(a) Sketch and explain the operation of four stroke petrol engine. Lakar dan terangkan operasi enjin empat lejang. [12 marks] [12 markah]

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QUESTION 1 SOALAN 1 CLO1 C3 (a) Sketch and explain the operation of four stroke petrol engine. Lakar dan terangkan operasi enjin empat lejang. [12 marks] [12 markah] CLO1 (b) State the functions of engines components listed below: Nyatakan fungsi komponen-komponen enjin di bawah: i) Connecting Rod. Rod penyambung. ii) Intake Manifold. Liang masukan. iii) Flywheel. Roda tenaga. [3marks] [3markah] CLO1 (c) List down TWO (2) types of cooling system and the vehicle that are using those systems. Senaraikan DUA (2) jenis sistem penyejukan dan kenderaan apa yang menggunakannya. [4 marks] [4 markah] 2 SULIT

CLO1 (d) Discuss the functions of cooling system components listed below: Bincangkan fungsi-fungsi komponen sistem penyejukan di bawah: i) Radiator. Radiator. ii) Water pump. Pam air. iii) Thermostat. Termostat. [6 marks] [6 markah] 3 SULIT

QUESTION 2 SOALAN 2 (a) List down THREE (3) types of lubricating system in Internal Combustion Engine. Namakan TIGA (3) jenis sistem pelinciran di dalam enjin pembakaran dalam. [3 marks] [3 markah] (b) State FIVE (5) functions of lubricating system. Nyatakan LIMA (5) fungsi sistem pelinciran. [10 marks] [10 markah] (c) Explain the operation of lubricating system. Terangkan operasi sistem pelinciran. [6 marks] [6 markah] (d) Define: Berikan maksud untuk: i. API. ii. SAE. [2 marks] [2 markah] 4 SULIT

(e) List TWO (2) types of oil pump. Namakan DUA (2) jenis pam minyak. [4 marks] [4 markah] 5 SULIT

QUESTION 3 SOALAN 3 a) Explain the basic of a conventional ignition system. Terangkan asas sistem penyalaan biasa. [3 marks] [ 3 markah] C3 b) Draw a box wiring circuit diagram of a Capacitor Dischage Ignition (CDI) electronic ignition system. Lukiskan gambarajah kotak dan litar sistem nyalaan elektronik jenis Discas Kapasitor. [5 marks] [5 markah] c) List FIVE (5) characteristics that differentiate a Conventional Ignition System and Electronic Ignition System. Senaraikan LIMA (5) ciri-ciri yang membezakan Sistem Penyalaan Biasa dan Sistem Penyalaan Elektronik. [5 marks] [5 markah] d) Name THREE (3) types of pulse generator used in the electronic ignition system and explain the working principle. Berikan TIGA (3) jenis penjana denyut yang digunakan dalam sistem penyalaan elektronik dan terangkan cara kerjanya. [12 marks] [12 markah] 6 SULIT

QUESTION 4 SOALAN 4 (a) Describe Front Wheel Drive (FWD) vehicle. Huraikan kenderaan pacuan roda hadapan (FWD). [5 marks] [5 markah] C3 (b) Sketch and label Rear Wheel drive (RWD) - Front Engine (FR) layout. Lakarkan dan labelkan susunatur Pacuan Roda Belakang-Enjin Hadapan. [10 marks] [10 markah] (c) Most Front Wheel Drive (FWD) layouts are front-engine. Give THREE (3) categories of Front Wheel Drive (FWD) engine. Kebanyakan susunatur pacuan roda hadapan (FWD) adalah enjin hadapan. Berikan TIGA (3) kategori enjin pacuan roda hadapan (FWD). [6 marks] [6 markah] (d) Name FOUR (4) types of light vehicle body styles. Namakan EMPAT (4) jenis gaya badan kenderaan ringan. [4 marks] [4 markah] 7 SULIT

QUESTION 5 SOALAN 5 (a) Explain where the "stabilizer bar / antiroller bar is located and explain its function in the suspension system. Terangkan di bahagian manakah stabilizer bar/antiroller bar di pasang dan terangkan fungsinya pada system gantungan. [4 marks] [4 markah] (b) The suspension system that is used on the vehicle is in the form of various types: i. Explain the function of the suspension system in a vehicle. ii. Describe the differences of both leaf springs and coil springs. Sistem gantungan yang digunakan kepada kenderaan berupa pelbagai jenis: i. Terangkan fungsi sistem gantungan dalam sesebuah kenderaan. ii. Huraikan perbezaan bagi kedua-dua spring dedaun dan spring gelung. [9 marks] [9 markah] CLO 3 (c) Maintenance is always needed to make sure car is in good performance. If there is one of the coil springs on the front suspension is broken or weak, explain: i. Why technician have to replace both of the coil springs. ii. Can it be replace on the damaged side only? Explain the effects. Selenggaraan diperlukan supaya kereta sentiasa berada pada prestasi baik. Jika terdapat salah satu daripada spring gelung pada gantungan hadapan sudah patah atau lemah, terangkan: i. Mengapa juruteknik perlu menggantikan kedua-dua spring gelung. ii. Bolehkah digantikan pada sebelah yang rosak sahaja? Terangkan kesannya. [6 marks] [6 markah] 8 SULIT

(d) You have a Proton Wira 1.6 cc. Explain how you can expand the lifetime of the front suspension system and list four (4) types of suspension system. Anda mempunyai sebuah kereta Proton Wira 1.6 cc. Terangkan bagaimana caracara anda menjaga supaya sistem gantungan hadapan lambat rosak dan senaraikan empat (4) jenis sistem gantungan. [6 marks] [6 markah] 9 SULIT

QUESTION 6 SOALAN 6 (a) Explain how the following condition will affect the tyre life: i) Cornering. ii) iii) iv) Speed, acceleration and braking. Load an inflation pressure. Vehicle design and condition. v) Road surfaces. vi) Weather condition. Terangkan bagaimana keadaan yang di bawah memberi kesan kepada kadar kehausan tayar:- i. Mengambil selekoh. ii. iii. iv. Kelajuan, memecut dan membrek. Beban dan tekanan tayar. Rekabentuk dan keadaan. v. Keadaan jalan. vi. Keadaan cuaca. [12 marks] [12 markah] 10 SULIT

(b) Figure 3(b) below shows a section of a radial tyre. Explain briefly the parts mentioned:- i. Tread. ii. Sidewall. iii. Beads. iv. Breakers. Rajah 3(b) di bawah menunjukkan keratan tayar jenis lapis jejarian. Terangkan dengan ringkas bahagian yang dinyatakan di bawah:- i) Bunga tayar. ii) Dinding. iii) Kumai. iv) Lapis. Figure 3 (b) [8 marks] [8 markah] 11 SULIT

(c) Identify FIVE (5) advantages of radial tyre as compared to crossply tyre. Kenalpasti LIMA (5) kebaikan tayar lapis jejarian dibandingkan dengan jenis lintang. [5 marks] [5 markah] SOALAN TAMAT 12 SULIT