Question
1731
Apa perbedaan pokok pompa sentrifugal dan pompa perpindahan positif?
What is the main difference between a centrifugal pump and a positive displacement pump?
Options
a
Pompa perpindahan positif mengalirkan volume relatif tetap per siklus, sedangkan pompa sentrifugal bergantung pada karakteristik aliran dan head
A positive displacement pump delivers a relatively fixed volume per cycle, whereas a centrifugal pump depends on flow and head characteristics
b
Pompa sentrifugal selalu lebih akurat pada fluida kental
A centrifugal pump is always more accurate for viscous fluids
c
Pompa perpindahan positif tidak memerlukan katup sama sekali
A positive displacement pump does not require any valves at all
d
Pompa sentrifugal tidak dapat dipakai di kapal niaga
A centrifugal pump cannot be used on merchant ships
Grade
Ungraded
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Question
1732
Apa yang dimaksud priming pada pompa?
What is meant by priming in pump operation?
Options
a
Proses mengisi rumah pompa dan pipa hisap dengan cairan sebelum pompa dioperasikan
The process of filling the pump casing and suction pipe with liquid before starting the pump
b
Proses mengecat badan pompa sebelum pemasangan
The process of painting the pump body before installation
c
Proses menaikkan tekanan udara di botol angin
The process of increasing air pressure in the air bottle
d
Proses menguras minyak lumas dari bantalan pompa
The process of draining lubricating oil from the pump bearings
Grade
Ungraded
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Question
1733
Apa tindakan yang benar jika terjadi kebocoran pada sistem pompa?
What is the correct action if a leak occurs in a pump system?
Options
a
Segera mengidentifikasi sumber kebocoran dan melakukan perbaikan dengan prosedur aman
To immediately identify the source of the leak and carry out repairs using safe procedures
b
Menambah putaran pompa agar cairan cepat habis
To increase the pump speed so the liquid runs out faster
c
Menutup semua ventilasi ruang mesin
To close all engine room ventilators
d
Membiarkan kebocoran kecil karena akan berhenti sendiri
To leave a small leak because it will stop on its own
Grade
Ungraded
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Question
1734
Apa yang dimaksud pompa resiprok?
What is meant by a reciprocating pump?
Options
a
Pompa yang memindahkan fluida dengan gerak bolak-balik piston atau plunger
A pump that moves fluid by the back-and-forth motion of a piston or plunger
b
Pompa yang menggunakan impeller terbuka berputar cepat
A pump using a rapidly rotating open impeller
c
Pompa yang hanya bekerja untuk bahan bakar ringan
A pump that works only for light fuel oil
d
Pompa yang mengalirkan fluida dengan pengaruh gravitasi
A pump that transfers fluid by gravity
Grade
Ungraded
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Question
1735
Apa yang perlu diperhatikan dalam perawatan rutin pompa?
What should be checked during routine pump maintenance?
Options
a
Kebersihan, kebocoran, getaran, suhu bantalan, pelumasan, dan kondisi kopling
Cleanliness, leakage, vibration, bearing temperature, lubrication, and coupling condition
b
Hanya warna fluida yang keluar dari pipa tekan
Only the color of the fluid leaving the discharge pipe
c
Besarnya ruang kosong di sekitar pondasi
The amount of free space around the foundation
d
Jumlah alat kerja yang disimpan di dekat pompa
The number of tools stored near the pump
Grade
Ungraded
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Question
1736
Apa yang dimaksud fire pump?
What is meant by a fire pump?
Options
a
Pompa yang memasok air bertekanan ke fire main untuk pemadaman kebakaran
A pump that supplies pressurized water to the fire main for firefighting
b
Pompa yang mengirim busa tanpa membutuhkan air
A pump that sends foam without requiring water
c
Pompa yang digunakan khusus untuk menguras tangki ballast
A pump used specifically to empty ballast tanks
d
Pompa yang hanya dipakai membersihkan rantai jangkar
A pump used only to wash anchor chains
Grade
Ungraded
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Question
1737
Apa yang harus dilakukan jika pompa mengalami overheating?
What should be done if a pump overheats?
Options
a
Menghentikan operasi bila perlu dan memeriksa penyebab seperti pelumasan, beban, gesekan, atau pendinginan
To stop operation if necessary and investigate causes such as lubrication, load, friction, or cooling problems
b
Menambah tekanan pada sisi tekan agar suhu turun
To increase pressure on the discharge side so the temperature falls
c
Membuka semua katup tanpa pemeriksaan
To open all valves without inspection
d
Menyiram motor listrik dengan air laut
To spray the electric motor with seawater
Grade
Ungraded
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Question
1738
Apa yang dimaksud self-priming pump?
What is meant by a self-priming pump?
Options
a
Pompa yang mampu mengeluarkan udara dari sisi hisap dan mulai mengalirkan cairan tanpa priming manual penuh
A pump that can remove air from the suction side and start delivering liquid without full external priming
b
Pompa yang tidak memerlukan tenaga penggerak
A pump that does not need any driving power
c
Pompa yang hanya bisa bekerja dalam ruang hampa
A pump that can only work in a vacuum
d
Pompa yang otomatis mengganti seal saat bocor
A pump that automatically replaces its seal when leaking
Grade
Ungraded
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Question
1739
Apa hal penting saat mengganti seal pompa?
What is important when replacing a pump seal?
Options
a
Membersihkan dudukan dan memastikan jenis serta pemasangan seal sesuai spesifikasi
Cleaning the seating surface and ensuring the correct type of seal is installed according to specification
b
Memasang seal baru saat poros masih berputar lambat
Installing the new seal while the shaft is still turning slowly
c
Menggunakan seal apa saja selama ukurannya mirip
Using any seal as long as the size looks similar
d
Menambah pelumas berlebihan agar kebocoran tertutup
Adding excessive lubricant so the leakage is covered
Grade
Ungraded
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Question
1740
Bagaimana cara mengatasi vapor lock pada pompa?
How can vapor lock in a pump be overcome?
Options
a
Membuang udara atau gas yang terjebak dan memastikan jalur isap terisi cairan
By venting trapped air or gas and ensuring the suction line is filled with liquid
b
Menutup katup isap rapat-rapat
By tightly closing the suction valve
c
Menaikkan suhu cairan setinggi mungkin
By increasing the fluid temperature as high as possible
d
Mengganti seluruh pipa tekan dengan ukuran lebih kecil
By replacing the entire discharge pipe with a smaller one
Grade
Ungraded
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