Question
3181
Prinsip dasar kerja sistem kompresi uap pada pendingin makanan adalah...
The basic working principle of a vapor-compression food refrigeration system is to...
Options
a
Memampatkan uap refrigeran, mengembunkannya, menurunkan tekanannya, lalu menguapkannya kembali
Compress refrigerant vapor, condense it, reduce its pressure, then evaporate it again
b
Memanaskan udara ruang sampai kelembabannya turun
Heat the room air until its humidity decreases
c
Mengubah air laut menjadi refrigeran cair
Convert seawater into liquid refrigerant
d
Menghentikan sirkulasi udara agar ruang cepat dingin
Stop air circulation so the room cools quickly
Grade
Ungraded
Last Update
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Question
3182
Penurunan suhu pada evaporator terjadi karena...
The temperature drop at the evaporator occurs because...
Options
a
Refrigeran menyerap panas saat berubah fase menjadi gas
The refrigerant absorbs heat as it changes phase into gas
b
Tekanan kondensor naik di atas nilai kerja
The condenser pressure rises above the operating value
c
Kelembaban udara ruang turun mendadak
The room air humidity suddenly decreases
d
Kapasitas kompresor diturunkan ke posisi minimum
The compressor capacity is reduced to minimum
Grade
Ungraded
Last Update
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Question
3183
Pada sistem pendingin makanan, kondensor berfungsi untuk...
In a food refrigeration system, the condenser functions to...
Options
a
Membuang panas ke lingkungan dan mengubah uap refrigeran menjadi cair
Reject heat to the surroundings and change refrigerant vapor into liquid
b
Mengubah refrigeran cair menjadi gas jenuh
Change liquid refrigerant into saturated vapor
c
Memompa udara ke dalam evaporator
Pump air into the evaporator
d
Menurunkan tekanan di sisi hisap kompresor
Reduce pressure on the compressor suction side
Grade
Ungraded
Last Update
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Question
3184
Peran utama katup ekspansi dalam sistem pendingin adalah...
The main role of the expansion valve in a refrigeration system is to...
Options
a
Mengontrol aliran refrigeran menuju evaporator sekaligus menurunkan tekanannya
Control the refrigerant flow to the evaporator while reducing its pressure
b
Menaikkan tekanan refrigeran sebelum masuk kondensor
Increase refrigerant pressure before entering the condenser
c
Mendorong udara ruang ke saluran balik
Push room air into the return duct
d
Mengubah gas refrigeran menjadi cair jenuh
Convert refrigerant gas into saturated liquid
Grade
Ungraded
Last Update
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Question
3185
Setelah melewati evaporator, refrigeran umumnya berada dalam kondisi...
After passing through the evaporator, the refrigerant is generally in the condition of...
Options
a
Uap bertekanan rendah
Low-pressure vapor
b
Cair bertekanan tinggi
High-pressure liquid
c
Campuran padat dan gas
A mixture of solid and gas
d
Cair jenuh bertekanan tinggi
High-pressure saturated liquid
Grade
Ungraded
Last Update
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Question
3186
Panas dapat diserap oleh evaporator karena...
Heat can be absorbed by the evaporator because...
Options
a
Refrigeran menguap pada tekanan rendah di dalam evaporator
The refrigerant evaporates at low pressure inside the evaporator
b
Kondensor meningkatkan suhu secara bertahap
The condenser gradually increases the temperature
c
Kipas ruang muat menghentikan sirkulasi udara
The cargo-space fan stops air circulation
d
Tekanan oli kompresor turun di bawah normal
The compressor oil pressure falls below normal
Grade
Ungraded
Last Update
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Question
3187
Panas dilepaskan oleh kondensor karena...
Heat is rejected by the condenser because...
Options
a
Refrigeran mengembun dari uap menjadi cair
The refrigerant condenses from vapor into liquid
b
Refrigeran menguap kembali menjadi gas
The refrigerant evaporates again into gas
c
Udara balik menjadi lebih lembab
The return air becomes more humid
d
Katup ekspansi menutup penuh
The expansion valve closes fully
Grade
Ungraded
Last Update
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Question
3188
Perbedaan utama antara sistem pendingin kompresi uap dan sistem penyerapan adalah...
The main difference between a vapor-compression refrigeration system and an absorption system is that...
Options
a
Sistem penyerapan menggunakan sumber energi panas sebagai penggerak utama
The absorption system uses a heat source as the main driving energy
b
Sistem kompresi selalu memakai air sebagai refrigeran
The compression system always uses water as refrigerant
c
Sistem penyerapan tidak memerlukan kondensor
The absorption system does not require a condenser
d
Sistem kompresi tidak memerlukan evaporator
The compression system does not require an evaporator
Grade
Ungraded
Last Update
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Question
3189
Cara terbaik menjaga efisiensi sistem pendingin makanan kapal adalah...
The best way to maintain the efficiency of a ship food refrigeration system is to...
Options
a
Rutin membersihkan evaporator dan kondensor serta memeriksa parameter operasi
Regularly clean the evaporator and condenser and check operating parameters
b
Mengurangi aliran udara ke kondensor agar tekanan turun
Reduce airflow to the condenser so the pressure drops
c
Menambah refrigeran secara berlebihan untuk mempercepat pendinginan
Overcharge refrigerant to speed up cooling
d
Menutup katup ekspansi agar kompresor bekerja ringan
Close the expansion valve so the compressor works lighter
Grade
Ungraded
Last Update
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Question
3190
Jika terjadi kebocoran refrigeran pada sistem pendingin, tindakan yang benar adalah...
If a refrigerant leak occurs in the refrigeration system, the correct action is to...
Options
a
Memeriksa dan memperbaiki kebocoran secepat mungkin
Inspect and repair the leak as soon as possible
b
Membiarkan kebocoran sampai sistem berhenti sendiri
Allow the leak to continue until the system stops by itself
c
Menambah refrigeran terus-menerus tanpa mencari titik bocor
Keep adding refrigerant without locating the leak
d
Menutup katup ekspansi agar kebocoran berkurang
Close the expansion valve so the leak decreases
Grade
Ungraded
Last Update
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