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Worksheets

Latihan Telekomunikasi

Total questions: 125

Worksheet time: 2hrs 33mins

Name
Class
Date
1.

Apa tujuan pemeliharaan infrastruktur kereta api?

a)

Untuk menjaga keandalan infrastruktur kereta api agar siap operasional

b)

Untuk memastikan utilitas dan kinerja infrastruktur kereta api

c)

Keduanya (a) dan (b) benar

2.

Jenis pemeliharaan apa yang dilakukan pada peralatan yang tidak dijadwalkan sesuai dengan siklus tertentu atau yang baru ketika sudah rusak?

a)

Pemeliharaan kerusakan

b)

Pemeliharaan preventif

c)

Pemeliharaan korektif

3.

Jenis pemeliharaan apa yang dilakukan secara tidak terjadwal sesuai dengan siklus tertentu, dengan mengganti atau memperbaiki komponen yang rusak?

a)

Perbaikan

b)

Pemeliharaan preventif

4.

Jenis pemeliharaan apa yang dilakukan untuk mencegah kerusakan atau gangguan yang mungkin terjadi?

a)

Pemeliharaan prediktif

b)

Pemeliharaan preventif

c)

Pemeliharaan korektif

5.

Apa yang dimaksud dengan Transmisi?

a)

Pengiriman

b)

Saluran

c)

Penerimaan

6.

Apa fungsi dari Transmisi?

a)

Sebuah alat atau sarana untuk menyampaikan sesuatu

b)

Sebuah alat pengukur

c)

Sebuah alat untuk mendeteksi sesuatu

7.

Manakah di antara berikut ini yang termasuk dalam peralatan Transmisi?

a)

Kabel Optik

b)

Kawat Tembaga

c)

Keduanya (a) dan (b) benar

8.

What is the type of periodic maintenance performed on switches?

a)

Daily

b)

Bi-weekly

c)

Biennial

9.

Jenis pemeliharaan berkala apa yang dilakukan pada radio lokal di bengkel?

a)

Pemeliharaan kabel

b)

Pengukuran

c)

Keduanya (a) dan (b) benar

10.

Apa frekuensi microwave yang digunakan di PT KAI?

a)

2 MHz

b)

8 MHz

c)

8 GHz

11.

Apa frekuensi stasiun dasar yang digunakan di PT KAI?

a)

SHF

b)

VHF

c)

UHF

12.

Peralatan microwave terdiri dari:

a)

ODU

b)

IDU

c)

ODU, IDU, IO, Antena dan Kabel

13.

Apa yang dimaksud dengan Frequency Shift?

a)

Perbedaan antara Frekuensi Tx dan Rx

b)

Frekuensi Tx

c)

Frekuensi Rx

14.

Apa frekuensi pergeseran yang digunakan di PT KAI?

a)

119 MHz

b)

128 MHz

c)

Keduanya (a) dan (b) benar

15.

Apa frekuensi shift yang digunakan di PT KAI?

a)

119MHz

b)

128MHz

c)

Keduanya (a dan b) benar

16.

Berapa bandwidth yang digunakan di PT KAI?

a)

14MHz

b)

28MHz

c)

Keduanya (a dan b) benar

17.

Jenis peralatan microwave apa yang digunakan di PT KAI?

a)

Radio dalam ruangan

b)

Radio luar ruangan

c)

Keduanya (a dan b) benar

18.

Peralatan apa yang digunakan untuk pengiriman kereta?

a)

Tabel Layanan/PK, BS, WS

b)

Radio Loc, Transmisi

c)

Keduanya benar

19.

Menurut peraturan, radio mana yang termasuk dalam Item Go/No-Go?

a)

PD19

b)

PM32

c)

PD16

20.

Alat apa yang digunakan untuk mengukur daya/transmisi stasiun basis?

a)

Meter SWR

b)

Multimeter

c)

Ampermeter

21.

Ketika mengukur stasiun basis, jika meter SWR menunjukkan 6, bagaimana kondisi stasiun basis tersebut?

a)

Baik

b)

Buruk

c)

Tidak baik

22.

Alat apa yang digunakan untuk mengukur transmisi radio gelombang mikro?

a)

OTDR

b)

Ampermeter

c)

Pengukur daya

23.

Apa fungsi dari antena?

a)

Memperkuat penerima dan daya transmisi

b)

Melemahkan daya transmisi

c)

Keduanya (a dan b) benar

24.

Apa frekuensi IF untuk radio gelombang mikro?

a)

1MHz

b)

70MHz

c)

2MHz

25.

Semakin besar ukuran antena, apa yang dipengaruhi?

a)

Daya transmisi

b)

Penerimaan

c)

Keduanya (a dan b) benar

26.

