auto batch one 2018

 1. (a) What do you understand by the following terms.

            (i) Diode

            (ii) Transistor

  (b) State three factor that can affect resistance.

(C) Explain why acid must always be added to water.?

2. (a) Draw simple sketch diagram of a pre engaged starter motor and label its parts.

 (b) List two main parts of start motor.

3. (a) Explain the function of the following

           (i) Alternator warning lamp

           (ii) Alternator drive belt

           (iii) High tension leads

           (iv) battery

     (b) Write a short notes on the term computerized ignition systems.

4. (a) Mention two types of electric horn.

    (b) List the parts of petrol fuel system.

    (c) Explain function of the fuel pump.

5. (a) Name three types of catalytic converter

    (b) What is the main function of a catalytic converter?

6. (a) Differentiate conventional / mechanical ignition from electronic ignition system.

    (b) Outline four components used in electronic ignition system.

7. (a) Explain the purpose of the charging system.

   (b) List four main component of a charging system.

  (c) Mention two main types of generator used in charging system of vehicle engine.