Question
61
Apa yang menjadi tujuan utama dari proteksi katodik menggunakan anoda seng?
What is the main purpose of cathodic protection using zinc anodes?
Options
a
Mencegah terjadinya korosi pada struktur logam.
To prevent corrosion on metal structures.
b
Meningkatkan kekuatan struktur logam.
To increase the strength of metal structures.
c
Mengurangi bobot total kapal.
To reduce the total weight of the ship.
d
Memperbaiki kekerasan permukaan logam.
To improve the surface hardness of the metal.
Grade
Ungraded
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Question
62
Bagaimana cara anoda seng berfungsi dalam sistem proteksi katodik?
How does a zinc anode function in a cathodic protection system?
Options
a
Dengan menerima elektron dari struktur logam yang diproteksi.
By receiving electrons from the protected metal structure.
b
Dengan melepaskan elektron ke lingkungan sekitar.
By releasing electrons into the surrounding environment.
c
Dengan menghasilkan medan listrik positif.
By generating a positive electric field.
d
Dengan mengurangi panas yang dihasilkan oleh logam.
By reducing the heat generated by the metal.
Grade
Ungraded
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Question
63
Mengapa pemasangan anoda seng harus dilakukan di bawah garis air kapal?
Why must zinc anodes be installed below the ship’s waterline?
Options
a
Agar anoda tidak terpapar lingkungan udara.
So that the anode is not exposed to the air environment.
b
Untuk mengurangi biaya operasional.
To reduce operating costs.
c
Agar mudah dijangkau untuk perawatan.
So that it is easy to reach for maintenance.
d
Untuk mengurangi risiko kecelakaan kerja.
To reduce the risk of work accidents.
Grade
Ungraded
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Question
64
Apa keunggulan utama dari sistem proteksi katodik menggunakan anoda seng?
What is the main advantage of a cathodic protection system using zinc anodes?
Options
a
Pemasangan relatif mudah dan murah.
Installation is relatively simple and inexpensive.
b
Distribusi arus yang tidak merata.
Current distribution is uneven.
c
Cocok untuk struktur besar dengan arus proteksi besar.
It is suitable for large structures requiring high protective current.
d
Tidak memerlukan biaya operasional.
It does not require operating costs.
Grade
Ungraded
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Question
65
Anoda seng sering dipasang pada bagian kapal yang mana?
On which part of the ship are zinc anodes often installed?
Options
a
Buritan sampai haluan.
From stern to bow.
b
Dek atas kapal.
On the upper deck.
c
Anak-anak kapal.
On the crew members.
d
Kabin kapal.
In the ship’s cabins.
Grade
Ungraded
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Question
66
Apa kekurangan utama dari penggunaan anoda seng dalam proteksi katodik?
What is the main disadvantage of using zinc anodes in cathodic protection?
Options
a
Tidak efektif bila resistivitas elektrolit tinggi.
They are not effective when electrolyte resistivity is high.
b
Resiko overprotection yang tinggi.
There is a high risk of overprotection.
c
Cocok untuk daerah berstruktur padat.
They are suitable for densely structured areas.
d
Memerlukan sumber energi listrik dari luar.
They require an external power source.
Grade
Ungraded
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Question
67
Mengapa penggunaan anoda seng umumnya direkomendasikan untuk kapal fiberglass?
Why is the use of zinc anodes generally recommended for fiberglass boats?
Options
a
Karena lebih tahan terhadap air laut.
Because they are more resistant to seawater.
b
Karena lebih kuat dari anoda lainnya.
Because they are stronger than other anodes.
c
Karena lebih hemat biaya.
Because they are more economical.
d
Karena lebih efisien dalam proses produksi.
Because they are more efficient in the production process.
Grade
Ungraded
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Question
68
Apa yang dimaksud dengan proses reduksi pada katoda dalam proteksi katodik?
What is meant by the reduction process at the cathode in cathodic protection?
Options
a
Proses penerimaan elektron oleh katoda.
The process of electron acceptance by the cathode.
b
Proses pelepasan elektron dari katoda.
The process of electron release from the cathode.
c
Proses pengurangan ukuran partikel logam.
The process of reducing the size of metal particles.
d
Proses pembersihan permukaan logam.
The process of cleaning the metal surface.
Grade
Ungraded
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Question
69
Mengapa pemasangan anoda seng dilakukan dengan pengelasan kecil?
Why are zinc anodes installed using small welds?
Options
a
Agar lebih mudah dilepas saat perlu diganti.
So that they are easier to remove when replacement is required.
b
Agar tidak mempengaruhi kekuatan struktur kapal.
So that they do not affect the strength of the ship’s structure.
c
Agar tidak membutuhkan biaya operasional.
So that they do not require operating costs.
d
Agar lebih efisien dalam konsumsi energi.
So that they are more energy-efficient.
Grade
Ungraded
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Question
70
Apa yang dimaksud dengan "overprotection" dalam konteks proteksi katodik?
What is meant by "overprotection" in the context of cathodic protection?
Options
a
Perlindungan berlebihan yang dapat merusak logam.
Excessive protection that can damage the metal.
b
Perlindungan dengan biaya operasional rendah.
Protection with low operating cost.
c
Perlindungan dengan distribusi arus merata.
Protection with even current distribution.
d
Perlindungan dengan efektivitas tinggi terhadap korosi.
Protection with high effectiveness against corrosion.
Grade
Ungraded
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