Question
61
Apa fungsi utama cylinder block?
What is the main function of the cylinder block?
Options
a
Menjadi struktur utama mesin tempat silinder dan komponen utama terpasang
To be the main engine structure where the cylinders and major components are mounted
b
Mengabutkan bahan bakar ke ruang bakar
To atomize fuel into the combustion chamber
c
Mendinginkan udara bilas sebelum masuk silinder
To cool scavenging air before it enters the cylinder
d
Menggerakkan alternator secara langsung
To drive the alternator directly
Grade
Ungraded
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Question
62
Bahan yang umum digunakan untuk cylinder block adalah?
What material is commonly used for the cylinder block?
Options
a
Besi cor atau baja cor
Cast iron or cast steel
b
Plastik termal
Thermal plastic
c
Kayu laminasi
Laminated wood
d
Kuningan tipis
Thin brass
Grade
Ungraded
Last Update
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Question
63
Apa fungsi cooling jacket pada cylinder block?
What is the function of the cooling jacket in the cylinder block?
Options
a
Menyalurkan cairan pendingin untuk menyerap panas dari dinding silinder
To carry coolant that absorbs heat from the cylinder walls
b
Menampung bahan bakar sebelum dipompa
To store fuel before pumping
c
Menyalurkan udara start ke ruang bakar
To deliver starting air to the combustion chamber
d
Mengumpulkan gas buang dari manifold
To collect exhaust gas from the manifold
Grade
Ungraded
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Question
64
Apa fungsi ruang crankcase pada mesin?
What is the function of the crankcase in the engine?
Options
a
Menjadi rumah poros engkol dan menampung minyak lumas
To house the crankshaft and hold lubricating oil
b
Menjadi ruang pembakaran utama
To serve as the main combustion chamber
c
Menjadi tempat penyimpanan bahan bakar harian
To serve as the daily fuel storage space
d
Menjadi saluran air laut pendingin
To serve as the seawater cooling passage
Grade
Ungraded
Last Update
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Question
65
Apa fungsi utama cylinder liner?
What is the main function of the cylinder liner?
Options
a
Melindungi dinding silinder dan menyediakan permukaan gesek yang dapat diganti
To protect the cylinder wall and provide a replaceable wearing surface
b
Menaikkan tekanan udara di turbocharger
To increase air pressure in the turbocharger
c
Menyaring minyak lumas sebelum masuk bantalan
To filter lubricating oil before it enters the bearings
d
Mengatur putaran poros baling-baling
To regulate propeller shaft speed
Grade
Ungraded
Last Update
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Question
66
Tanda yang mungkin muncul jika cylinder liner retak adalah?
What sign may appear if the cylinder liner cracks?
Options
a
Kehilangan kompresi atau kebocoran pendingin ke dalam silinder
Loss of compression or coolant leakage into the cylinder
b
Konsumsi bahan bakar turun drastis tanpa sebab lain
Fuel consumption drops drastically without another cause
c
Temperatur gas buang semua silinder menjadi sama persis
Exhaust gas temperature of all cylinders becomes exactly the same
d
Tekanan udara start meningkat terus saat mesin berhenti
Starting air pressure keeps increasing while the engine is stopped
Grade
Ungraded
Last Update
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Question
67
Keuntungan penggunaan cylinder liner yang dapat diganti adalah?
What is the advantage of using a replaceable cylinder liner?
Options
a
Perawatan dan overhaul lebih mudah tanpa mengganti seluruh blok
Maintenance and overhaul are easier without replacing the whole block
b
Putaran mesin menjadi selalu lebih tinggi
Engine speed always becomes higher
c
Tidak memerlukan sistem pelumasan
No lubrication system is required
d
Kebutuhan pendinginan menjadi hilang
Cooling requirements disappear
Grade
Ungraded
Last Update
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Question
68
Bagaimana cara umum memeriksa keausan cylinder liner?
How is cylinder liner wear commonly checked?
Options
a
Mengukur diameter dan ovalitas liner pada beberapa posisi
By measuring liner diameter and ovality at several positions
b
Melihat warna cat blok mesin dari luar
By looking at the paint color of the engine block from outside
c
Mengukur tinggi cerobong gas buang
By measuring the height of the exhaust funnel
d
Menimbang service tank sebelum jaga
By weighing the service tank before watchkeeping
Grade
Ungraded
Last Update
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Question
69
Apa fungsi utama piston?
What is the main function of the piston?
Options
a
Menerima tekanan pembakaran dan meneruskannya ke connecting rod
To receive combustion pressure and transmit it to the connecting rod
b
Menyemprotkan bahan bakar ke ruang bakar
To spray fuel into the combustion chamber
c
Membuka dan menutup katup buang
To open and close the exhaust valve
d
Mengatur tekanan minyak lumas di sump tank
To regulate lubricating oil pressure in the sump tank
Grade
Ungraded
Last Update
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Question
70
Apa fungsi compression ring pada piston?
What is the function of the compression ring on the piston?
Options
a
Menahan kebocoran gas pembakaran dan menjaga kompresi
To prevent combustion gas leakage and maintain compression
b
Menyaring bahan bakar sebelum injeksi
To filter fuel before injection
c
Menggerakkan camshaft dari crankshaft
To drive the camshaft from the crankshaft
d
Membuang sludge ke tangki limbah
To discharge sludge into the waste tank
Grade
Ungraded
Last Update
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