class.

This is a very interesting question from Petrol Engine Fuel System in division Fuel Supply System of Automobile Engineering

Answer 1

The correct option is (c) When the engine is cold

To elaborate: The choke is used when the engine is cold. The choke is a butterfly valve located between the entrance to the carburetor and the venturi throat.