Question
61
Apa fungsi sump tank atau crankcase oil sump?
What is the function of the sump tank or crankcase oil sump?
Options
a
Menampung minyak lumas yang kembali dari sistem sebelum disirkulasikan lagi
To collect lubricating oil returning from the system before it is recirculated
b
Menampung air pendingin dari jacket silinder
To collect cooling water from the cylinder jacket
c
Menampung bahan bakar siap pakai untuk mesin bantu
To store ready-to-use fuel for the auxiliary engine
d
Menampung udara buang dari turbocharger
To collect exhaust air from the turbocharger
Grade
Easy
Last Update
05 Aug 2026 11:17
By Gabriel
Question
62
Apa akibat utama tekanan minyak lumas terlalu rendah saat mesin beroperasi?
What is the main effect if lubricating oil pressure is too low while the engine is operating?
Options
a
Bantalan dan komponen bergerak dapat cepat rusak karena pelumasan tidak cukup
Bearings and moving components may be quickly damaged due to insufficient lubrication
b
Bahan bakar menjadi terlalu panas
The fuel becomes too hot
c
Udara start menjadi terlalu lembap
The starting air becomes too damp
d
Air bilga tidak dapat dipisahkan
Bilge water cannot be separated
Grade
Easy
Last Update
05 Aug 2026 11:18
By Gabriel
Question
63
Apa fungsi relief valve pada sistem pelumasan?
What is the function of the relief valve in the lubrication system?
Options
a
Membatasi tekanan berlebih dan melindungi komponen sistem
To limit excessive pressure and protect system components
b
Menurunkan temperatur minyak lumas di cooler
To reduce lubricating oil temperature in the cooler
c
Menambah debit minyak lumas ke injector
To increase lubricating oil flow to the injector
d
Mengarahkan gas buang ke economizer
To direct exhaust gas to the economizer
Grade
Easy
Last Update
05 Aug 2026 11:18
By Gabriel
Question
64
Mengapa pre-lubrication dilakukan sebelum mesin di-start?
Why is pre-lubrication carried out before the engine is started?
Options
a
Agar permukaan gesek telah mendapat lapisan minyak sebelum berputar
So that friction surfaces have an oil film before rotating
b
Agar bahan bakar langsung menyala tanpa kompresi
So that the fuel ignites immediately without compression
c
Agar air pendingin tidak perlu dipompa
So that cooling water does not need to be pumped
d
Agar udara start dapat disimpan lebih lama
So that starting air can be stored longer
Grade
Easy
Last Update
05 Aug 2026 11:19
By Gabriel
Question
65
Apa keuntungan penggunaan duplex filter pada sistem pelumasan?
What is the advantage of using a duplex filter in the lubrication system?
Options
a
Pembersihan atau penggantian elemen dapat dilakukan tanpa menghentikan aliran minyak
Cleaning or replacing the element can be done without stopping the oil flow
b
Tekanan minyak selalu naik dua kali lipat
Oil pressure always doubles
c
Minyak lumas dapat dipakai tanpa pendinginan
Lubricating oil can be used without cooling
d
Filter dapat digunakan sebagai purifier cadangan
The filter can be used as a standby purifier
Grade
Easy
Last Update
05 Aug 2026 11:19
By Gabriel
Question
66
Apa fungsi mist detector atau oil mist detector pada crankcase?
What is the function of the mist detector or oil mist detector in the crankcase?
Options
a
Mendeteksi kabut minyak yang dapat menjadi tanda awal bahaya ledakan crankcase
To detect oil mist that may indicate the early danger of a crankcase explosion
b
Mendeteksi kadar garam dalam air pendingin
To detect salt content in cooling water
c
Mengukur viskositas bahan bakar berat
To measure the viscosity of heavy fuel oil
d
Mengatur putaran turbocharger otomatis
To regulate turbocharger speed automatically
Grade
Easy
Last Update
05 Aug 2026 11:20
By Gabriel
Question
67
Apa fungsi transfer pump pada sistem bahan bakar?
What is the function of the transfer pump in the fuel system?
Options
a
Memindahkan bahan bakar dari storage tank ke settling tank atau tanki lain
To transfer fuel from the storage tank to the settling tank or another tank
b
Menaikkan tekanan injeksi langsung ke injector
To raise injection pressure directly to the injector
c
Mendinginkan bahan bakar di service tank
To cool fuel in the service tank
d
Membuang sludge dari purifier ke laut
To discharge sludge from the purifier to the sea
Grade
Easy
Last Update
05 Aug 2026 11:20
By Gabriel
Question
68
Apa fungsi settling tank pada sistem bahan bakar?
What is the function of the settling tank in the fuel system?
Options
a
Mengendapkan air dan kotoran kasar dari bahan bakar sebelum pemurnian
To settle water and coarse impurities from the fuel before purification
b
Mencampur minyak lumas dengan bahan bakar
To mix lubricating oil with fuel
c
Mendinginkan bahan bakar sebelum bunker
To cool fuel before bunkering
d
Menampung udara start cadangan
To store reserve starting air
Grade
Easy
Last Update
05 Aug 2026 11:20
By Gabriel
Question
69
Apa fungsi purifier bahan bakar?
What is the function of the fuel purifier?
Options
a
Memisahkan air dan kotoran halus dari bahan bakar
To separate water and fine impurities from the fuel
b
Menaikkan angka setana bahan bakar
To increase the cetane number of the fuel
c
Mendinginkan bahan bakar sebelum pembakaran
To cool the fuel before combustion
d
Mengukur titik nyala bahan bakar secara terus-menerus
To measure the flash point of the fuel continuously
Grade
Easy
Last Update
05 Aug 2026 11:21
By Gabriel
Question
70
Apa fungsi service tank bahan bakar?
What is the function of the fuel service tank?
Options
a
Menyediakan bahan bakar yang sudah lebih bersih dan siap dipakai mesin
To provide cleaner fuel that is ready for engine use
b
Menampung sludge hasil purifier
To collect sludge from the purifier
c
Menjadi tempat pengisian awal udara start
To serve as the initial filling point for starting air
d
Menjadi tempat pendinginan minyak lumas
To cool lubricating oil
Grade
Easy
Last Update
05 Aug 2026 11:22
By Gabriel