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8/8/2019 KL- P2 http://slidepdf.com/reader/full/kl-p2 1/11 SULIT 3764 / 2 Section A Bahagian A Answer one question only. Jawab satu soalan sahaja [20 marks] [20 markah] Figure 1 Rajah 1 Figure 1 Rajah 1 1 Figure 1 shows a component made from a mild steel plate measure 60mm x 100mm x 20mm. Rajah 1 menunjukkan satu komponen daripada plat keluli lembut berukuran 60mm x 100mm x 20mm. (a) Explain the fitting works to produce the thread labelled X.Sketch a diagram to support your answer. Terangkan kerja menggegas yang diperlukan untuk menghasilkan ulir berlabel X. Lakarkan gambarajah untuk menyokong jawapan anda. [ 16 marks ] [ 16 markah ] (b) List two tools used for each activity below: Senaraikan dua alat yang digunakan bagi setiap aktiviti di bawah i) Marking and Measuring Menanda dan mengukur 3764 / 2 ©  2010 Hak Cipta JPWPKL [Lihat sebelah SULIT 2 M 14 x 2.0 X

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SULIT 3764 / 2

Section ABahagian A

Answer one question only.Jawab satu soalan sahaja

[20 marks]

[20 markah] 

Figure 1Rajah 1

Figure 1

Rajah 1

1 Figure 1 shows a component made from a mild steel plate measure

60mm x 100mm x 20mm.

Rajah 1 menunjukkan satu komponen daripada plat keluli lembut berukuran 60mm x 100mm x 20mm.

(a) Explain the fitting works to produce the thread labelled X.Sketch

a diagram to support your answer.

Terangkan kerja menggegas yang diperlukan untuk 

menghasilkan ulir berlabel X. Lakarkan gambarajah untuk menyokong jawapan anda.

[ 16 marks ][ 16 markah ]

(b) List two tools used for each activity below:

Senaraikan dua alat yang digunakan bagi setiap aktiviti di bawah

i) Marking and Measuring

Menanda dan mengukur 

3764 / 2 ©  2010 Hak Cipta JPWPKL  [Lihat sebelahSULIT

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M 14 x 2.0

X

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ii) Cutting

Memotong [ 4 marks ]

[ 4 markah ]

2 Figure 2 shows the dweling complete with fibre optic as a computer network connection in the building.

Rajah 2 menunjukkan kediaman yang telah dilengkapi denganoptik gentian sebagai penghubung rangkaian komputer di dalamkediaman itu.

Figure 2Rajah 2 

(a) State the principle that used in the operation of fiber optictransmission.Nyatakan prinsip yang digunakan dalam kendalian sistem optik gentian.

[ 2 marks ][ 2 markah ] 

(b) State the function of :-Nyatakan fungsi :-

i. Encoder  Pengekod 

ii. Light sourceSumber cahaya

iii. Light detector  Pengesan cahaya

iv. Decoder  Penyahkod 

[ 8 marks ][ 8 markah ] 

3764 / 2 ©  2010 Hak Cipta JPWPKL  [Lihat sebelahSULIT

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(c) List THREE advantages and TWO disadvantages of fibre opticcommunication system.Senaraikan TIGA kebaikan dan DUA kelemahan perhubunganoptik gentian.

[ 10 marks ]

[ 10 markah ] 

Section BBahagian B[20 marks]

[20 markah]Answer one question onlyJawab satu soalan sahaja

Back SightPandangan

Belakang 

IntermediateSight

Pandangan Antara

Fore SightPandangan

Hadapan

Rise

Naik 

Fall

Turun

ReducedLevel

 Aras Laras

Chainage

Rantaian

Remark

Catatan

1.600 0 BMı RL = 10.750 m

1.185 10 Point A

1.790 40 Point B

1.290 70 Point C, TPı

2.275 90 Point D

3.000 100 Point E

3.290 120 Point F

2.510 140 Point G, TP2

1.980 160 Point H

2.180 180 Point I

2.970 200 Point J

2.380 210 BM2 RL = 8.315 m

Table 1Jadual 1

3 Table 1 shows the leveling of a straight line with the distance of 210 m.Jadual 1 menunjukkan data kerja luar ukur aras bagi satu garisan lurus jarak 210 m.

a) Use Appendix 1, complete the rise, fall and reduced level columnrespectively.Gunakan Lampiran 1 untuk melengkapkan lajur naik, turun danaras laras.