Untuk mengamankan peralatan dari petir, apa yang harus dipasang?

a)

Pem grounding

b)

Arrester

c)

Keduanya (a dan b) benar

27.

Apa itu serat optik?

a)

Jenis media transmisi yang terbuat dari kaca

b)

Terbuat dari tembaga

c)

Keduanya (a dan b) benar

28.

Alat apa yang digunakan untuk mengukur serat optik?

a)

Multimeter

b)

Megermeter

c)

OTDR

29.

SDH adalah hierarki multiplexing yang berdasarkan pada?

a)

Sinkron

b)

Asinkron

c)

Keduanya (a dan b) benar

30.

PDH adalah hierarki multiplexing yang berdasarkan pada?

a)

Synchronous

b)

Asynchronous

c)

Keduanya (a dan b) benar

31.

Alat apa yang digunakan untuk menghubungkan serat optik?

a)

Las

b)

Pengelasan

c)

Splicer

32.

Jenis konektor SC, FC, ST digunakan pada jenis kabel apa?

a)

Tembaga

b)

Seng

c)

Serat optik

33.

What is the ideal depth for fiber optic cable installation?

a)

5–10cm

b)

10–20cm

c)

50–100cm

34.

Apa itu atenuasi kabel fiber optik?

a)

0–1dBm

b)

1–1.5dBm

c)

2–3.5dBm

35.

Apa yang dimaksud dengan Switching atau PABX?

a)

Perangkat untuk menghubungkan komunikasi telepon

b)

Perangkat untuk switching

c)

Keduanya (a dan b) benar

36.

Berapa panjang aapian?

a)

5–10cm

b)

10–20cm

c)

50–100cm

37.

Apa nilai Redamankabelfiberoptic?

a)

0–1dBm

b)

1–1.5dBm

c)

2–3.5dBm

d)

2–3.5dBm

38.

Apa yang dimaksud dengan Apayangdimaksuddengan SwitchingatauPABX?

a)

Perangkat penghubung untuk komunikasi telepon

b)

Perangkat lunak

c)

Perangkat keras

39.

What is the type/brand of PABX?

a)

Ericson

b)

Panasoni

c)

Both a and b are correct

40.

Berapa voltase yang dibutuhkan untuk pusat PABX?

a)

5V/DC

b)

48V/AC

c)

48V/DC

41.

Apa istilah untuk menghubungkan satu perangkat telepon ke perangkat telepon lainnya?

a)

Pencarian

b)

Transfer

c)

Keduanya benar

42.

Berapa voltase perangkat telepon saat melakukan panggilan?

a)

12V

b)

90V/AC

c)

48V/DC

43.

Jenis perangkat telepon apa yang ada?

a)

Telepon analog

b)

Telepon digital

c)

Telepon IP

d)

Semua benar

44.

Jenis telepon apa yang digunakan antara stasiun?

a)

Telepon T

b)

Telepon Blok

c)

Semua benar

45.

Apa alat yang digunakan untuk mengukur grounding?

a)

Avometer

b)

Meger

c)

Meter grounding

46.

Manakah di antara berikut ini yang tidak termasuk dalam peralatan radio untuk pengiriman Kereta?

a)

Stasiun dasar

b)

Stasiun Jalan

c)

Perangkat TOKA

47.

Jenis panggilan apa yang harus diprioritaskan oleh PK?

a)

Panggilan Reguler/RTS

b)

Panggilan Darurat

c)

Panggilan PC/prioritas

48.

Apa periode pemeliharaan yang benar untuk peralatan PK menurut standar pemeliharaan Sintel?

a)

Pemeliharaan harian

b)

Pemeliharaan 3 bulan dan tahunan

c)

Pemeliharaan 2 minggu

49.

Apa pernyataan yang paling akurat untuk komunikasi menggunakan pengaturan kereta?

a)

Pengemudi dengan perangkat HT

b)

PK/PPKP dengan pengemudi

c)

Pengemudi dengan PPKA

50.

Apa fungsi dari perangkat PK?

a)

Memantau operasi kereta

b)

Memberhentikan kereta

c)

Mengendalikan operasi kereta

51.

If there is a report that one train radio cannot communicate with PPK, what should be done?

a)

Replace the radio

b)

Ask PPK about the condition

c)

Request to replace the locomotive

52.

What is the most accurate time to check the radio schedule?

a)

Locomotive time for service

b)

Radio time at the station

c)

Radio time during the journey

53.

Why should the driver change channels according to the signal 8L?

a)

So the driver can communicate with the section

b)

Because of the different daop area

c)

So the driver can talk with HT

54.

When can the TOKA device be used for train travel communication?

(a)  

55.

What should be done if the HT device wants to communicate with PPKP?

a)

Set the frequency of PK

b)

Set the frequency of HT according to the location of the base station where HT is located

c)

Press the transmit button directly

56.

