Auto Electrical Works Paper 2, May/June 2015

Question 5

(a) List three types of headlamp.

(b) Arrange, in order of sequence, the procedures involved in setting headlamp beam.

(i) Set the focus of the headlamp to be slightly below the intersection of vertical and horizontal lines of the screen.

(ii) Park the vehicle at a distance of 6-10 meters from the screen.

(iii) Place the vehicle on level ground.

(iv) Lock the setting screw of the headlamp.

(v) Align the vertical lines of the chart screen with centre line of headlamp.  

Observation

   The expected answers were;

(a) Types of headlamp

(1) Sealed beam hydrogen head lamp

(2) Composite headlamp

(3) High intensity discharge headlamp

(4) Projector headlamp

(5) Diverging headlamp

(6) Converging headlamp

(7) Gas discharge headlamp

(8) High beam headlamp

(9) Low beam headlamp

(10) Xenon headlamp

(11) Main headlamp

(12) Two filament headlamp

(b) Procedures involved in setting headlamp beam

First – place the vehicle on level ground

Second – park the vehicle at a distance of 6 – 10 meters from the screen

Third – align the vertical lines of the chart screen with central line of headlamps

Fourth – set the focus of the headlamps to be slightly below the intersection of vertical and horizontal lines of the screen

Fifth – lock the setting screw of the headlamp.

The candidates were required to list three type headlamps, and arranged in order sequence five procedures involved in setting headlamp beam.

It was reported that many that attempted this question were not familiar with types of headlamps. The performance was good.