[ 12 marks ][12 markah ] 

b) Based on the reading on Appendix 1, plot the relevant cross sectionon Appendix 2.

3764 / 2 ©  2010 Hak Cipta JPWPKL  [Lihat sebelahSULIT

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Berdasarkan bacaan pada Lampiran 1, plotkan keratan memanjang  pada Lampiran 2.

[ 8 marks ][ 8 markah ] 

4.

Figure 3

Rajah 3

Figure 3 shows the floor plan of a house. The owner of the house plansto extent the kitchen area and the balcony area. Details of theconstruction and the rates are as follow:Rajah 3 menunjukkan pelan lantai sebuah rumah. Pemilik rumah

tersebut bercadang untuk menambah keluasan bahagian dapur (berdinding) dan bahagian anjung. Butiran kerja binaan dan kadarnyaadalah seperti berikut:

DETAIL WORK

BUTIRAN KERJA BINAAN 

RATE (RM)

KADAR (RM)

Bahagian tambahan dapur berdinding.

Walled kitchen extension section.RM 250 / m2

Bahagian anjung.

Patio extension section.

RM 350 / m2

3764 / 2 ©  2010 Hak Cipta JPWPKL  [Lihat sebelahSULIT

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Extension of patio Anjung tambahan

4.0m

4.5m

Extension of kitchenDapur tambahan

6.0m

4.0mm

5.2m

5.0m

4.0m

4.5m

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Table 2

Jadual 2 

(a) Based on Figure 3, calculate :Berdasarkan Rajah 3 , hitung :

(i) The cost of the walled kitchen extension section.Kos bahagian tambahan dapur berdinding 

(ii) The cost of the patio extension section.Kos bahagian tambahan anjung.

[ 14 marks ]

[ 14 markah ]

(b) Calculate the cost of the floor of the house, if the cost one cubic metreof concrete is RM120.00. The thickness of the concrete floor is150mm.Hitung kos bagi lantai rumah itu, jika kos bagi satu meter padu konkrit ialah RM 120.00. Tebal lantai konkrit rumah itu ialah 150mm.

[ 6 marks ][ 6 markah ]

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Section CBahagian C 

Answer all questionsJawab semua soalan

[ 60 marks ][60 markah] 

A

B

Figure 4Rajah 4

5 Figure 4 shows a pneumatic schematic circuit for a stampingaluminium tin machine in a factory.Rajah 4 menunjukkan satu litar skematik sistem kawalan pneumatik untuk mesin kerja menghentak tin aluminium dalam sebuah kilang.

While it is functioned, the piston rod will go down from A to B for thestamping work to the tin aluminium.Semasa berfungsi , rod omboh akan turun dari kedudukan A kekedudukan B untuk kerja menghentak tin aluminium.

After being tested , the control sistem has several failing condition as :Setelah diuji, sistem kawalan itu mempunyai beberapa kelemahaniaitu;

i. Piston rod will only move one way and fixed at B position.

Rod omboh hanya bergerak sehala dan kekal di kedudukan B.ii. When the pump is on , the cylinder piston will start operation instantly.

 Apabila pam dihidupkan omboh selinder akan terus beroperasi 

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iii. The speed of the piston is being uncontrolled.Kelajuan omboh itu bergerak ke atas tidak dapat dikawal 

a) With the aid of sketches, suggest the modification needed to the circuitto solve the failing condition.Dengan bantuan lakaran , cadangkan pengubahsuaian yang perlu dilakukan pada litar itu untuk mengatasi kelemahan tersebut.

