Question
2361
Kapan bahan bakar diinjeksikan pada mesin diesel 2 langkah?
When is fuel injected in a 2-stroke diesel engine?
Options
a
Menjelang piston mencapai TMA setelah udara termampatkan
Just before the piston reaches TDC after the air has been compressed
b
Saat piston mulai turun dari TMA
When the piston starts moving down from TDC
c
Ketika lubang bilas mulai terbuka
When the scavenge ports begin to open
d
Pada saat piston berada tepat di TMB
When the piston is exactly at BDC
Grade
Ungraded
Last Update
-
By -
Question
2362
Pada mesin diesel 2 langkah, apa yang terjadi saat piston bergerak dari TMA ke TMB?
In a 2-stroke diesel engine, what happens when the piston moves from TDC to BDC?
Options
a
Terjadi langkah usaha, kemudian lubang buang dan bilas terbuka untuk pembuangan dan pembilasan
The power stroke occurs, then the exhaust and scavenge ports open for exhaust and scavenging
b
Terjadi langkah kompresi dengan kedua katup tertutup
The compression stroke occurs with both valves closed
c
Udara masuk melalui katup hisap dan bahan bakar dibuang
Air enters through the intake valve and fuel is discharged
d
Minyak lumas dipompa ke service tank
Lubricating oil is pumped to the service tank
Grade
Ungraded
Last Update
-
By -
Question
2363
Apa keunggulan utama mesin diesel 2 langkah dibanding mesin diesel 4 langkah?
What is the main advantage of a 2-stroke diesel engine compared to a 4-stroke diesel engine?
Options
a
Menghasilkan langkah usaha pada setiap satu putaran poros engkol
It produces a power stroke in every one crankshaft revolution
b
Memerlukan dua putaran poros engkol untuk setiap langkah usaha
It requires two crankshaft revolutions for every power stroke
c
Menggunakan sistem pengapian busi
It uses a spark ignition system
d
Tidak memerlukan udara bilas
It does not require scavenge air
Grade
Ungraded
Last Update
-
By -
Question
2364
Apa fungsi blower bilas atau turbocharger pada mesin 2 langkah?
What is the function of the scavenge blower or turbocharger in a 2-stroke engine?
Options
a
Menyuplai udara bilas ke silinder agar pembilasan dan pengisian berlangsung baik
To supply scavenge air to the cylinder so that scavenging and charging take place properly
b
Menyuplai bahan bakar bertekanan tinggi ke injector
To supply high-pressure fuel to the injector
c
Mengalirkan minyak lumas ke bantalan utama
To deliver lubricating oil to the main bearings
d
Menurunkan tekanan udara start di manifold
To reduce starting air pressure in the manifold
Grade
Ungraded
Last Update
-
By -
Question
2365
Apa tujuan proses scavenging pada mesin diesel 2 langkah?
What is the purpose of the scavenging process in a 2-stroke diesel engine?
Options
a
Membuang gas sisa pembakaran dan menggantinya dengan udara segar
To remove residual combustion gas and replace it with fresh air
b
Mendinginkan bahan bakar sebelum injeksi
To cool the fuel before injection
c
Mengembunkan uap air di dalam silinder
To condense water vapor inside the cylinder
d
Menaikkan kadar karbon di ruang bakar
To increase the carbon content in the combustion space
Grade
Ungraded
Last Update
-
By -
Question
2366
Udara pejalan untuk start mesin induk diproduksi oleh peralatan apa?
What equipment produces the starting air for starting the main engine?
Options
a
Kompresor udara
Air compressor
b
Pompa bilga
Bilge pump
c
Purifier
Purifier
d
Fresh water generator
Fresh water generator
Grade
Ungraded
Last Update
-
By -
Question
2367
Berapa kisaran tekanan kerja udara pejalan pada sistem start mesin induk?
What is the working pressure range of starting air in the main engine starting system?
Options
a
Sekitar 25 sampai 30 bar
Around 25 to 30 bar
b
Sekitar 5 sampai 10 bar
Around 5 to 10 bar
c
Sekitar 12 sampai 15 bar
Around 12 to 15 bar
d
Sekitar 40 sampai 50 bar
Around 40 to 50 bar
Grade
Ungraded
Last Update
-
By -
Question
2368
Menurut SOLAS, mesin induk direct drive tanpa reduction gear harus dapat distart minimal berapa kali tanpa pengisian ulang?
According to SOLAS, how many times must a direct-drive main engine without reduction gear be capable of starting at a minimum without recharging?
Options
a
12 kali
12 times
b
6 kali
6 times
c
8 kali
8 times
d
15 kali
15 times
Grade
Ungraded
Last Update
-
By -
Question
2369
Mesin induk dengan reduction gear harus dapat distart minimal berapa kali tanpa pengisian ulang udara?
How many times must a main engine with reduction gear be capable of starting at a minimum without recharging the air?
Options
a
6 kali
6 times
b
12 kali
12 times
c
10 kali
10 times
d
4 kali
4 times
Grade
Ungraded
Last Update
-
By -
Question
2370
Sistem starting mesin induk kapal umumnya menggunakan media apa?
What medium is generally used in a ship main engine starting system?
Options
a
Udara bertekanan
Compressed air
b
Air laut bertekanan
Pressurized seawater
c
Minyak lumas bertekanan
Pressurized lubricating oil
d
Uap jenuh bertekanan rendah
Low-pressure saturated steam
Grade
Ungraded
Last Update
-
By -