What is the effect if the microwave radio power is less than the standard?

a)

High BER

b)

Receiver interference is small

c)

Both (a) and (b) are correct

57.

At what standard is the BER of microwave used in PT KAI?

a)

10 to the power of -6

b)

10 to the power of -10

c)

10 to the power of -3

58.

What does the term BER mean in microwave radio?

a)

Error that occurs

b)

Error that is allowed

c)

Error from microwave

59.

What is the effect if the VSWR is high?

a)

Power decreases

b)

Reception decreases

c)

It's okay

60.

What is meant by repair/maintenance?

a)

Maintenance done in a way that is not scheduled with a certain cycle

b)

Maintenance done in a scheduled manner with a certain cycle

c)

Both (a) and (b) are correct

61.

What is meant by preventive maintenance?

a)

Maintenance done to prevent damage or prevent possible disruptions

b)

Maintenance done in an unscheduled manner with a certain cycle

c)

Both (a) and (b) are correct

62.

What is meant by railway infrastructure?

a)

Equipment to support train transportation

b)

Carriages and trains

c)

Both (a) and (b) are correct

63.

What is referred to as a repeater?

a)

As a signal booster

b)

As a signal attenuator

c)

As a signal repeater

64.

Why is a repeater needed?

a)

Because the received signal is weak

b)

Because the area has many mountains

c)

Because it passes through the sea

65.

What tools are used for maintenance of switches?

a)

Multimeter

b)

Ampere Clamp

66.

What is the abbreviation of TOKA?

a)

Telephone of the Train

b)

Automatic Train Telephone

c)

PABX Telephone

67.

If we call one of the phones and hear a long beep, what does it mean?

a)

The phone is connected but not picked up

b)

The phone is still in use

c)

Both are correct

68.

If we call one of the phones and hear a short beep, what does it mean?

a)

The phone is connected but not picked up

b)

The phone is still in use

c)

Both are correct

69.

What command is used to view the analog phone number?

a)

EXDDP

b)

KSDDP

c)

EXTEI

70.

What command is used to view the digital phone number?

a)

EXDDP

b)

KSDDP

c)

EXTEI

71.

What command is used to create a digital phone number?

a)

EXDDP

b)

KSTEI

c)

EXTEI

72.

What command is used to create an analog phone number?

a)

EXDDP

b)

KSTEI

c)

EXTEI

73.

What is the relationship between Limbu and a Switch Group?

a)

ELU

b)

TLU

c)

TMU

d)

NIU

74.

If the telephone connection between regions, for example, Bandung and Jakarta, uses TLU76/TLU50, how many phones can be connected simultaneously?

a)

Only one phone

b)

30 phones

c)

15 phones

75.

In Switching or PABX, what does the term Incoming mean?

a)

Outgoing Call

b)

Incoming Call

c)

Both are correct

76.

In Switching or PABX, what does the term Outgoing mean?

a)

Outgoing Call

b)

Incoming Call

c)

Both are correct

77.

If the telephone connection between regions, for example, Bandung and Jakarta, uses TLU23, how many phones can be connected simultaneously?

a)

Only one phone

b)

30 phones

c)

4 phones

78.

In a single train dispatching, how many base stations can be installed?

a)

One Base Station

b)

Three Base Stations

c)

Any number of Base Stations

79.

In a single train dispatching, how many frequencies can be installed?

a)

One Frequency

b)

Three Frequencies

c)

Any number of Frequencies

80.

If in a single train dispatching there are already 3 frequencies installed, what will you do if you want to add a base station?

a)

Add a new frequency

b)

Repeat the existing frequency

c)

Any number of options

81.

If in a single train dispatching there is a Blank Area, what will you do?

a)

Increase the power of the Base Station

b)

Add a new base

c)

Both are correct

82.

When the PPKP presses the emergency button, will there be an emergency sound?

a)

All way stations and radio locators will hear the emergency sound

b)

Only one section that hears the emergency call

c)

Two daops/divreys that hear the emergency call

83.

When should the PPKA press the PC button (Priority Call)?

a)

For regular calls

b)

For prioritized calls

c)

In case of emergency

84.

If the PPKP will talk to the WSA or radio locator, which button will be pressed?

a)

Send button

b)

Step on the pedal

c)

Both are correct

85.

If the PPKA will talk to the PPKP, which button will be pressed?

a)

Push button

b)

Step on the pedal

c)

Both are correct

86.

In the microwave radio system, the term line of sight means what?

a)

Direct signal received

b)

Reflected signal

c)

Signal transmitted

87.

In the microwave radio system, the term signal reflection means what?

a)

Direct signal received

b)

Signal received from reflection

c)

Signal transmitted

88.

