Question
91
Contoh fail-close pada control valve adalah...
If the sampling rate is too slow...
Options
a
Valve menutup secara otomatis saat kehilangan supply atau sinyal
Process changes may not be captured properly by the controller
b
Valve membuka penuh saat kehilangan supply
The automatic system will always become faster
c
Sensor menjadi tidak aktif
All noise will disappear
d
Controller mengubah set point
The sensor will no longer require calibration
Grade
Ungraded
Last Update
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Question
92
Redundansi sensor digunakan untuk...
A PLC receives input signals from...
Options
a
Meningkatkan keandalan pengukuran pada sistem penting
Sensors, switches, and other input devices
b
Menghilangkan semua controller
Hydraulic pumps only
c
Mengurangi jumlah data
Generators only
d
Mengubah closed loop menjadi open loop
Batteries only
Grade
Ungraded
Last Update
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Question
93
Voting logic 2-out-of-3 berarti...
A PLC output can be used to control...
Options
a
Dua dari tiga sensor harus menyetujui kondisi sebelum aksi tertentu dilakukan
Relays, contactors, solenoid valves, or actuators
b
Satu sensor selalu menentukan keputusan
Manual thermometers only
c
Ketiga sensor harus gagal
Pipes and tanks without actuators
d
Tidak ada sensor yang digunakan
Panel paint
Grade
Ungraded
Last Update
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Question
94
Trend monitoring digunakan untuk...
The PLC program in a control system is used to...
Options
a
Melihat perubahan parameter dari waktu ke waktu
Define the control logic and sequence of operations
b
Mengganti sensor secara otomatis
Mechanically increase fuel pressure
c
Mengubah AC menjadi DC
Replace all physical sensors
d
Meningkatkan set point
Generate electrical power
Grade
Ungraded
Last Update
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Question
95
Data logging pada sistem monitoring berguna untuk...
An Integrated Automation System (IAS) is used to...
Options
a
Menyimpan riwayat parameter, alarm, dan kejadian untuk analisis
Integrate monitoring, alarms, and control of various shipboard systems
b
Mengurangi akurasi sensor
Replace the propeller
c
Menghilangkan kebutuhan operator
Generate starting air
d
Menaikkan tekanan sistem
Increase tank capacity
Grade
Ungraded
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Question
96
Alarm history membantu operator untuk...
In an alarm and control system, the function of an alarm is to...
Options
a
Menelusuri urutan dan waktu terjadinya kondisi abnormal
Warn the operator when a parameter is outside the permitted range
b
Mengubah semua alarm menjadi trip
Always stop the machinery regardless of condition
c
Mengatur bahan bakar secara manual
Convert a sensor into an actuator
d
Mengukur tahanan isolasi
Automatically increase the setpoint
Grade
Ungraded
Last Update
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Question
97
Pada generator, AVR menggunakan feedback tegangan untuk...
An automatic shutdown differs from an alarm because a shutdown...
Options
a
Menjaga tegangan keluaran mendekati nilai yang ditetapkan
Can stop equipment when a hazardous condition reaches a specified limit
b
Mengatur tekanan oli
Only changes an indicator color
c
Mengukur temperatur winding
Does not require control logic
d
Mengatur level bahan bakar
Never uses sensors
Grade
Ungraded
Last Update
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Question
98
Governor pada generator menggunakan feedback kecepatan untuk...
The purpose of an interlock in a control system is to...
Options
a
Menjaga putaran dan frekuensi tetap stabil
Prevent unsafe operation or an incorrect operating sequence
b
Menjaga tegangan output
Increase overshoot
c
Mengukur arus beban
Eliminate all alarms
d
Mengubah sinyal analog menjadi digital
Increase steady-state error
Grade
Ungraded
Last Update
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Question
99
Pada automatic boiler control, sensor level air memberikan feedback untuk...
Sensor redundancy in critical systems is used to...
Options
a
Membantu controller menjaga level air sesuai set point
Improve measurement reliability and allow comparison if one sensor fails
b
Mengatur warna nyala api
Eliminate the need for a controller
c
Mengubah boiler menjadi open loop
Reduce all feedback signals
d
Mematikan seluruh sensor
Convert the system into open-loop control
Grade
Ungraded
Last Update
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Question
100
Tujuan akhir monitoring Electrical, Electronic and Control System adalah...
The ultimate objective of applying automatic control systems to shipboard machinery is to...
Options
a
Menjaga operasi permesinan tetap aman, stabil, andal, efisien, dan mudah didiagnosis
Keep processes safe, stable, efficient, and responsive to changing operating conditions
b
Menghilangkan semua alarm dan interlock
Eliminate all operators and protective systems
c
Membuat plant selalu bekerja manual
Increase process disturbances
d
Mengurangi seluruh feedback
Operate all systems without sensors
Grade
Ungraded
Last Update
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