Pretest Instalasi Motor Listrik DOL
Quiz
•
Other
•
11th Grade
•
Practice Problem
•
Hard
Wahyu Hermawan
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apa tujuan utama dari metode starting motor Direct On Line (DOL)?
Mengurangi arus starting motor
Menghemat energi listrik
Menyalakan motor secara langsung pada tegangan penuh
Mengurangi kecepatan motor saat start
Melindungi motor dari beban berlebih
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Komponen utama dalam ragkaian kontrol DOL adalah:
Timer, sensor suhu, PLC
Kontaktor, overload relay, push button
Sensor cahaya, saklar limit, buzzer
Timer, kontaktor, inverter
Relay solid state, PLC, motor servo
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fungsi dari overload relay dalam rangkaian DOL adalah:
Mempercepat proses starting
Melindungi motor dari beban lebih
Meningkatkan kecepatan motor
Menurunkan tegangan suplai
Menstabilkan arus saat starting
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apa yang terjadi jika tombol push button STOP ditekan dalam rangkaian DOL?
Motor akan mulai berputar
Motor akan berhenti berputar
Motor akan berputar lebih cepat
Motor akan berputar terbalik
Motor akan berputar dengan kecepatan rendah
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada sistem DOL, kontaktor berfungsi untuk:
Mengatur kecepatan motor
Menyambungkan atau memutuskan suplai listrik ke motor
Menahan arus listrik agar tidak naik
Membalikkan arah putaran motor
Memutuskan suplai listrik secara otomatis saat motor berjalan
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada rangkaian DOL, arus starting motor umumnya sebesar:
1–2 kali arus nominal
3–5 kali arus nominal
6–8 kali arus nominal
10–15 kali arus nominal
Sama dengan arus nominal
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Simbol yang digunakan untuk menggambarkan push button normally open (NO) adalah:
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