kedah- paper 2
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8/8/2019 Kedah- Paper 2
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Section A
Bahagian A
[20 marks]
[20 markah]
Answer one question only
Jawab satu soalan sahaja
welding
Figure 1
Rajah 1
1. Figure 1 shows one chandelier which is made from wrought iron bar. All joint are using the
arc welding method.
Rajah 1 menunjukkan sebuah pemegang lilin yang dibuat menggunakan keluli. Semua sambungan adalah menggunakan kaedah kimpalan arka.
a) Explain the work process of arc welding.
Terangkan proses kerja kimpalan arka.[8 marks]
[8 markah]
b) State two advantages and two disadvantages of arc welding
Nyatakan dua kebaikan dan dua keburukan kimpalan arka.[4 marks]
[4 markah]
c) State the three differentiate between arc welding and oxy-acetylene welding
Nyatakan tiga perbezaan antara kimpalan arka dan kimpalan gas oksi-asetelina.[6 marks]
[6 markah]
d) List 2 types of other permanent joint.
Senaraikan 2 jenis sambungan kekal yang lain.[2 marks]
[2 markah]
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Figure 2
Rajah 2
2. Figure 2 shows a simple block diagram for TV broadcasting system including transmitter and
receiver.
Rajah 2 menunjukkan gambarajah blok ringkas sistem siaran TV yang terdiri dari penghantar dan penerima.
a). Name the blocks labeled X,Y and Z.
Namakan bahagian yang bertanda X, Y dan Z.
[6 marks][6 markah]
b). Sketch the composite video signal where have synchronous pulse and blanking pulse at TVtrasmitter.
Lakarkan isyarat video rencam yang mengandungi denyut segerak dan denyut padaman dibahagian penghantar TV.
[4 marks]
[4 markah]
c) Explain the operation of TV broadcasting system.
Terangkan kendalian sistem siaran TV tersebut.
[10 marks]
[10 markah]
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Synchronous
Pulse Denyut Segerak
AM
Transmitter Penghantar
AM
Y
Z
AM Receiver Penerima AM
X
MicrophoneMikrofon
TV cameraKamera TV
TRANSMITTER PENGHANTAR
RECEIVER PENERIMA
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Section B
Bahagian B
[20 marks]
[20 markah]
Answer one question only.
Jawab satu soalan sahaja
3. Figure 3(a) shows a floor plan of a house. The height to the underside of the ceiling
from the floor level is 3.5 m. Figure 3(b) shows part of a boundary wall of a house. Rajah 3(a) menunjukkan pelan lantai sebuah rumah. Tinggi ke bahagian bawah siling
dari aras lantai ialah 3.5 m. Rajah 3(b) menunjukkan sebahagian daripada tembok sempadan sebuah rumah.
13.0 m
8.0 m
Figure 3(a)
Rajah 3(a)
Figure 3(b)
Rajah 3(b)
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10.5 m
4.5 m
2.0 m
Tembok
sempadan0.4
m0.4m
2.0m
0.3
m
1.0
m
Asas jalur
Aras
tanah
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The details of construction work and the rate are as follows : Butiran kerja binaan dan kadarnya adalah seperti berikut :
Construction Work Detail
Butiran Kerja Binaan
Rate
Kadar
Concrete strip foundation Asas jalur konkrit
[12.0m × 0.8m × 0.3m] RM300/m3
Concrete posts
Tiang konkrit
[1.7m × 0.4m × 0.4m] RM220/m3
Plastered boundary wall for open terrace areaTembok sempadan bahagian teres terbuka
[1.5m × 6.0m] RM80/m2
Table 1 Jadual 1
Calculate : Hitungkan :
(a) The cost of constructing the house, if the rate is : Kira kos pembinaan rumah itu, jika kadar kos ialah :
• Walled up area : RM550.00/m2
Bahagian berdinding : RM550.00/m 2
• Open terrace : RM300.00/m2
• Bahagian terbuka : RM300.00/m 2
[8 marks][8 markah]
(b) Use Appendix 1 on page 13, calculate the total cost to build the stripfoundation and the concrete columns for the house based on the
information in Table 1. Dengan menggunakan Lampiran 1 pada muka surat 13, hitungkan kos
untuk membina asas jalur dan semua tiang konkrit bagi rumah itu
berdasarkan maklumat dalam Jadual 1.
