Question
2021
Apa fungsi thermostat pada sistem pendingin air tawar mesin?
What is the function of the thermostat in the engine fresh water cooling system?
Options
a
Mengatur aliran agar temperatur kerja mesin tetap pada nilai yang ditentukan
To regulate flow so that the engine operating temperature remains at the set value
b
Menambah tekanan pompa pendingin
To increase cooling pump pressure
c
Menghilangkan kebutuhan expansion tank
To eliminate the need for an expansion tank
d
Memisahkan udara dari jacket water
To separate air from the jacket water
Grade
Ungraded
Last Update
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Question
2022
Apa fungsi expansion tank pada sistem pendingin tertutup?
What is the function of the expansion tank in a closed cooling system?
Options
a
Menampung pemuaian air tawar dan menjaga suplai ke sistem
To accommodate fresh water expansion and maintain supply to the system
b
Mendinginkan air laut sebelum masuk cooler
To cool seawater before it enters the cooler
c
Meningkatkan salinitas air pendingin
To increase cooling water salinity
d
Mengganti fungsi jacket water pump
To replace the function of the jacket water pump
Grade
Ungraded
Last Update
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Question
2023
Mengapa lube oil harus dipanaskan sebelum pemurnian di purifier?
Why must lube oil be heated before purification in a purifier?
Options
a
Agar viskositas turun dan proses pemisahan lebih efektif
So that viscosity is reduced and separation becomes more effective
b
Agar kandungan air bertambah dan mudah dipisahkan
So that water content increases and is easier to separate
c
Agar densitas minyak naik mendekati air
So that the oil density rises closer to that of water
d
Agar motor purifier berputar lebih lambat
So that the purifier motor rotates more slowly
Grade
Ungraded
Last Update
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Question
2024
Apa akibat umum bila filter bahan bakar tersumbat?
What is the common effect if the fuel filter is clogged?
Options
a
Tekanan suplai turun dan mesin dapat kehilangan tenaga
Supply pressure drops and the engine may lose power
b
Temperatur gas buang semua silinder langsung turun ke nol
The exhaust gas temperature of all cylinders immediately drops to zero
c
Putaran turbocharger meningkat tanpa batas
Turbocharger speed increases without limit
d
Konsumsi pelumas langsung berkurang drastis
Lubricating oil consumption immediately decreases drastically
Grade
Ungraded
Last Update
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Question
2025
Apa fungsi bilge pump di kamar mesin?
What is the function of the bilge pump in the engine room?
Options
a
Menghisap dan memindahkan air bilga ke sistem pembuangan yang sesuai
To suction and transfer bilge water to the appropriate discharge system
b
Menaikkan tekanan bahan bakar ke injector
To increase fuel pressure to the injector
c
Mensirkulasikan pelumas ke crosshead
To circulate lubricating oil to the crosshead
d
Mengisi air ke boiler secara otomatis
To feed water into the boiler automatically
Grade
Ungraded
Last Update
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Question
2026
Apa tujuan pengujian alarm level tinggi pada bilge well?
What is the purpose of testing the high-level alarm in the bilge well?
Options
a
Memastikan alarm bekerja untuk memberi peringatan dini adanya kenaikan bilga
To ensure the alarm works and gives early warning of rising bilge water
b
Mengkalibrasi pressure gauge pompa bilga
To calibrate the bilge pump pressure gauge
c
Menurunkan konsumsi listrik separator
To reduce separator power consumption
d
Menguji kebocoran pada shell and tube cooler
To test leakage in the shell and tube cooler
Grade
Ungraded
Last Update
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Question
2027
Apa fungsi governor pada mesin diesel kapal?
What is the function of the governor on a marine diesel engine?
Options
a
Mengatur suplai bahan bakar agar putaran mesin tetap sesuai beban
To regulate fuel supply so that engine speed remains in accordance with the load
b
Menaikkan tekanan kompresi di dalam silinder
To increase compression pressure inside the cylinder
c
Mendinginkan injector pada saat start
To cool the injector during starting
d
Mengatur arah putaran poros propeler
To control the direction of propeller shaft rotation
Grade
Ungraded
Last Update
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Question
2028
Apa tujuan blow-through pada indicator cock sebelum start mesin diesel?
What is the purpose of blow-through at the indicator cock before starting a diesel engine?
Options
a
Mengeluarkan air, minyak, atau benda asing dari silinder
To expel water, oil, or foreign matter from the cylinder
b
Menaikkan temperatur jacket water dengan cepat
To raise jacket water temperature quickly
c
Memeriksa warna gas buang saat beban penuh
To check exhaust gas colour at full load
d
Mengurangi tekanan starting air receiver
To reduce starting air receiver pressure
Grade
Ungraded
Last Update
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Question
2029
Mengapa level air boiler harus dijaga dalam batas aman?
Why must the boiler water level be maintained within safe limits?
Options
a
Agar permukaan pemanas tetap tertutup air dan mencegah kerusakan boiler
So that the heating surfaces remain covered with water and boiler damage is prevented
b
Agar tekanan uap turun sampai nol
So that steam pressure drops to zero
c
Agar safety valve tidak pernah membuka
So that the safety valve never opens
d
Agar konsumsi bahan bakar boiler selalu minimum
So that boiler fuel consumption is always minimum
Grade
Ungraded
Last Update
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Question
2030
Apa fungsi feed check valve pada boiler?
What is the function of the feed check valve on a boiler?
Options
a
Mencegah aliran balik dari boiler ke feed line
To prevent backflow from the boiler to the feed line
b
Mengatur tekanan udara pembakaran
To regulate combustion air pressure
c
Menurunkan temperatur air umpan
To reduce feed water temperature
d
Memisahkan lumpur dari air boiler
To separate sludge from boiler water
Grade
Ungraded
Last Update
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