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INSTRUCTION: This paper consists of SIX (6) structured questions. Answer any FOUR (4) questions. ARAHAN: Kertas ini mengandungi ENAM (6) soalan berstruktur. Jawab mana-mana EMPAT (4) soalan. QUESTION 1 SOALAN 1 (a) There are FOUR (4) factors that affect the resistance of conductor materials. Terdapat EMPAT (4) faktor yang mempengaruhi rintangan bahan pengalir. i. Explain briefly the relationship between those FOUR (4) factors with resistance of conductor materials. Terangkan secara ringkas hubungkait antara EMPAT (4) faktor tersebut dengan rintangan bahan pengalir. [8 marks] [8 markah] CLO3 ii. Calculate the resistance of an aluminium cable which has length of 1.5 km. Given that the diameter for the wire is 10 mm and resistivity is 0.025.m. Kirakan rintangan bagi kabel aluminium, panjangnya adalah 1.5km. Diberi, diameter kabel tersebut adalah 10mm dan kerintangannya adalah 0.025.m. [4 marks] [4 markah] (b) Define Power and state its formula. Nyatakan maksud kuasa dan nyatakan formula bagi kuasa. [3 marks] [3 markah] 2 SULIT

CLO3 (c) A toaster has current of 5A and home voltage supply is 240V. Calculate the power consumption needed for the toaster. Satu pembakar roti menggunakan arus sebanyak 5A dan voltan bekalan rumah adalah sebanyak 240V. Kirakan penggunaan kuasa yang diperlukan oleh pembakar roti tersebut. [3 marks] [3 markah] (d) Ohm s Law states that the current through a conductor is directly proportional to the potential difference (voltage) and inversely proportional to the resistance. Hukum Ohm menyatakan bahawa arus yang mengalir melalui sesuatu pengalir berkadar terus dengan beza keupayaan (voltan) dan berkadar songsang dengan rintangan. i. State the formula for Ohm s Law. Nyatakan formula bagi Hukum Ohm. [1 marks] [1 markah] CLO3 ii. A copper wire has a length of 160 m and a diameter of 1.00 mm. If the wire is connected to a 1.5-volt battery, calculate current flows through the wire. Given, the copper ρ = 1.72 x 10-8 Ωm. Satu wayar tembaga mempunyai panjang 160 m dan diameter 1.00 mm. Jika wayar disambungkan kepada bateri 1.5 volt, kirakan arus mengalir melalui wayar. Diberi, tembaga ρ = 1.72 x 10-8 Ωm. [6 marks] [6 markah] 3 SULIT

QUESTION 2 SOALAN 2 CLO2 (a) Define and explain static electricity with an appropriate example. Berikan definisi elektrik statik dan jelaskan kewujudannya dengan contoh yang sesuai. CLO2 (b) By refering to Figure 1, explain THREE (3) factors that affect the strength of electromagnetism when it is connected to a power supply. Merujuk kepada Rajah 1, jelaskan TIGA (3) faktor yang mempengaruhi kekuatan elektro magnet sekiranya konduktor tersebut disambungkan kepada sumber kuasa. Metal core Coil Figure 1 Rajah 1 [12 marks] [12 markah] CLO2 (c) Determine the direction of induced current in the coil using Right hand Rule 4 SULIT

according to the conditions given below. Tentukan arah arus yang teraruh di dalam gegelung menggunakan Hukum Tangan Kanan berdasarkan keadaan-keadaan yang berikut. i. Bar magnet moves into the coil Magnet bar bergerak masuk ke dalam gegelung. ii. Bar magnet moves into the coil Magnet bar bergerak masuk ke dalam gegelung. iii. Bar magnet moves from the coil Magnet bar bergerak keluar dari gegelung. iv. Bar magnet moves from the coil Magnet bar bergerak keluar dari gegelung. QUESTION 3 SOALAN 3 (a) Define the meaning of test equipment. Takrifkan maksud bagi alatan pengujian. (b) Explain the source of error in measurement below. Terangkan punca keralatan dalam pengukuran di bawah. [8 marks] [8 markah] [2 marks] [2 markah] 5 SULIT

i) Resolution. Resolusi. ii) Repeatability. Kebolehulangan. iii) Sensibility or scale factor. Kesensitifan atau faktor skala. [9 marks] [9 markah] (c) List TWO (2) types of oscilloscope. Senaraikan DUA (2) jenis osiloskop. [2 marks] [2 markah] (d) Sketch the diagram of multimeter and explain how to use a multimeter to measuring RPM (revolution per minute) test. Lakarkan gambarajah multimeter dan terangkan bagaimana menggunakan multimeter untuk mengukur ujian RPM (kitaran per minit). [12 marks] [12 markah] QUESTION 4 SOALAN 4 (a) List three (3) benefits of multiplex wiring system in a vehicle. Senaraikan tiga (3) faedah sistem pendawaian multipleks di dalam kenderaan. [3 marks] [3 markah] 6 SULIT

