Question
2941
Jika alarm low water level muncul, prioritas tindakan adalah ...
If the low water level alarm appears, the priority action is to ...
Options
a
mengikuti prosedur level air rendah dan memastikan kondisi boiler aman
follow the low-water-level procedure and ensure the boiler is safe
b
menaikkan laju pembakaran agar tekanan tidak turun
increase the firing rate so pressure does not fall
c
menutup semua indikator level
close all level indicators
d
membuka safety valve penuh tanpa evaluasi
fully open the safety valve without evaluation
Grade
Ungraded
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Question
2942
Jika temperatur cerobong atau high stack temperature terlalu tinggi, operator harus ...
If the stack temperature or high stack temperature is too high, the operator should ...
Options
a
memeriksa penyebab kehilangan panas seperti jelaga atau masalah perpindahan panas
check for causes of heat loss such as soot or heat transfer problems
b
menambah bahan bakar agar temperatur seimbang
add fuel so the temperature becomes balanced
c
membiarkan karena suhu cerobong tinggi selalu normal
leave it because high stack temperature is always normal
d
menurunkan level air drum
lower the drum water level
Grade
Ungraded
Last Update
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Question
2943
Jika terjadi flame impingement di ruang bakar, tindakan yang benar adalah ...
If flame impingement occurs in the furnace, the correct action is to ...
Options
a
menghentikan atau menyesuaikan operasi dan mencari penyebab arah nyala yang salah
stop or adjust operation and find the cause of the improper flame direction
b
meningkatkan laju pembakaran agar nyala menjauh sendiri
increase the firing rate so the flame moves away by itself
c
membiarkan selama tekanan uap cukup
leave it as long as steam pressure is adequate
d
menutup feedwater valve
close the feedwater valve
Grade
Ungraded
Last Update
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Question
2944
Jika terjadi fuel pressure imbalance pada boiler, tindakan yang tepat adalah ...
If fuel pressure imbalance occurs in the boiler, the proper action is to ...
Options
a
memeriksa sistem bahan bakar dan menormalkan tekanan sebelum operasi lanjut
inspect the fuel system and restore normal pressure before continuing operation
b
menambah udara pembakaran maksimum
increase combustion air to maximum
c
mengabaikannya selama tidak ada alarm api
ignore it as long as there is no flame alarm
d
membuka blowdown valve
open the blowdown valve
Grade
Ungraded
Last Update
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Question
2945
Jika terjadi feedwater temperature imbalance, operator harus ...
If feedwater temperature imbalance occurs, the operator should ...
Options
a
memeriksa pemanas air umpan, aliran, dan kendali temperatur
inspect the feedwater heater, flow, and temperature control
b
menambah bahan bakar ke burner utama
add fuel to the main burner
c
mengurangi ventilasi ruang mesin
reduce engine room ventilation
d
menutup seluruh sistem kondensat
close the entire condensate system
Grade
Ungraded
Last Update
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Question
2946
Uap basah dapat ditentukan secara lengkap jika diketahui ...
Wet steam can be completely specified if the following are known ...
Options
a
tekanan dan fraksi kekeringan
pressure and dryness fraction
b
tekanan saja
pressure only
c
temperatur saja
temperature only
d
fraksi kekeringan saja
dryness fraction only
Grade
Ungraded
Last Update
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Question
2947
Pada Mollier chart, garis tekanan konstan umumnya ...
On the Mollier chart, constant-pressure lines generally ...
Options
a
menyebar dari kiri ke kanan
diverge from left to right
b
menyebar dari kanan ke kiri
diverge from right to left
c
naik lalu turun secara simetris
rise and then fall symmetrically
d
selalu sejajar dengan garis entropi
always remain parallel to entropy lines
Grade
Ungraded
Last Update
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Question
2948
Pada titik kritis air-uap, kalor laten penguapan bernilai ...
At the critical point of water-steam, the latent heat of vaporization is ...
Options
a
nol
zero
b
maksimum
maximum
c
minimum tetapi tidak nol
minimum but not zero
d
bergantung hanya pada volume spesifik
dependent only on specific volume
Grade
Ungraded
Last Update
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Question
2949
Sifat air dan uap menjadi identik pada tekanan sekitar ...
The properties of water and steam become identical at a pressure of about ...
Options
a
225,6 kg/cm²
225.6 kg/cm²
b
0,1 kg/cm²
0.1 kg/cm²
c
1 kg/cm²
1 kg/cm²
d
100 kg/cm²
100 kg/cm²
Grade
Ungraded
Last Update
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Question
2950
Secara teoritis, ekspansi uap ideal di turbin berlangsung dengan entropi yang ...
Theoretically, ideal steam expansion in a turbine takes place with entropy ...
Options
a
tetap
remaining constant
b
meningkat perlahan
increasing gradually
c
menurun tajam
decreasing sharply
d
berubah acak sesuai beban
changing randomly with load
Grade
Ungraded
Last Update
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