Question
1161
Service tank dalam sistem bahan bakar berfungsi untuk…
A sudden entry of liquid refrigerant into the compressor can cause…
Options
a
Menyimpan bahan bakar sebelum disuplai ke mesin utama
Liquid slugging that may damage valves and pistons.
b
Menyaring kotoran dari udara mesin
Condenser cooling to become more effective.
c
Menurunkan suhu bahan bakar sebelum digunakan
Discharge pressure to fall to vacuum.
d
Mencampur bahan bakar dengan oli untuk efisiensi lebih tinggi
Lubricating oil quantity to increase by itself.
Grade
Ungraded
Last Update
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Question
1162
Bahan bakar dari kapal bunker dipindahkan ke…
A condenser fouled by seawater scale will result in…
Options
a
Tangki dasar berganda (double bottom)
Reduced heat transfer and increased condensing pressure.
b
Mesin induk secara langsung
Increased suction pressure without any other change.
c
Tangki harian tanpa pemanasan
The sight glass always remaining clear without bubbles.
d
Sistem kemudi kapal
The expansion valve closing fully on a permanent basis.
Grade
Ungraded
Last Update
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Question
1163
Transfer pump berfungsi untuk…
If condenser cooling water temperature rises, the tendency will be…
Options
a
Menghisap bahan bakar menuju tangki endapan (settling tank)
Refrigerant discharge pressure increases.
b
Meningkatkan tekanan bahan bakar sebelum pembakaran
Refrigerant suction pressure falls into vacuum.
c
Mendinginkan bahan bakar sebelum masuk mesin
Evaporator superheat disappears completely.
d
Mencampur bahan bakar dengan air laut
The liquid receiver changes function into an oil separator.
Grade
Ungraded
Last Update
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Question
1164
Fungsi settling tank dalam proses bunker adalah…
The presence of air or non-condensable gas in the condenser will cause…
Options
a
Mengendapkan kotoran dan air dalam bahan bakar
Condensing pressure to be higher than normal.
b
Menyaring udara di dalam bahan bakar
Suction pressure to fall because the evaporator lacks oil.
c
Mengurangi tekanan bahan bakar sebelum digunakan
The expansion valve to open fully without control.
d
Menampung bahan bakar tanpa proses pemanasan
The thermostat to no longer require an electrical supply.
Grade
Ungraded
Last Update
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Question
1165
Bahan bakar dipisahkan dari kotoran dengan menggunakan…
The proper action to deal with non-condensable gas in the system is to…
Options
a
Purifier
Carry out purging at the proper point after ensuring safe procedure.
b
Kompresor
Add lubricating oil into the liquid receiver.
c
Boiler
Open all cold room doors to balance pressure.
d
Generator
Raise the thermostat setting as high as possible.
Grade
Ungraded
Last Update
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Question
1166
Sebelum digunakan oleh mesin induk, bahan bakar harus melewati…
If seawater flow to the condenser stops, the most likely first consequence is…
Options
a
Pemanas dan saringan (strainer)
High-side pressure rises rapidly.
b
Pendingin untuk menurunkan suhu bahan bakar
Suction pressure immediately becomes absolute zero.
c
Tangki ballast untuk dicampur dengan air
The evaporator immediately becomes free of frost.
d
Generator sebelum masuk ke ruang bakar
The filter drier automatically dries the system faster.
Grade
Ungraded
Last Update
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Question
1167
Pompa sirkulasi dalam proses bunker berfungsi untuk…
An undercharge of refrigerant in the system is often indicated by…
Options
a
Memompa bahan bakar yang sudah dipanaskan ke sistem
Low suction pressure and poor cooling.
b
Mengendapkan bahan bakar lebih lanjut
Very high discharge pressure and sharply increased motor current.
c
Mencampurkan udara ke dalam bahan bakar
The condenser full of liquid and the room becoming too cold.
d
Menghilangkan tekanan dalam sistem bahan bakar
Compressor oil increasing continuously during operation.
Grade
Ungraded
Last Update
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Question
1168
Pompa injeksi (injection pump) atau bosch pump berfungsi untuk…
An overcharge of refrigerant may cause…
Options
a
Menekan bahan bakar dengan tekanan tinggi ke dalam injector
Condensing pressure to be high and compressor load to increase.
b
Menurunkan tekanan bahan bakar sebelum pembakaran
Suction pressure always to fall into vacuum under all conditions.
c
Mendinginkan bahan bakar sebelum digunakan
The evaporator to receive no refrigerant at all.
d
Mengalirkan bahan bakar langsung ke ruang bakar
The Low Pressure Cut Out to trip because the room is too hot.
Grade
Ungraded
Last Update
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Question
1169
Injector dalam proses bahan bakar berperan dalam…
If the expansion valve opening is too small, the symptom appearing at the evaporator is…
Options
a
Mengabutkan bahan bakar agar mudah terbakar
Insufficient refrigerant supply causing reduced cooling.
b
Menyaring udara dari bahan bakar
The evaporator floods with liquid and the compressor slugs.
c
Memanaskan bahan bakar hingga suhu 200°C
Condensing pressure falls to zero.
d
Mencampur bahan bakar dengan pelumas mesin
The liquid receiver overflows with seawater.
Grade
Ungraded
Last Update
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Question
1170
Tangki harian (service tank) memiliki fungsi untuk…
A refrigeration system with insufficient airflow across the evaporator will experience…
Options
a
Menyimpan bahan bakar yang sudah dipanaskan sebelum digunakan oleh mesin
Poor heat transfer and difficulty in reducing room temperature.
b
Mencampur bahan bakar dengan oli sebelum pembakaran
Discharge pressure immediately dropping to zero.
c
Menyaring udara sebelum masuk ke bahan bakar
The condenser becoming excessively cold.
d
Menurunkan suhu bahan bakar sebelum dipakai
The refrigerant charge increasing automatically.
Grade
Ungraded
Last Update
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