Question
91
Mengapa indicator cock dibuka saat turning over sebelum start?
Why is the indicator cock opened during turning over before starting?
Options
a
Untuk memastikan tidak ada air atau minyak terkumpul di dalam silinder
To ensure that no water or oil has accumulated inside the cylinder
b
Untuk menambah kompresi saat start
To increase compression during starting
c
Untuk menaikkan tekanan bahan bakar di pipa injeksi
To raise fuel pressure in the injection pipe
d
Untuk memanaskan udara bilas sebelum pembakaran
To heat scavenge air before combustion
Grade
Easy
Last Update
06 Aug 2026 11:40
By Gabriel
Question
92
Apa bahaya jika terdapat air di dalam silinder saat start?
What is the danger if there is water inside the cylinder during starting?
Options
a
Dapat terjadi hydraulic lock yang merusak komponen mesin
Hydraulic lock may occur and damage engine components
b
Dapat meningkatkan efisiensi pembakaran secara tiba-tiba
It can suddenly increase combustion efficiency
c
Dapat menurunkan temperatur gas buang tanpa risiko
It can lower exhaust gas temperature without risk
d
Dapat memperpanjang umur katup buang
It can extend the life of the exhaust valve
Grade
Easy
Last Update
06 Aug 2026 11:41
By Gabriel
Question
93
Apa tujuan blow through sebelum mesin induk di-start setelah lama berhenti?
What is the purpose of blow through before starting the main engine after a long shutdown?
Options
a
Mengeluarkan sisa air, minyak, atau gas dari silinder dan manifold
To expel any remaining water, oil, or gas from the cylinder and manifold
b
Menaikkan viskositas bahan bakar di service tank
To increase fuel viscosity in the service tank
c
Mengganti minyak lumas dengan air tawar
To replace lubricating oil with fresh water
d
Mengeringkan sludge di purifier
To dry sludge in the purifier
Grade
Easy
Last Update
06 Aug 2026 11:41
By Gabriel
Question
94
Pemeriksaan apa yang paling penting sebelum start mesin induk setelah pekerjaan perawatan?
What is the most important check before starting the main engine after maintenance work?
Options
a
Memastikan sistem pelumasan, pendinginan, bahan bakar, dan start siap serta aman
To ensure that the lubrication, cooling, fuel, and starting systems are ready and safe
b
Memastikan cat ruang mesin sudah kering
To ensure that the engine room paint is dry
c
Memastikan semua lampu akomodasi menyala
To ensure that all accommodation lights are on
d
Memastikan tekanan air minum di pantry cukup
To ensure that drinking water pressure in the pantry is sufficient
Grade
Easy
Last Update
06 Aug 2026 11:42
By Gabriel
Question
95
Apa fungsi emergency stop pada mesin bantu atau peralatan berputar?
What is the function of the emergency stop on an auxiliary engine or rotating equipment?
Options
a
Menghentikan mesin dengan cepat saat terjadi kondisi tidak aman
To stop the machine quickly when an unsafe condition occurs
b
Menurunkan temperatur bahan bakar secara perlahan
To reduce fuel temperature gradually
c
Menambah putaran governor saat beban naik
To increase governor speed when load rises
d
Mengalihkan pendinginan dari air tawar ke udara
To switch cooling from fresh water to air
Grade
Easy
Last Update
06 Aug 2026 11:42
By Gabriel
Question
96
Apa fungsi oily water separator di kamar mesin?
What is the function of the oily water separator in the engine room?
Options
a
Memisahkan minyak dari air bilga sebelum air dibuang ke laut
To separate oil from bilge water before the water is discharged overboard
b
Mencampur sludge dengan air laut
To mix sludge with seawater
c
Mendinginkan air bilga sebelum masuk tangki
To cool bilge water before it enters the tank
d
Mengubah minyak lumas menjadi bahan bakar
To convert lubricating oil into fuel
Grade
Easy
Last Update
06 Aug 2026 11:42
By Gabriel
Question
97
Berapa batas kandungan minyak dalam air buangan bilga yang diizinkan untuk dibuang ke laut sesuai MARPOL Annex I?
What is the permissible oil content limit in bilge discharge water allowed to be discharged overboard according to MARPOL Annex I?
Options
a
15 ppm
15 ppm
b
5 ppm
5 ppm
c
30 ppm
30 ppm
d
100 ppm
100 ppm
Grade
Easy
Last Update
06 Aug 2026 11:43
By Gabriel
Question
98
Apa fungsi fresh water generator di kapal?
What is the function of the fresh water generator on board?
Options
a
Menghasilkan air tawar dari air laut untuk kebutuhan kapal
To produce fresh water from seawater for shipboard use
b
Menaikkan tekanan udara start
To increase starting air pressure
c
Memurnikan minyak lumas dari sludge
To purify lubricating oil from sludge
d
Menyimpan cadangan bahan bakar harian
To store daily fuel reserve
Grade
Easy
Last Update
06 Aug 2026 11:43
By Gabriel
Question
99
Apa fungsi intercooler pada kompresor udara bertingkat?
What is the function of the intercooler in a multistage air compressor?
Options
a
Menurunkan temperatur udara antar tahap kompresi agar kerja kompresor lebih efisien
To reduce the temperature of the air between compression stages so that the compressor works more efficiently
b
Menaikkan temperatur udara agar tekanan cepat naik
To increase air temperature so that pressure rises faster
c
Memisahkan bahan bakar dari minyak lumas
To separate fuel from lubricating oil
d
Menambah kadar uap air di udara tekan
To increase the moisture content in compressed air
Grade
Easy
Last Update
06 Aug 2026 11:43
By Gabriel
Question
100
Mengapa aftercooler dipasang setelah tahap akhir kompresi udara?
Why is an aftercooler installed after the final stage of air compression?
Options
a
Untuk menurunkan temperatur udara tekan dan membantu pengembunan uap air sebelum masuk tabung udara
To reduce compressed air temperature and help condense water vapor before it enters the air receiver
b
Untuk menaikkan viskositas udara agar mudah disimpan
To increase air viscosity so that it is easier to store
c
Untuk mencampur udara dengan bahan bakar sebelum start
To mix air with fuel before starting
d
Untuk menggantikan fungsi safety valve pada tabung udara start
To replace the function of the safety valve on the starting air receiver
Grade
Medium
Last Update
10 Aug 2026 14:03
By Gabriel