Question
41
Apa fungsi utama Fresh Water Jacket Cooling Pump?
What is the main function of the Fresh Water Jacket Cooling Pump?
Options
a
Mensirkulasikan air tawar pendingin melalui jacket silinder
To circulate fresh cooling water through the cylinder jacket
b
Mensirkulasikan bahan bakar dari settling tank ke service tank
To circulate fuel from the settling tank to the service tank
c
Mensirkulasikan udara bilas ke ruang bakar
To circulate scavenge air to the combustion space
d
Mensirkulasikan air laut ke tabung udara start
To circulate seawater to the starting air receiver
Grade
Easy
Last Update
04 Aug 2026 13:01
By Gabriel
Question
42
Apa fungsi Jacket Water Cooler?
What is the function of the Jacket Water Cooler?
Options
a
Mendinginkan air tawar pendingin jacket dengan media air laut
To cool jacket fresh water by means of seawater
b
Mendinginkan bahan bakar berat sebelum purifier
To cool heavy fuel oil before the purifier
c
Memanaskan udara bilas sebelum masuk silinder
To heat scavenge air before it enters the cylinder
d
Mendinginkan gas buang di exhaust manifold
To cool exhaust gas in the exhaust manifold
Grade
Easy
Last Update
04 Aug 2026 13:01
By Gabriel
Question
43
Apa peran air laut dalam sistem pendingin tertutup mesin induk?
What is the role of seawater in the closed cooling system of the main engine?
Options
a
Sebagai media sekunder untuk menyerap panas di cooler
As a secondary medium to absorb heat in the coolers
b
Sebagai media utama di dalam jacket silinder
As the primary medium inside the cylinder jacket
c
Sebagai pengganti minyak lumas di bantalan
As a replacement for lubricating oil in the bearings
d
Sebagai fluida kerja di dalam silinder
As the working fluid inside the cylinder
Grade
Easy
Last Update
04 Aug 2026 13:01
By Gabriel
Question
44
Apa fungsi Jacket Water Header Tank?
What is the function of the Jacket Water Header Tank?
Options
a
Menjadi cadangan air pendingin, tempat ekspansi, dan titik penambahan air
To provide cooling water reserve, expansion space, and a point for water replenishment
b
Menjadi tempat penampungan bahan bakar harian
To serve as a daily fuel storage tank
c
Menjadi tempat pemisahan minyak dan air
To separate oil and water
d
Menjadi tempat penyimpanan udara start
To store starting air
Grade
Easy
Last Update
04 Aug 2026 13:02
By Gabriel
Question
45
Apa fungsi steam heating coil pada sistem pendingin air tawar?
What is the function of the steam heating coil in the fresh water cooling system?
Options
a
Memanaskan air pendingin saat pemanasan awal mesin
To heat the cooling water during initial engine warming
b
Mendinginkan air pendingin saat mesin penuh beban
To cool the cooling water when the engine is at full load
c
Memanaskan minyak lumas di purifier
To heat lubricating oil in the purifier
d
Menjaga tekanan udara start tetap stabil
To maintain stable starting air pressure
Grade
Easy
Last Update
04 Aug 2026 13:02
By Gabriel
Question
46
Apa fungsi Piston Water Cooler?
What is the function of the Piston Water Cooler?
Options
a
Mendinginkan air tawar yang keluar dari pendinginan piston
To cool the fresh water returning from piston cooling
b
Mendinginkan udara start sebelum masuk manifold
To cool starting air before it enters the manifold
c
Mendinginkan bahan bakar sebelum masuk injector
To cool fuel before it enters the injector
d
Mendinginkan minyak lumas di sump tank
To cool lubricating oil in the sump tank
Grade
Easy
Last Update
04 Aug 2026 13:02
By Gabriel
Question
47
Mengapa air tawar digunakan sebagai media pendingin dalam sistem tertutup?
Why is fresh water used as the cooling medium in a closed system?
Options
a
Karena lebih kecil menimbulkan korosi dan pembentukan kerak dibanding air laut
Because it causes less corrosion and scale formation than seawater
b
Karena mempunyai kadar garam lebih tinggi daripada air laut
Because it has a higher salt content than seawater
c
Karena lebih murah dipompa daripada udara
Because it is cheaper to pump than air
d
Karena dapat langsung dibuang ke laut tanpa pengolahan
Because it can be discharged directly overboard without treatment
Grade
Easy
Last Update
04 Aug 2026 13:03
By Gabriel
Question
48
Apa yang harus dilakukan terhadap steam heating coil setelah mesin mencapai temperatur kerja normal?
What should be done with the steam heating coil after the engine reaches normal operating temperature?
Options
a
Dimatikan atau diisolasi dari aliran steam
It should be shut off or isolated from the steam supply
b
Dibiarkan selalu terbuka penuh
It should be left fully open at all times
c
Dihubungkan ke sistem udara start
It should be connected to the starting air system
d
Dibuang dari rangkaian pendingin
It should be removed from the cooling circuit
Grade
Easy
Last Update
04 Aug 2026 13:03
By Gabriel
Question
49
Apa tugas Fresh Water Piston Cooling Pump?
What is the duty of the Fresh Water Piston Cooling Pump?
Options
a
Mensuplai air tawar pendingin ke piston
To supply fresh cooling water to the piston
b
Mensuplai air laut ke jacket silinder
To supply seawater to the cylinder jacket
c
Mensuplai minyak lumas ke turbocharger
To supply lubricating oil to the turbocharger
d
Mensuplai udara bertekanan ke manifold start
To supply compressed air to the starting manifold
Grade
Easy
Last Update
04 Aug 2026 13:03
By Gabriel
Question
50
Apa tujuan utama sistem pendingin air tawar pada mesin induk?
What is the main purpose of the fresh water cooling system on the main engine?
Options
a
Menjaga temperatur kerja mesin tetap dalam batas aman dan efisien
To keep the engine operating temperature within safe and efficient limits
b
Menurunkan tekanan kompresi di dalam silinder
To reduce compression pressure inside the cylinder
c
Menaikkan viskositas bahan bakar berat
To increase the viscosity of heavy fuel oil
d
Menambah putaran poros baling-baling
To increase propeller shaft speed
Grade
Easy
Last Update
04 Aug 2026 13:03
By Gabriel