Question
1
Apa yang terjadi selama proses ekspansi adiabatik?
What happens during the adiabatic expansion process?
Options
a
Tekanan menurun dan volume bertambah sehingga piston terdorong
Pressure decreases and volume increases, pushing the piston
b
Tekanan meningkat dan volume menurun secara bersamaan
Pressure increases and volume decreases simultaneously
c
Temperatur tetap dan volume tidak berubah
Temperature remains constant and volume does not change
d
Gas buang langsung keluar melalui katup masuk
Exhaust gas immediately exits through the inlet valve
Grade
Ungraded
Last Update
-
By -
Question
2
Bahan bakar yang umum digunakan pada mesin diesel laut adalah?
What fuel is commonly used in marine diesel engines?
Options
a
Minyak diesel atau marine diesel oil
Diesel oil or marine diesel oil
b
Bensin beroktan tinggi
High-octane gasoline
c
Etanol murni
Pure ethanol
d
Minyak tanah penerbangan
Aviation kerosene
Grade
Ungraded
Last Update
-
By -
Question
3
Mengapa mesin diesel memiliki efisiensi termal yang relatif tinggi?
Why do diesel engines have relatively high thermal efficiency?
Options
a
Karena bekerja dengan rasio kompresi yang tinggi
Because they operate with a high compression ratio
b
Karena menggunakan busi pada setiap siklus kerja
Because they use spark plugs in every working cycle
c
Karena campuran bahan bakar dan udara selalu homogen
Because the fuel-air mixture is always homogeneous
d
Karena pembakaran berlangsung pada temperatur sangat rendah
Because combustion takes place at a very low temperature
Grade
Ungraded
Last Update
-
By -
Question
4
Keuntungan utama mesin diesel untuk kapal adalah?
What is the main advantage of a diesel engine for ships?
Options
a
Torsi besar dan efisiensi bahan bakar yang baik
High torque and good fuel efficiency
b
Putaran sangat tinggi dengan konstruksi ringan
Very high speed with lightweight construction
c
Tidak memerlukan sistem pelumasan
No need for a lubrication system
d
Dapat bekerja tanpa sistem pendingin
Can operate without a cooling system
Grade
Ungraded
Last Update
-
By -
Question
5
Bagaimana gas buang dikeluarkan dari silinder pada mesin diesel?
How are exhaust gases discharged from the cylinder in a diesel engine?
Options
a
Melalui katup buang setelah langkah usaha atau ekspansi
Through the exhaust valve after the power or expansion stroke
b
Melalui injektor saat akhir kompresi
Through the injector at the end of compression
c
Melalui katup masuk saat langkah hisap
Through the inlet valve during the suction stroke
d
Melalui saluran minyak lumas di crankcase
Through the lubricating oil passage in the crankcase
Grade
Ungraded
Last Update
-
By -
Question
6
Apa fungsi utama tangki harian bahan bakar pada kapal?
What is the main function of the daily fuel tank on board?
Options
a
Menyediakan suplai bahan bakar siap pakai ke mesin secara kontinu
To provide a continuous ready-to-use fuel supply to the engine
b
Menampung air got dari ruang mesin
To store bilge water from the engine room
c
Mencampur minyak lumas dengan bahan bakar
To mix lubricating oil with fuel
d
Mendinginkan bahan bakar sebelum masuk settling tank
To cool the fuel before it enters the settling tank
Grade
Ungraded
Last Update
-
By -
Question
7
Komponen mana yang menyemprotkan bahan bakar ke ruang bakar?
Which component sprays fuel into the combustion chamber?
Options
a
Injektor
Injector
b
Alternator
Alternator
c
Thermostat
Thermostat
d
Flywheel
Flywheel
Grade
Ungraded
Last Update
-
By -
Question
8
Apa yang dimaksud dengan filtrasi bahan bakar?
What is meant by fuel filtration?
Options
a
Proses penyaringan kotoran dan partikel dari bahan bakar sebelum dipakai mesin
The process of removing dirt and particles from the fuel before it is used by the engine
b
Proses penguapan bahan bakar di dalam tangki
The process of evaporating fuel inside the tank
c
Proses pendinginan bahan bakar dengan air laut
The process of cooling fuel with seawater
d
Proses pencampuran bahan bakar dengan udara bilas
The process of mixing fuel with scavenging air
Grade
Ungraded
Last Update
-
By -
Question
9
Dalam konteks tangki bahan bakar, kondensasi dapat menyebabkan?
In the context of a fuel tank, condensation can cause what?
Options
a
Terbentuknya air di dalam tangki yang dapat mencemari bahan bakar
The formation of water inside the tank that can contaminate the fuel
b
Meningkatnya nilai kalor bahan bakar
An increase in the fuel’s calorific value
c
Naiknya angka setana bahan bakar
An increase in the cetane number of the fuel
d
Berkurangnya kandungan sulfur secara alami
A natural reduction in sulfur content
Grade
Ungraded
Last Update
-
By -
Question
10
Apa fungsi utama settling tank pada sistem bahan bakar?
What is the main function of the settling tank in the fuel system?
Options
a
Mengendapkan air dan kotoran sebelum bahan bakar diproses lebih lanjut
To settle out water and dirt before the fuel is processed further
b
Menaikkan tekanan bahan bakar ke injektor
To increase fuel pressure to the injector
c
Mengubah bahan bakar cair menjadi gas
To convert liquid fuel into gas
d
Menyimpan air pendingin untuk purifier
To store cooling water for the purifier
Grade
Ungraded
Last Update
-
By -