Pre Post Basic Hydraulic
Authored by Kaprian Gunawan
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Professional Development
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30 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Salah satu efek dari peningkatan kecepatan fluida dalam sistem tertutup adalah…
Tekanan bertambah
Viskositas meningkat
Tekanan menurun
Volume fluida berubah
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Jika piston kecil diberi gaya 40 kgf dengan luas penampang 2 cm², berapa gaya yang dihasilkan pada piston besar dengan luas 80 cm²?
800 kgf
1.600 kgf
40 kgf
320 kgf
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Komponen hidrolik yang berfungsi untuk menjaga tekanan sistem tetap konstan walaupun terjadi fluktuasi beban adalah…
Directional valve
Flow control valve
Pressure reducing valve
Relief valve
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Mengapa tekanan hidrolik bisa meningkat jika aliran dipersempit oleh orifice?
Karena viskositas fluida meningkat
Karena gaya gesek menurun
Karena terjadi penumpukan tekanan di sisi upstream
Karena pompa meningkatkan RPM
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pada sistem hidrolik, jika tidak ada aliran dan hanya ada tekanan, maka…
Kerja tetap bisa dihasilkan
Tekanan akan naik tak terbatas
Tidak ada kerja yang dihasilkan
Pompa tetap bisa menghasilkan aliran
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Salah satu keuntungan sistem hidrolik dibandingkan mekanik adalah…
Biaya perawatan lebih murah
Komponen lebih ringan
Pengaturan kecepatan dan tekanan lebih fleksibel
Tidak memerlukan fluida khusus
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Apa yang terjadi jika terjadi chattering pada relief valve?
Tekanan sistem turun drastis
Aliran berhenti total
Timbul getaran dan potensi kerusakan mekanik
Sistem kembali ke tekanan nol
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