[ 9 marks ][ 9 markah ] 

b) Explain the operation of the modified circuitTerangkan kendalian litar yang telah diubah suai.

[ 8 marks ][ 8 markah ] 

c) Sketch and name the component that being used to solve the noise andreleasing air problem.Lakar dan namakan satu komponen yang digunakan untuk mengatasi masalah bunyi bising dan pelepasan udara.

[ 3 marks ][3 markah ] 

 

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6 Figure 5 shows connections of motor sequential control circuit.Rajah 5 menunjukkan sambungan litar kawalan jujukan motor.

Figure 5Rajah 5 

a) Sketch the modification done to the circuit so that it will functionaccording to the sequential control.Lakar pengubahsuaian pada litar itu supaya ia dapat berfungsi mengikut kawalan jujukan .

[6 marks][6 markah] 

 b) Explain the operation of the circuit that has been modified in 6(a).

Terangkan kendalian yang telah diubahsuai di 6(a). [14 marks][14 markah] 

3764 / 2 ©  2010 Hak Cipta JPWPKL  [Lihat sebelahSULIT

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Motor M1

          T R

Motor M2

L

CBPB1(stop)

PB1(start)

C

1

C

2

C

1

PB2(start)

C

2

C

1

C

1

PB2(stop)

OR

N

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7 Figure 6 shows a children food chair. During the utilization of the chair,several problem were noted.

Rajah 6 menunjukkan sebuah kerusi makan untuk kanak-kanak.Semasa kerusi ini digunakan, beberapa masalah dikenalpasti.

Figure 6Rajah 6 

(a) With the aid of labeled sketches, describe the modification that shouldbe done to the chair to solve the problems based on the followingfactors.Dengan bantuan lakaran berlabel, terangkan pengubahsuaian yang  perlu dilakukan pada kerusi itu supaya dapat mengatasi masalah-masalah di atas berdasarkan faktor berikut.

(i) HumanManusia

(ii) FunctionFungsi 

(iii) Strength  Kekuatan

[ 12 marks ][12 markah] 

(b) State four human factors to be considered in designing the chair.Nyatakan empat   faktor manusia yang diambilkira semasamerekabentuk kerusi itu.

3764 / 2 ©  2010 Hak Cipta JPWPKL  [Lihat sebelahSULIT

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Problems had occurred:Masalah yang dihadapi:

• Difficult to place a baby  Susah untuk meletakkan bayi 

• Unstable or shakyTidak stabil atau bergoyang 

• Chair too light and no space toplace foodKerusi ringan dan tiada tempat untuk meletakkan makanan

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[ 8 marks ][ 8 markah] 

APPENDIX 1LAMPIRAN 1

Name : ………………………………… Form :………………….

Back SightPandanganBelakang

IntermediateSight

PandanganAntara

Fore SightPandangan

Hadapan

RiseNaik

FallTurun

ReducedLevelArasLaras

ChainageRantaian

RemarkCatatan

1.600 0BMı RL =

10.750 m

1.18510 Point A

1.79040 Point B

1.2902.425 70 Point C, TPı

2.27590 Point D

3.000100 Point E

3.290120 Point F

2.5103.025 140 Point G, TP2

1.980160 Point H

2.180180 Point I

2.970200 Point J

2.380 210BM2 RL =

8.315 m

[ To be used to answer Question 3 (a) ][ Digunakan untuk menjawab soalan 3 (a ) ] 

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END OF QUESTION PAPERKERTAS SOALAN TAMAT

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APPENDIX 2LAMPIRAN 2 

Name : …………………………………. Form: ……………………….

Reduced

Level

 Aras

Laras

Chainage

Rantaian

(m)

        0        1        0

        4        0

        7        0

        9        0

        1        0        0

        1        2        0

        1        4        0

        1        0        0

        1        2        0

        1        4        0

        1        6        0

[ To be used to answer Question 3 ( b ) ]

Digunakan untuk menjawab soalan 3 ( b )

3764 / 2 ©  2010 Hak Cipta JPWPKL  [Lihat sebelahSULIT

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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            3