Question
2801
Oil separator pada saluran buang kompresor dipasang untuk…
An oil separator on the compressor discharge line is installed to…
Options
a
Memisahkan oli yang ikut terbawa uap refrigeran dan mengembalikannya ke kompresor.
Separate oil carried with the refrigerant vapour and return it to the compressor.
b
Menaikkan tekanan refrigeran cair sebelum katup ekspansi.
Raise liquid refrigerant pressure before the expansion valve.
c
Menyaring kelembapan dari liquid line.
Remove moisture from the liquid line.
d
Mengatur suhu ruang muat reefer.
Control reefer cargo space temperature.
Grade
Ungraded
Last Update
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Question
2802
Bila oli pelumas kompresor berkurang karena terbawa sirkulasi, dampaknya adalah…
If compressor lubricating oil decreases because it is carried into circulation, the effect is…
Options
a
Pelumasan menurun dan keausan komponen kompresor meningkat.
Reduced lubrication and increased wear of compressor components.
b
Evaporator menjadi lebih dingin dari set point.
The evaporator becoming colder than the set point.
c
Receiver cair otomatis terisi lebih penuh.
The liquid receiver automatically becoming fuller.
d
Kondensor menjadi bebas dari non-condensable gas.
The condenser becoming free from non-condensable gas.
Grade
Ungraded
Last Update
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Question
2803
Oil differential pressure switch melindungi kompresor dengan cara…
An oil differential pressure switch protects the compressor by…
Options
a
Menghentikan kompresor bila beda tekanan oli pelumas tidak mencukupi.
Stopping the compressor if the lubricating oil pressure differential is insufficient.
b
Membuka katup ekspansi saat tekanan hisap turun.
Opening the expansion valve when suction pressure falls.
c
Meningkatkan aliran air laut ke kondensor.
Increasing cooling water flow to the condenser.
d
Mengalirkan kembali refrigeran cair ke receiver.
Returning liquid refrigerant to the receiver.
Grade
Ungraded
Last Update
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Question
2804
Liquid accumulator pada pipa isap dipasang untuk…
A liquid accumulator on the suction line is installed to…
Options
a
Mencegah cairan refrigeran masuk langsung ke kompresor.
Prevent liquid refrigerant from entering the compressor directly.
b
Menyimpan refrigeran cair sisi tinggi setelah kondensor.
Store high-side liquid refrigerant after the condenser.
c
Mengukur kadar air dalam refrigeran cair.
Measure moisture content in liquid refrigerant.
d
Menaikkan superheat pada saluran buang.
Increase superheat in the discharge line.
Grade
Ungraded
Last Update
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Question
2805
Masuknya cairan refrigeran ke kompresor secara mendadak dapat menyebabkan…
A sudden entry of liquid refrigerant into the compressor can cause…
Options
a
Liquid slugging yang berpotensi merusak katup dan piston.
Liquid slugging that may damage valves and pistons.
b
Pendinginan kondensor menjadi lebih efektif.
Condenser cooling to become more effective.
c
Tekanan buang turun ke titik vakum.
Discharge pressure to fall to vacuum.
d
Kadar oli pelumas bertambah dengan sendirinya.
Lubricating oil quantity to increase by itself.
Grade
Ungraded
Last Update
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By -
Question
2806
Kondensor yang kotor oleh kerak air laut akan mengakibatkan…
A condenser fouled by seawater scale will result in…
Options
a
Perpindahan panas menurun dan tekanan kondensasi naik.
Reduced heat transfer and increased condensing pressure.
b
Tekanan hisap naik tanpa perubahan lain.
Increased suction pressure without any other change.
c
Sight glass selalu jernih tanpa gelembung.
The sight glass always remaining clear without bubbles.
d
Katup ekspansi menutup penuh secara permanen.
The expansion valve closing fully on a permanent basis.
Grade
Ungraded
Last Update
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Question
2807
Bila suhu air pendingin kondensor naik, maka kecenderungan yang terjadi adalah…
If condenser cooling water temperature rises, the tendency will be…
Options
a
Tekanan buang refrigeran meningkat.
Refrigerant discharge pressure increases.
b
Tekanan hisap refrigeran turun menjadi vakum.
Refrigerant suction pressure falls into vacuum.
c
Superheat evaporator hilang seluruhnya.
Evaporator superheat disappears completely.
d
Receiver cair berubah fungsi menjadi separator oli.
The liquid receiver changes function into an oil separator.
Grade
Ungraded
Last Update
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By -
Question
2808
Adanya udara atau gas tidak terkondensasi dalam kondensor akan menyebabkan…
The presence of air or non-condensable gas in the condenser will cause…
Options
a
Tekanan kondensasi lebih tinggi dari normal.
Condensing pressure to be higher than normal.
b
Tekanan hisap turun karena evaporator kekurangan oli.
Suction pressure to fall because the evaporator lacks oil.
c
Katup ekspansi membuka penuh tanpa kendali.
The expansion valve to open fully without control.
d
Thermostat tidak lagi memerlukan sumber listrik.
The thermostat to no longer require an electrical supply.
Grade
Ungraded
Last Update
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Question
2809
Tindakan yang tepat untuk mengatasi gas tidak terkondensasi dalam sistem adalah…
The proper action to deal with non-condensable gas in the system is to…
Options
a
Melakukan purging pada titik yang sesuai setelah memastikan prosedur aman.
Carry out purging at the proper point after ensuring safe procedure.
b
Menambah oli pelumas ke dalam receiver cair.
Add lubricating oil into the liquid receiver.
c
Membuka semua pintu ruang dingin agar tekanan seimbang.
Open all cold room doors to balance pressure.
d
Menaikkan setelan thermostat setinggi mungkin.
Raise the thermostat setting as high as possible.
Grade
Ungraded
Last Update
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Question
2810
Bila aliran air laut ke kondensor terhenti, akibat pertama yang paling mungkin adalah…
If seawater flow to the condenser stops, the most likely first consequence is…
Options
a
Tekanan sisi tinggi cepat meningkat.
High-side pressure rises rapidly.
b
Tekanan hisap langsung menjadi nol absolut.
Suction pressure immediately becomes absolute zero.
c
Evaporator segera bebas dari bunga es.
The evaporator immediately becomes free of frost.
d
Filter drier otomatis mengeringkan sistem lebih cepat.
The filter drier automatically dries the system faster.
Grade
Ungraded
Last Update
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