Question
91
Apa ciri utama pompa sentrifugal?
What is the main characteristic of a centrifugal pump?
Options
a
Cocok untuk debit besar dengan aliran relatif kontinu
It is suitable for large flow rates with relatively continuous flow
b
Selalu menghasilkan debit tetap tanpa pengaruh head
It always produces a fixed flow regardless of head
c
Tidak boleh digunakan untuk air sama sekali
It must never be used for water
d
Bekerja hanya dengan udara tekan
It operates only with compressed air
Grade
Ungraded
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Question
92
Apa ciri utama pompa perpindahan positif?
What is the main characteristic of a positive displacement pump?
Options
a
Mampu menghasilkan tekanan tinggi dengan debit per putaran yang relatif tetap
It can produce high pressure with a relatively constant flow per revolution
b
Hanya dapat bekerja jika casing terisi udara
It can only operate if the casing is filled with air
c
Tidak cocok untuk oli dan bahan bakar
It is not suitable for oil and fuel
d
Tidak membutuhkan katup pengaman
It does not require a safety valve
Grade
Ungraded
Last Update
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Question
93
Apa fungsi bilge pump di kamar mesin?
What is the function of the bilge pump in the engine room?
Options
a
Memompa got dari bilge well ke sistem pembuangan yang diizinkan
To pump bilge water from the bilge well to the permitted discharge system
b
Menyemprotkan bahan bakar ke ruang bakar
To spray fuel into the combustion chamber
c
Mengisi air laut ke expansion tank
To fill the expansion tank with seawater
d
Menaikkan tekanan udara bilas
To increase scavenging air pressure
Grade
Ungraded
Last Update
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Question
94
Apa fungsi purifier bahan bakar?
What is the function of the fuel purifier?
Options
a
Membersihkan bahan bakar dari air dan partikel halus dengan gaya sentrifugal
To clean fuel of water and fine particles by centrifugal force
b
Mengabutkan bahan bakar ke dalam silinder
To atomize fuel into the cylinder
c
Mengubah bahan bakar berat menjadi gas
To convert heavy fuel into gas
d
Menaikkan angka setana bahan bakar
To increase the cetane number of the fuel
Grade
Ungraded
Last Update
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Question
95
Perbedaan utama purifier dan clarifier adalah?
What is the main difference between a purifier and a clarifier?
Options
a
Purifier memisahkan minyak dari air dan padatan, clarifier terutama memisahkan padatan dari minyak
A purifier separates oil from water and solids, while a clarifier mainly separates solids from oil
b
Purifier untuk udara start, clarifier untuk gas buang
A purifier is for starting air, while a clarifier is for exhaust gas
c
Purifier untuk minyak lumas, clarifier untuk air ballast saja
A purifier is for lubricating oil, while a clarifier is only for ballast water
d
Purifier memakai filter, clarifier tidak berputar
A purifier uses a filter, while a clarifier does not rotate
Grade
Ungraded
Last Update
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Question
96
Apa fungsi air compressor pada kapal?
What is the function of the air compressor on board?
Options
a
Menghasilkan udara bertekanan untuk start dan keperluan pneumatik
To produce compressed air for starting and pneumatic purposes
b
Mendinginkan minyak lumas sebelum masuk mesin
To cool lubricating oil before it enters the engine
c
Memisahkan air dari bahan bakar berat
To separate water from heavy fuel
d
Menggerakkan poros baling-baling secara langsung
To drive the propeller shaft directly
Grade
Ungraded
Last Update
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Question
97
Apa fungsi intercooler pada kompresor bertingkat?
What is the function of the intercooler in a multistage compressor?
Options
a
Mendinginkan udara antar tingkat kompresi agar kerja kompresor lebih efisien
To cool the air between compression stages so compressor work becomes more efficient
b
Menaikkan tekanan akhir tanpa menambah kerja kompresor
To increase final pressure without increasing compressor work
c
Memisahkan minyak lumas dari bahan bakar
To separate lubricating oil from fuel
d
Menyuplai udara bilas ke silinder tanpa blower
To supply scavenging air to the cylinder without a blower
Grade
Ungraded
Last Update
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Question
98
Apa fungsi safety valve pada ketel bantu?
What is the function of the safety valve on an auxiliary boiler?
Options
a
Melepas tekanan berlebih agar ketel tetap aman
To release excess pressure so the boiler remains safe
b
Menambah tekanan uap saat pembakaran lemah
To increase steam pressure when combustion is weak
c
Mengatur tinggi air ketel di gelas penduga
To regulate boiler water level in the gauge glass
d
Mengalirkan bahan bakar ke burner secara manual
To deliver fuel to the burner manually
Grade
Ungraded
Last Update
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Question
99
Apa fungsi feed check valve pada ketel?
What is the function of the feed check valve on a boiler?
Options
a
Mencegah aliran balik air ketel ke pipa air pengisi
To prevent boiler water from flowing back into the feed line
b
Mengatur tekanan udara start ke receiver
To regulate starting air pressure to the receiver
c
Membuang sludge dari dasar ketel
To discharge sludge from the bottom of the boiler
d
Mendinginkan uap sebelum masuk superheater
To cool steam before it enters the superheater
Grade
Ungraded
Last Update
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Question
100
Apa fungsi economizer pada sistem ketel atau gas buang?
What is the function of the economizer in a boiler or exhaust gas system?
Options
a
Memanfaatkan panas gas buang untuk memanaskan air pengisi sehingga efisiensi meningkat
To utilize exhaust gas heat to warm feed water so efficiency increases
b
Menurunkan tekanan uap utama sebelum masuk turbin
To reduce main steam pressure before it enters the turbine
c
Mengubah air laut menjadi minyak lumas
To convert seawater into lubricating oil
d
Menyimpan uap jenuh untuk keperluan start mesin
To store saturated steam for engine starting
Grade
Ungraded
Last Update
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