[12 marks][12 markah]
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Figure 4
Rajah 4
4. A land survey takes place by a group of surveyor before a project was done have a profile as
shown in Figure 4. A profile of leveling area had been done by a chainage of 20 m.
Satu tinjauan tapak telah dilakukan sebelum projek dijalankan mendapati profil bagi kerjaukur aras adalah seperti dalam Rajah 4. Profil bagi aras tersebut dijalankan dengan rantaianbagi setiap 20 m.
(a) Complete the leveling documentation in Table 2. (Appendix 5)
Lengkapkan dokumentasi aras dalam Rajah 2.(Lampiran 5)[15 marks]
[15 markah]
(b) Plot the leveling surface in Figure 4(a). (Appendix 5)
Plotkan permukaan aras pada Rajah 4(a). (Lampiran 5)
[5 marks]
[5 markah]
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0.5900
1.210 0.730 0.930
1.420 1.500 0.980 0.430
A
BC
D E
F
BM1
RL
= 75.550
BM2
RL
= 76.300
0.930
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Section C
Bahagian C
[20 marks]
[20 markah]
Answer all questions
Jawab semua soalan
5. Figure 5 shows a book shelf with height 5 meter from floor. This book shelf were divided in
some rows as shown. A ladder is used to fetch and keep the book after reading.
Rajah 5 menunjukkan sebuah almari buku yang berketinggian 5 meter dari lantai. Almaritersebut dibahagikan kepada beberapa tingkat seperti gambarajah. Sebuah tangga digunakan
bagi mengambil dan menyimpan semula buku yang telah dibaca.
Figure 5
Rajah 5
Several problems occur when using the ladder,
Terdapat beberapa masalah semasa menggunakan tangga tersebut,
• The ladder are made from wood and not lasting.
Tangga diperbuat daripada kayu dan tidak tahan lama.
• The ladder are unstable and can cause the accident.
Tangga tersebut tidak stabil semasa menggunakannya dan boleh menyebabkan pengguna terjatuh.
• The ladder must lift in order to change the position needs.
Tangga tersebut perlu diangkat semasa hendak mengubahkan kedudukannya.
(a) With the aid of sketch, suggest and design a tool which can overcome the problems
mentioned above.
Dengan bantuan lakaran, cadang dan rekabentukkan satu tangga bersesuaian yang dapat mengatasi masalah di atas.
[16 marks]
[16 markah]
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(b) Give one materials which are suitable to make this ladder.
Berikan satu bahan yang sesuai untuk menghasilkan tangga tersebut.[2 marks]
[2 markah]
(c) State TWO mechanical properties for the material that you choose in (b).
Nyatakan DUA sifat mekanik bagi bahan yang anda pilih di dalam (b).[2 marks]
[2 markah]
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Figure 6
Rajah 6
6. Figure 6 shows 3 types of internal combustion engine.
Rajah 6 menunjukkan 3 jenis enjin pembakaran dalam.a) Name all the types of engine stated.
Namakan ketiga-tiga jenis enjin tersebut.[3 marks]
[3 markah]
b) State the current stroke for each engine shown in Figure 6.
Nyatakan keadaan lejang untuk setiap enjin ditunjukkan dalam Figure 6 [3 marks]
[3 markah]
c) State 2 advantages and 2 disadvantages for each of the engine above
Nyatakan dua kebaikan dan dua kelemahan bagi setiap enjin di atas .[4 marks]
[4 markah]
d) Choose one of the engine given above and with the aid of sketch, explain the principles
of engine stroke.
Pilih mana-mana satu daripada jenis enjin di atas dan dengan bantuan lakaranterangkan prinsip kitaran lejang berkenaan.
[10 marks]
[10 markah]
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(i) (ii) (iii)
Exhaustvalve
Pistonmoves up
Exhaustvalve
Intakeport
Intakevalve
Exhaust
port
Transfer port
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Figure 7
Rajah 7
7. Figure 7 shows the machine operation at a factory. Two motors used in this operation.
Rajah menunjukkan operasi mesin di sebuah kilang. Dua buah motor digunakan di dalamoperasi tersebut.The operation system is as the following :-
Kendalian motor bagi operasi mesin tersebut adalah seperti berikut :
M2 motor do not start before motor M1 motor
Motor M2 tidak boleh dihidupkan sebelum M1.
