Automechanical Works Paper 2 WASSCE (SC), 2019

SECTION B

 

Question 15

 

(a) State one function each of the following carburetor parts:

(i) venture;
(ii) jet;
(iii) needle valve.

(b) State two mechanical faults that can hinder fuel supply to the carburetor.

(c) List three parts of a mechanical petrol pump.

Observation

 

(a) Functions of Some Carburettor Parts

(i) Venture
It increases the velocity of air intake.

(ii) Petrol Jet
It atomizes fuel into the air stream to form a mixture.

(iii) Needle Valve
- It regulates the flow of fuel into the carburetor.
- It prevents the carburettor from flooding.