(b) Describe briefly a closed loop systems and explain an example related in a vehicle system. Terangkan dengan ringkas sistem putaran tertutup dan terangkan contoh yang berkaitan dengan sistem kenderaan. [6 marks] [6 markah] (c) There were three types of colour code reference systems which have been used for standardization in vehicle wiring system. Explain SIX (6) types of colour code including their symbols and usages for British Standard system (BS AU 7a:1983). Terdapat tiga jenis rujukan sistem kod warna yang telah digunakan untuk keseragaman di dalam sistem pendawaian kenderaan. Terangkan ENAM (6) jenis kod warna termasuk dengan simbol dan penggunaannya untuk sistem Piawaian British (BS AU 7a:1983). [9 marks] [9 markah] (d) Name FOUR (4) materials used to make a contact in a switch and sketch a complete diagram of switch with sliding contacts method. Namakan EMPAT (4) bahan yang digunakan untuk membuat penyambungan dalam suiz dan lukiskan satu gambarajah lengkap suiz yang menggunakan kaedah penyambungan gelongsor. QUESTION 5 SOALAN 5 [7 marks] [7 markah] (a) Explain the functions of the open loop system for automotive electrical. Huraikan fungsi sistem putaran terbuka untuk elektrikal automotif. [4 marks] [4 markah] 7 SULIT

(b) List FOUR (4) examples of the open loop system for automotive electrical. Senaraikan EMPAT (4) contoh sistem putaran terbuka untuk elektrikal automotif. [4 marks] [4 markah] (c) Explain the importance of colour code and terminal designations. Huraikan kepentingan kod warna dan rekabentuk terminal. [6 marks] [6 markah] (d) List FIVE (5) colours and codes which were introduced by Ford company (Europe Standard). Senaraikan LIMA (5) warna dan kod warna yang telah diperkenalkan oleh Syarikat Ford (Piawai Eropah). (e) In automotive electrical system, harness design is a part of component that we consider before wiring diagram. Elaborate the elements that need to be considered in harness design. Dalam sistem elektrikal automotif, rekabentuk harness perlu diambil kira dalam diagram pendawaian. Huraikan elemen yang perlu ada dalam rekabentuk harness. [6 marks] [6 markah] QUESTION 6 SOALAN 6 (a) Airbag is the most effective restraint system in the event of a serious accident. List FIVE (5) main components of a basic airbag system. 8 SULIT

Beg Udara adalah sistem keselamatan yang paling berkesan ketika kemalangan. Senaraikan LIMA (5) komponen asas yang utama bagi sistem beg udara. (b) Speaker and Digital Audio Broadcast (DAB) are two in-car multimedia components. State the other FIVE (5) in-car multimedia components. Pembesar suara dan Digital Audio Broadcast (DAB) adalah antara komponen multimedia di dalam kenderaan. Senaraikan LIMA (5) komponen multimedia di dalam kenderaan yang lain. (c) Central Door Locking System is one of the common features for passenger vehicle nowadays. (i) Sketch the diagram for the system. [3 marks] (ii) State SIX (6) basic components for the system. [3 marks] (iii) Explain the basic operation for the system. [4 marks] Sistem Kunci Pintu Berpusat merupakan ciri-ciri asas kenderaan penumpang masa kini. (i) Lakarkan gambarajah sistem tersebut. [3 markah] (ii) Nyatakan ENAM (6) komponen asas system tersebut. [3 markah] (iii) Terangkan operasi asas system tersebut. [4 markah] (d) Explain FIVE (5) features for the Radio Data System (RDS). Terangkan LIMA (5) ciri-ciri Radio Data System (RDS) 9 SULIT

SOALAN TAMAT 10 SULIT