Question 5
The sketch in Figure 2 shows an ignition coil.
(a) (i) Name the unit to which each of the following cables X, Y and Z are each connected.
(ii) Name the parts labelled U, V and W.
(b) State three advantages of electronic ignition system over coil ignition system.
(c) List three sensors used in electronic ignition system.
Observation
Only a few candidates attempted this question. The attempt on the question was good; however, the respondents could make adequate
sketch of oil pump, as required in 5(a).
The solution to the poorly answered question is given below.
(a) (i) The Units to which the Labelled Cables are Connected
X is connected to the battery or switch.
Y is connected to the distributor.
Z is connected to the contact breaker.
(ii) Names of Some Labelled Parts
U: Secondary winding
V: Iron core or laminated iron core
W: Primary winding