Question
2871
Diameter fire tube pada boiler Cochran umumnya mendekati ...
The diameter of fire tubes in a Cochran boiler is generally about ...
Options
a
6 cm
6 cm
b
2 cm
2 cm
c
8 cm
8 cm
d
15 cm
15 cm
Grade
Ungraded
Last Update
-
By -
Question
2872
Efisiensi termal boiler kapal yang terawat baik umumnya berada di kisaran ...
The thermal efficiency of a well-maintained marine boiler is generally around ...
Options
a
sekitar 90%
about 90%
b
sekitar 30%
about 30%
c
sekitar 45%
about 45%
d
sekitar 55%
about 55%
Grade
Ungraded
Last Update
-
By -
Question
2873
Perbedaan utama boiler Cornish dan Lancashire adalah ...
The main difference between a Cornish boiler and a Lancashire boiler is that ...
Options
a
Cornish memiliki satu fire tube, sedangkan Lancashire memiliki dua fire tube
the Cornish boiler has one fire tube, while the Lancashire boiler has two fire tubes
b
Cornish adalah water tube sedangkan Lancashire adalah fire tube
the Cornish boiler is a water tube type, while the Lancashire boiler is a fire tube type
c
Cornish memakai dua ruang bakar sedangkan Lancashire tanpa ruang bakar
the Cornish boiler uses two furnaces, while the Lancashire boiler uses none
d
Cornish tidak memakai cerobong sedangkan Lancashire memakai cerobong
the Cornish boiler has no chimney, while the Lancashire boiler has one
Grade
Ungraded
Last Update
-
By -
Question
2874
Pada boiler Babcock and Wilcox, pipa air disusun ...
In a Babcock and Wilcox boiler, the water tubes are arranged ...
Options
a
miring
inclined
b
horizontal
horizontal
c
vertikal
vertical
d
tegak lurus terhadap drum
perpendicular to the drum
Grade
Ungraded
Last Update
-
By -
Question
2875
Water tube boiler adalah boiler yang ...
A water tube boiler is a boiler in which ...
Options
a
airnya mengalir di dalam pipa dan gas panas di luarnya
water flows inside the tubes and hot gases flow outside them
b
gas panas mengalir di dalam pipa dan air di luarnya
hot gases flow inside the tubes and water surrounds them
c
uapnya mengalir di dalam pipa dan air tetap diam
steam flows inside the tubes and water remains stationary
d
selalu memakai pembakaran listrik
electric firing is always used
Grade
Ungraded
Last Update
-
By -
Question
2876
Sebelum memulai prosedur penyalaan burner pada auxiliary boiler plant, tindakan awal yang paling penting adalah ...
Before beginning the burner ignition procedure on an auxiliary boiler plant, the most important initial action is to ...
Options
a
memastikan suplai bahan bakar tersedia dan siap digunakan
ensure that the fuel supply is available and ready for use
b
langsung membuka katup uap utama
immediately open the main steam valve
c
menutup semua jalur udara pembakaran
close all combustion air passages
d
menaikkan tekanan boiler ke batas kerja
raise the boiler pressure to working limit
Grade
Ungraded
Last Update
-
By -
Question
2877
Fungsi utama pilot burner adalah ...
The main function of the pilot burner is to ...
Options
a
menyalakan nyala utama secara aman
ignite the main flame safely
b
mendinginkan ruang bakar saat awal operasi
cool the furnace during startup
c
mengukur temperatur gas buang
measure the flue gas temperature
d
mengatur level air boiler
control the boiler water level
Grade
Ungraded
Last Update
-
By -
Question
2878
Purging pada penyalaan otomatis berarti ...
Purging during automatic ignition means ...
Options
a
membilas ruang bakar dengan udara untuk membuang gas mudah terbakar sisa
sweeping the furnace with air to remove residual combustible gases
b
mengisi ruang bakar dengan kabut bahan bakar
filling the furnace with a fuel mist
c
memanaskan boiler dengan uap bantu
heating the boiler with auxiliary steam
d
menurunkan tekanan udara pembakaran
reducing the combustion air pressure
Grade
Ungraded
Last Update
-
By -
Question
2879
Pada penyalaan manual burner, langkah yang perlu didahulukan adalah ...
During manual burner ignition, the step that should come first is to ...
Options
a
menyalakan pilot burner terlebih dahulu
ignite the pilot burner first
b
membuka penuh katup bahan bakar utama
fully open the main fuel valve
c
menutup air register seluruhnya
completely close the air register
d
membuka katup blowdown
open the blowdown valve
Grade
Ungraded
Last Update
-
By -
Question
2880
Fungsi combustion air blower adalah ...
The function of the combustion air blower is to ...
Options
a
menyuplai udara pembakaran ke ruang bakar
supply combustion air to the furnace
b
memompa air umpan ke boiler
pump feedwater into the boiler
c
menghisap kondensat dari steam line
draw condensate from the steam line
d
mendinginkan bahan bakar sebelum atomisasi
cool the fuel before atomization
Grade
Ungraded
Last Update
-
By -