In the microwave radio system, the term Padding means what?

a)

Signal received will be affected by the weather in the area

b)

Reflected signal

c)

Signal transmitted

89.

Why must Return to Loss be minimized?

a)

Affects transmission power

b)

Unclear

90.

Why must Return to Loss be as small as possible?

a)

Affecting transmission power

b)

Affecting reception

c)

No effect

91.

In microwave radio systems, what does Return to Loss mean?

a)

Power reflected by the antenna and input into the antenna

b)

Signal reflection

c)

Signal transmitted

92.

To convert radio frequency that travels in conductors into electromagnetic waves in free space, what is used?

a)

ODU

b)

IDU

c)

Antenna

93.

The process of wave propagation from Transmitter to Receiver is called?

a)

Sensitivity

b)

Propagation

c)

Space Loss

94.

What is Reflection?

a)

Signal received by the receiver from reflection

b)

Direct signal received

c)

Signal transmitted

95.

What is Diffraction?

a)

Propagation that passes through a sufficiently large object

b)

Propagation that passes through a sufficiently small object

c)

Both are correct

96.

What is Scattering?

a)

Propagation that passes through a sufficiently large object

b)

Propagation that passes through a sufficiently small object

c)

Both are correct

97.

In microwave radio configuration, what does 1+0 mean?

a)

One IDU plus one ODU

b)

One IDU plus two ODUs

c)

Two IDUs plus two ODUs

98.

In microwave radio configuration, what does 1+1 mean?

a)

One IDU plus one ODU

b)

One IDU plus two ODUs

c)

Two IDUs plus two ODUs

99.

What is Diversity?

a)

Microwave radio configuration using two antennas

b)

Microwave radio configuration using one antenna

c)

Both are correct

100.

The send button or pedal on the PPKP/PK aircraft is used when?

a)

PPKP receives a call

b)

PPKP is speaking

c)

Both are correct

101.

To connect the service PK/PPKP uses?

a)

Transmission equipment

b)

Multiplexer

c)

Both are correct

102.

The microwave radio used in PT KAI is?

a)

Yagi

b)

Parabola

c)

Both are correct

103.

The Radio Way Station (WS) used in PT KAI is?

a)

Yagi

b)

Parabola

c)

Both are correct

104.

What is the difference when using UHF frequency compared to VHF?

a)

Longer range

b)

Clearer sound

c)

Both are correct

105.

What is the difference when using VHF frequency compared to UHF?

a)

Longer range

b)

Clearer sound

c)

Both are correct

106.

What is the difference if we use VHF frequency compared to UHF?

a)

The range is farther

b)

The sound is clearer

c)

Both are correct

d)

The range is farther

107.

What type of maintenance is it if we replace a damaged ODU?

a)

Repair

b)

Preventive maintenance

c)

Both are correct

d)

Repair

108.

When is battery maintenance scheduled?

a)

Every day

b)

Once a year

c)

Every two weeks

d)

Every two weeks

109.

How often should the generator be turned on during scheduled maintenance?

a)

Once a month

b)

Every day

c)

Once a week

d)

Once a week

110.

What is a repeater?

a)

As a signal booster

b)

As a signal attenuator

c)

As a signal repeater

d)

As a signal booster

111.

Explain what is meant by maintenance on railway facilities?

4 lines
112.

Explain what is meant by maintenance with the Preventive Maintenance method?

4 lines
113.

Explain maintenance in the radio room.

4 lines
114.

Explain how to maintain the locomotive radio?

4 lines
115.

Explain how to maintain the way station?

4 lines
116.

How many sections are there in the train patching area?

4 lines
117.

Explain if you supervise the maintenance of switches at a station?

4 lines
118.

Please explain how to monitor the child during the maintenance of the switches at one of the stations?

a)

Check if the tools are suitable for the equipment being maintained

b)

Check safety such as work clothes and vests

c)

Has the report been submitted to the PPKA?

d)

Checklist book

119.

Please explain how to check the work results of the child during the maintenance of the radio room at one of the stations?

a)

Check if the tools are suitable for the equipment being maintained

b)

Check safety such as work clothes and vests

c)

Check the red book

d)

Checklist book

120.

Please explain how to check the installation of the microwave radio by the third party in the radio room?

a)

Check if the microwave radio is in accordance with the standards

b)

Check the connectors

c)

Check the shopware

121.

Please demonstrate how to perform measurements on the Base station?

4 lines
122.

Please demonstrate how to perform measurements on the Way station?

4 lines
123.

Please demonstrate how to perform grounding measurements?

4 lines
124.

Please demonstrate how to perform measurements on the Radio location?

4 lines
125.

Please demonstrate how to perform measurements on the microwave?

4 lines