cameroon gce A level 2024 electrical and electronic systems 2
cameroon gce A level 2024 electrical and electronic systems 2
SECTION A
from this Section)
(Answer THREE Questions
QVFSTZl 22*gram of an ignition system
| Sketch the TWO types of winding used in a stator and differentiate between them by stating their respective | |
| (4 marks) | mathematical formulae in terms of voltage and current. |
(2 marks)
(3 marks)
(2 marks)
c. Give the reason why the output voltage of an alternator should be regulated.
d. List TWO advantages of an electronic voltage regulator over the electromechanical type
e. Briefly explain how to determine if an alternator is charging or not while the engine running
f. A vehicle owner complains of the alternator not charging the battery and also noisy in operation. Reproduce
the table below in your answer booklets giving TWO causes and TWO remedies for each fault. (4.5 marks)
Give TWO reasons why stranded cables are more preferred on automobile wiring circuit.
b. Most automobile electrical circuits employ printed circuit boards for their connections.
i. State ONE advantage of using printed circuit on automobile dashboard.
ii. State TWO precautions to be observed when repairing printed circuits on the vehicle. (3 marks)
c. Every circuit requires a current carrying conductor/wire
i. List THREE major factors that determine the proper size of wire to be used.
ii. Explain how the surface area and length influences current flow in a wire.
d. Describe the procedure of using a jumper to check an open circuit.
e. All electrical load requires a protective device and there exists many types such as fuses, circuit breaker, etc.
i. State the difference between a fuse and a circuit breaker.
ii. Explain how a circuit breaker operates.
f. In a single sentence, explain what is meant by common point diagnoses.
GROUND RETURN
THROUGH CHASSIS
ListTHSP^tSn^l
| driverAould always perform on the windscreen wiper | |
| ^ numbcrcd parts 1, 2, 4 and 9. Si Explain S T ^J S J S i n r ^^ |
(°-5 mark x4= 2 mark) |
d. Reproduce and complete the table below by stating TWO possibleo r causes placedof closer each faulty to the earth brush ^. (^2^nTartj
| Identify the numbered parts 1, 2,and 3 of the circuit, | (0.5markx3= 1.5 marks) |
| ii. List THREE possible checks to be carried out if the wiper motor does not shut off. | (3 marks) (3 marks |
| iil Outline the various steps to follow if any speed of the wiper system is not operational. |
