(2) (a)  State the purpose of the suspension system of a motor vehicle.
           
    (b)  List three types of springs used in the suspension system.

    (c)   Explain each of the following:
    (i)         sprung weight;
    (ii)        unsprung weight.    
                       
(d)   State three advantages of independent suspension over the rigid type.

  This question was very difficult to the candidates as they could not
   provide the required responses to the various parts of the question. 
The required responses to the various parts of the question are:

1. the purpose of the suspension system is to cushion and damp out road shock to passengers and vehicle.

(b) springs used in the suspension system are:

  - laminated or leaf spring;
  - torion bar;
  - coil or helical spring;
  - rubber or hydrolastic;
  - pneumatic or air.

(c) (i)  sprung weight consists of the parts or components that are mounted above the suspension spring of the vehicle.

(ii) unsprung weight consists of the parts or components that are mounted below the suspension spring of the vehicle.
(d) Advantages of the independent suspension over the rigid type
     are:

   -  higher rolling resistance;
   -  reduced unsprung weight or reduced wear;
   -  it is more durable;
   -  it provides greater turning radius;
   -  the deflection of one wheel does not affect the other;
   -  it provides more space for engine accommodation.