Question
1241
Alat yang mengedarkan air tawar pendingin di dalam mesin adalah?
What device circulates fresh cooling water through the engine?
Options
a
Pompa air tawar
Fresh water pump
b
Pompa bilga
Bilge pump
c
Pompa minyak lumas
Lubricating oil pump
d
Pompa bahan bakar tekanan tinggi
High-pressure fuel pump
Grade
Ungraded
Last Update
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Question
1242
Apa fungsi thermostat pada sistem pendingin?
What is the function of the thermostat in the cooling system?
Options
a
Mengatur aliran pendingin agar temperatur mesin mencapai nilai kerja yang tepat
To regulate coolant flow so the engine reaches the proper operating temperature
b
Meninggikan tekanan minyak lumas saat mesin dingin
To increase lubricating oil pressure during cold start
c
Mengatur suplai bahan bakar ke pompa injeksi
To regulate fuel supply to the injection pump
d
Membuka katup buang secara otomatis
To open the exhaust valve automatically
Grade
Ungraded
Last Update
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Question
1243
Jika temperatur air pendingin jaket terlalu tinggi, tindakan yang tepat adalah?
If the jacket cooling water temperature is too high, what is the correct action?
Options
a
Periksa aliran pendingin, kerja pompa, thermostat, dan cooler
Check coolant flow, pump operation, thermostat, and cooler
b
Tambahkan bahan bakar agar pembakaran lebih kuat
Add fuel so combustion becomes stronger
c
Tutup seluruh ventilasi ruang mesin
Close all engine room ventilation
d
Naikkan putaran mesin agar pendinginan lebih cepat
Increase engine speed so cooling becomes faster
Grade
Ungraded
Last Update
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Question
1244
Apa fungsi sea water cooler atau central cooler?
What is the function of a seawater cooler or central cooler?
Options
a
Membuang panas dari air tawar pendingin ke air laut
To remove heat from the fresh cooling water to seawater
b
Menambah kadar garam pada air tawar pendingin
To increase salt content in the fresh water
c
Memisahkan minyak lumas dari air pendingin
To separate lubricating oil from cooling water
d
Menyuplai udara bilas ke silinder
To supply scavenging air to the cylinder
Grade
Ungraded
Last Update
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Question
1245
Mengapa banyak mesin kapal memakai sistem pendingin sirkuit tertutup?
Why do many marine engines use a closed cooling system?
Options
a
Karena mengurangi korosi dan pengendapan pada bagian dalam mesin
Because it reduces corrosion and deposits inside the engine
b
Karena air laut lebih mahal daripada air tawar
Because seawater is more expensive than fresh water
c
Karena tidak memerlukan pompa sama sekali
Because it does not require a pump at all
d
Karena temperatur kerja mesin menjadi selalu rendah
Because engine operating temperature always becomes low
Grade
Ungraded
Last Update
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Question
1246
Salah satu tanda overheating pada mesin adalah?
What is one indication of engine overheating?
Options
a
Temperatur pendingin naik di atas batas normal dan tenaga mesin cenderung turun
Coolant temperature rises above normal and engine power tends to decrease
b
Tekanan kompresi naik tanpa perubahan temperatur
Compression pressure rises without any temperature change
c
Warna bahan bakar di service tank menjadi lebih gelap
Fuel color in the service tank becomes darker
d
Putaran turbocharger turun saat mesin berhenti
Turbocharger speed decreases when the engine stops
Grade
Ungraded
Last Update
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By -
Question
1247
Apa fungsi expansion tank dalam sistem pendingin?
What is the function of the expansion tank in the cooling system?
Options
a
Menampung pemuaian cairan pendingin dan membantu pembuangan udara dari sistem
To accommodate coolant expansion and help remove air from the system
b
Menaikkan tekanan bahan bakar ke injektor
To increase fuel pressure to the injector
c
Mengumpulkan sludge dari purifier
To collect sludge from the purifier
d
Menyimpan air bilga sebelum dibuang
To store fresh expansion water for the bilge system
Grade
Ungraded
Last Update
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Question
1248
Apa akibat overcooling pada mesin diesel?
What is the effect of overcooling on a diesel engine?
Options
a
Pembakaran kurang baik dan keausan dapat meningkat karena temperatur kerja terlalu rendah
Poor combustion and increased wear because operating temperature is too low
b
Tekanan oli selalu menjadi terlalu tinggi tanpa sebab lain
Oil pressure always becomes too high without another cause
c
Turbocharger berputar lebih cepat dari batas aman
The turbocharger rotates faster than the safe limit
d
Katup buang menjadi tertutup terus-menerus
The exhaust valve remains closed continuously
Grade
Ungraded
Last Update
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Question
1249
Siapa yang dikenal sebagai penemu mesin diesel?
Who is known as the inventor of the diesel engine?
Options
a
Rudolf Diesel
Rudolf Diesel
b
James Watt
James Watt
c
Nikola Tesla
Nikola Tesla
d
Henry Ford
Henry Ford
Grade
Ungraded
Last Update
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Question
1250
Di bagian mana energi panas hasil pembakaran diubah menjadi tekanan kerja utama?
In which part is heat energy from combustion converted into the main working pressure?
Options
a
Di dalam silinder
In the cylinder
b
Di dalam alternator
In the alternator
c
Di dalam purifier
In the purifier
d
Di dalam air cooler
In the air cooler
Grade
Ungraded
Last Update
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