Question
41
Membatasi tekanan minyak lumas agar tidak berlebihan
To limit lubricating oil pressure so it does not become excessive
Options
a
Menaikkan temperatur minyak lumas saat start
To raise lubricating oil temperature during start
b
Mengalirkan bahan bakar ke service tank
To direct fuel to the service tank
c
Membuka katup masuk udara bilas
To open the scavenging air inlet valve
Grade
Ungraded
Last Update
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Question
42
Apa yang dimaksud dengan sistem pelumasan tekan?
What is meant by a pressure lubrication system?
Options
a
Sistem pelumasan yang menyalurkan oli dengan tekanan dari pompa ke titik pelumasan
A lubrication system that delivers oil under pressure from a pump to lubrication points
b
Sistem pelumasan yang hanya mengandalkan cipratan oli dari piston
A lubrication system that relies only on oil splash from the piston
c
Sistem pelumasan yang memakai udara tekan untuk mendorong oli ke silinder
A lubrication system that uses compressed air to push oil into the cylinder
d
Sistem pelumasan yang mencampur oli dengan bahan bakar
A lubrication system that mixes oil with fuel
Grade
Ungraded
Last Update
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Question
43
Apa akibat penurunan viskositas minyak pelumas?
What is the effect of a decrease in lubricating oil viscosity?
Options
a
Film pelumas menjadi lebih tipis sehingga perlindungan terhadap keausan menurun
The oil film becomes thinner so protection against wear decreases
b
Minyak lumas menjadi lebih kental dan tidak bisa dipompa
The lubricating oil becomes thicker and cannot be pumped
c
Tekanan kompresi silinder naik secara otomatis
Cylinder compression pressure rises automatically
d
Pendinginan piston menjadi berlebihan
Piston cooling becomes excessive
Grade
Ungraded
Last Update
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Question
44
Apa yang dimaksud dengan pelumasan percik?
What is meant by splash lubrication?
Options
a
Pelumasan yang terjadi karena oli terciprat oleh gerakan komponen berputar
Lubrication that occurs because oil is splashed by the movement of rotating parts
b
Pelumasan yang selalu menggunakan pompa tekanan tinggi
Lubrication that always uses a high-pressure pump
c
Pelumasan dengan campuran udara dan oli di manifold
Lubrication with a mixture of air and oil in the manifold
d
Pelumasan yang hanya dipakai pada turbocharger
Lubrication used only on turbochargers
Grade
Ungraded
Last Update
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Question
45
Jika minyak pelumas tercemar berat, tindakan yang tepat adalah?
If lubricating oil is heavily contaminated, what is the correct action?
Options
a
Ganti minyak pelumas dan filter, lalu cari sumber pencemaran
Replace the lubricating oil and filter, then find the source of contamination
b
Tambahkan bahan bakar agar oli lebih encer
Add fuel so the oil becomes thinner
c
Biarkan sampai tekanan oli turun
Leave it until oil pressure drops
d
Tutup semua ventilasi crankcase
Close all crankcase ventilation
Grade
Ungraded
Last Update
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By -
Question
46
Apa yang dimaksud dengan minyak pelumas berbasis mineral?
What is meant by mineral-based lubricating oil?
Options
a
Minyak pelumas yang berasal dari hasil pengolahan minyak bumi
Lubricating oil derived from processed petroleum
b
Minyak pelumas yang dibuat dari air laut murni
Lubricating oil made from pure seawater
c
Minyak pelumas yang berasal dari campuran bensin dan solar
Lubricating oil made from a mixture of gasoline and diesel
d
Minyak pelumas yang dibuat hanya dari air dan aditif
Lubricating oil made only from water and additives
Grade
Ungraded
Last Update
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By -
Question
47
Apa yang dimaksud dengan minyak pelumas sintetis?
What is meant by synthetic lubricating oil?
Options
a
Minyak pelumas yang diproduksi melalui proses kimia dengan karakteristik tertentu
Lubricating oil produced through chemical processes with specific characteristics
b
Minyak pelumas yang berasal langsung dari sludge purifier
Lubricating oil taken directly from purifier sludge
c
Minyak pelumas yang dibuat dari air tawar dan bahan bakar
Lubricating oil made from fresh water and fuel
d
Minyak pelumas yang selalu lebih murah daripada oli mineral
Lubricating oil that is always cheaper than mineral oil
Grade
Ungraded
Last Update
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Question
48
Apa fungsi utama cylinder head pada mesin diesel laut?
What is the main function of the cylinder head in a marine diesel engine?
Options
a
Menutup bagian atas silinder dan membentuk ruang bakar
To close the top of the cylinder and form the combustion chamber
b
Menampung minyak lumas dari crankcase
To store lubricating oil from the crankcase
c
Menggerakkan pompa pendingin secara langsung
To drive the cooling pump directly
d
Menyaring udara masuk ke turbocharger
To filter intake air to the turbocharger
Grade
Ungraded
Last Update
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Question
49
Komponen yang umumnya terdapat pada cylinder head adalah?
Which components are generally found on the cylinder head?
Options
a
Katup masuk, katup buang, dan dudukan injektor
Inlet valve, exhaust valve, and injector seating
b
Flywheel, poros engkol, dan bantalan utama
Flywheel, crankshaft, and main bearing
c
Pompa bilga, strainer, dan ejector
Bilge pump, strainer, and ejector
d
Purifier, heater, dan service tank
Purifier, heater, and service tank
Grade
Ungraded
Last Update
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Question
50
Apa akibat kebocoran pada head gasket?
What is the effect of a leaking head gasket?
Options
a
Kompresi bocor dan performa mesin menurun
Compression leaks and engine performance decreases
b
Putaran mesin menjadi lebih stabil
Engine speed becomes more stable
c
Tekanan bahan bakar meningkat otomatis
Fuel pressure rises automatically
d
Suhu air laut di cooler langsung turun
Seawater temperature in the cooler drops immediately
Grade
Ungraded
Last Update
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