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Function 1 : Marine Engineering at the Operational Level
1.4 Operate Main And Auxiliary Machinery And Associated Control Systems (MPU)
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MARINE BOILER CONSTRUCTION - Question List

100 Questions   : 58easy 42medium 0hard 0nope
Question
41
Mengapa ketel pipa air lebih tahan terhadap tekanan tinggi?
Why is a water-tube boiler more resistant to high pressure?
Options
a
Karena konstruksi pipa pipa diameter nya lebih kecil .
Because its drum construction is small
b
Karena memiliki volume dapur yang besar
Because it has a large furnace volume
c
Karena memiliki kualitas air pengisian yang lebih buruk
Because it has poorer feedwater quality
d
Karena menggunakan bahan bakar yang lebih padat
Because it uses denser fuel
Grade
Medium
Last Update
29 Jul 2026 11:54
By Tanjung
Question
42
Ketel Schots hanya diizinkan memiliki tebal pelat maksimum untuk tekanan hingga...
A Scotch boiler is only allowed to have a maximum plate thickness for pressures up to...
Options
a
18 atm
18 atm
b
20 atm
20 atm
c
25 atm
25 atm
d
30 atm
30 atm
Grade
Medium
Last Update
29 Jul 2026 11:54
By Tanjung
Question
43
Keunggulan ketel pipa air dalam menghasilkan uap adalah...
An advantage of a water-tube boiler in steam production is...
Options
a
Dapat menghasilkan uap dengan suhu tinggi
It can produce high-temperature steam
b
Dapat bekerja pada tekanan rendah
It can operate at low pressure
c
Tidak memerlukan bahan bakar berkualitas tinggi
It does not require high-quality fuel
d
Tidak memerlukan pemanas lanjut
It does not require a superheater
Grade
Medium
Last Update
29 Jul 2026 11:55
By Tanjung
Question
44
Mengapa ketel pipa air dapat menghasilkan uap dengan suhu tinggi?
Why can a water-tube boiler produce high-temperature steam?
Options
a
Desain Ruang Bakar Luas
Because the pressure is high and the superheater tubes are properly arranged
b
Karena volumenya kecil
Because its volume is small
c
Karena memiliki lorong api yang panjang
Because it has a long fire path
d
Karena tidak memerlukan kualitas air pengisian yang baik
Because it does not require good feedwater quality
Grade
Medium
Last Update
29 Jul 2026 12:01
By Tanjung
Question
45
Volume dapur yang besar pada ketel pipa air memberikan keuntungan dalam...
A large furnace volume in a water-tube boiler provides the benefit of...
Options
a
Optimalisasi Perpindahan Panas Radiasi
Helping fuel combustion become more complete
b
Menurunkan tekanan dalam ketel
Reducing the pressure in the boiler
c
Mengurangi konsumsi bahan bakar
Reducing fuel consumption
d
Menurunkan suhu uap yang dihasilkan
Reducing the temperature of the steam produced
Grade
Medium
Last Update
29 Jul 2026 12:12
By Tanjung
Question
46
Salah satu kelemahan ketel pipa air dibanding ketel Schots adalah...
One disadvantage of a water-tube boiler compared with a Scotch boiler is...
Options
a
Memerlukan kualitas air pengisian yang lebih baik
It requires better feedwater quality
b
Memiliki tekanan yang lebih rendah
It has lower pressure
c
Tidak dapat menghasilkan uap dalam jumlah besar
It cannot produce large amounts of steam
d
Memiliki efisiensi pembakaran yang lebih rendah
It has lower combustion efficiency
Grade
Easy
Last Update
29 Jul 2026 12:12
By Tanjung
Question
47
Jika kualitas air pengisian buruk pada ketel pipa air, maka...
If the feedwater quality is poor in a water-tube boiler, then...
Options
a
Endapan kotoran pada pipa akan cepat bertambah dan dapat menyebabkan pipa terbakar
Deposits in the tubes will increase rapidly and may cause the tubes to burn out
b
Kotoran akan tersimpan di lorong api tanpa masalah
Impurities will remain in the fire path without problem
c
Tidak akan ada dampak pada ketel
There will be no effect on the boiler
d
Tekanan uap akan meningkat
The steam pressure will increase
Grade
Easy
Last Update
29 Jul 2026 12:16
By Tanjung
Question
48
Pada ketel Schots, endapan kotoran terjadi di bagian...
In a Scotch boiler, deposits occur in the...
Options
a
bagian bawah ketel (dasar cangkang/perut ketel)
Lower part of the fire tube
b
Dalam pipa air
Inside the water tubes
c
Permukaan atas air ketel
Upper surface of the boiler water
d
Di dalam ruang bakar
Inside the combustion chamber
Grade
Medium
Last Update
29 Jul 2026 12:18
By Tanjung
Question
49
Keuntungan ketel pipa air dalam hal tekanan uap adalah...
An advantage of a water-tube boiler in terms of steam pressure is...
Options
a
Dapat bekerja dengan tekanan lebih tinggi dibanding ketel Schots
It can operate at higher pressure than a Scotch boiler
b
Tidak membutuhkan pemanas lanjut
It does not require a superheater
c
Tidak memerlukan kualitas air pengisian yang baik
It does not require good feedwater quality
d
Volume dapurnya lebih kecil
Its furnace volume is smaller
Grade
Medium
Last Update
29 Jul 2026 12:19
By Tanjung
Question
50
Apa yang menyebabkan pipa-pipa air pada ketel pipa air bisa terbakar?
What causes water tubes in a water-tube boiler to burn out?
Options
a
Lumpur air yang mengendap pada sebagian pipa, sehingga air tidak terisi penuh
Water sludge deposits on part of the tubes, so the tubes are not completely filled with water
b
Kualitas air yang terlalu jernih
The water quality is too clear
c
Tekanan uap yang terlalu rendah
The steam pressure is too low
d
Tidak adanya pemanas lanjut
The absence of a superheater
Grade
Medium
Last Update
29 Jul 2026 12:20
By Tanjung
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