If M1 motor stopped, M2 motor will stop
Jika M1 motor berhenti, M2 motor turut berhenti.
If overloaded happen at whichever motor ,it will cause both of them to stop
Jika berlaku beban lampau pada mana-mana motor, kedua-dua motor akan berhenti
Appendix 1,2 and 3 is the suggestion of connecting circuit. Based on the appendix
Lampiran 1, 2 dan 3 ialah cadangan sambungan litar. Berdasarkan lampiran yang diberi.
a. (i) Choose the suitable machine operation. Give your reason whether you accept
or reject the suggestion circuit
Pilih litar yang sesuai dengan operasi mesin tersebut. Beri alasan bagi setiap
litar sama ada anda menolak atau menerima litar tersebut.[6 marks]
[6 markah]
(ii). Explain the operation of the circuit that you choose at a (i). Terangkan kendalian litar yang telah anda pilih dan terima di a (i).
[8 marks]
[8 markah]
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Product Produk
M1
M2
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b. Complete the circuit that you choose with these properties:
Lengkapkan litar yang anda pilih bagi memenuhi ciri-ciri berikut :-
(i). Pilot lamp (Yellow) is on to show that the power sources is supplied and off
when M1 is started.
Lampu pandu (kuning) menyala untuk menunjukkan ada bekalan elektrik danakan padam bila M1 hidup.
(ii). Pilot lamp (Green) is on when M1 and M2 motor is started
Lampu pandu (hijau)akan menyala apabila M1 dan M2 dihidupkan.
(iii) Pilot lamp (Red) is on to show when M1 and M2 is stopped.
Lampu pandu (merah) akan menyala untuk menunjukkan M1 dan M2berhenti.
[6 marks]
[6 markah]
END OF QUESTION PAPER
KERTAS SOALAN TAMAT
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Appendix 1
Lampiran 1
L
Litar A
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PL
PH1
PM1
P1
P1
PH2
PM2
P2
P2
GBL
N
Motor 2
Motor 1
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Appendix 2
Lampiran 2
L
Litar B
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PL
PH1
PM1
P1
P1
PH2
PM2
P2
P2
GBL1
N
Motor 1
Motor 2
P1
GBL2
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Appendix 3
Lampiran 3
L
Litar C
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PL
PH1
PM1
P1
P1
P1
PM2
P2
P2
GBL1
N
Motor 1
Motor 2
GBL2
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Appendix 4
Lampiran 4
Dimension Form :
Borang Dimensi :
Number
Nombor
Size
Saiz
Volume
Isipadu
Remarks
Keterangan
Digging and building the strip foundation.Mengorek dan membina asas jalur.
Building the concrete column.Membina tiang konkrit.
Building the plastered brick wall.Membina tembok bata berlepa.
Building the plastered brick wall.Membina tembok bata berlepa.
Building the plastered brick wall.Membina tembok bata berlepa.
Building the plastered brick wall.Membina tembok bata berlepa.
Building the plastered brick wall.Membina tembok bata berlepa.
List of Quantity Form : Borang Senarai Kuantiti :
Work Detail
Butiran Kerja
Unit
Unit
Quantity
Kuantiti
Rate
Kadar
Total
Jumlah
Digging and building strip foundation.Mengorek dan membina asas jalur.
Building concrete column.Membina tiang konkrit.
Building the plastered brick wall.Membina tembok bata berlepa.
Overall cost. Kos keseluruhan.
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Appendix 5
Lampiran 5
Back Sight
Pandangan
Belakang
Intermediate
Sight
Pandangan
Antara
Fore Sight
Pandangan
Hadapan
Rise
Naik
Fall
Turun
Reduced
Level
Aras Laras
Chainage
Rantaian
Remark
Catatan
0.590 75.550 BM1 = 75.550
0Point A
Titik A
20Point B
Titik B
40Point C
Titik C
1.420 0.930 60Transfer point D
Titik pindah D
80Point E
Titik E
100Point FTitik F
0.430 120 BM2 = 76.300
Error
Ralat =
Table 2
Jadual 2
Chainage
Rantaian 0 . 0
0
2 0 . 0
0
4 0 . 0
0
6 0 . 0
0
8 0 . 0
0
1 0 0 . 0
0
1 2 0 . 0
0
Figure 4(a)
Rajah 4(a)
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