
Pre-Test Pump Operation & Maintenance
Authored by EVANS GROUP INDONESIA
Engineering
Professional Development
10 Questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Apa pengertian centrifugal pump (pompa)?
Sebuah alat untuk mentransfer cairan atau gas dengan gerakan mekanis.
Sebuah alat perpindahan cairan dengan gaya centrifugal.
Sebuah alat perpindahan cairan dengan mengurangi tekanan pada bagian hisap ujung impeller sehingga cairan akan terus memasuki ruang pompa.
Jawaban a, b dan c benar.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebutkan bagian utama komponen centrifugal pump yang berputar dan cenderung mengalami keausan utama karena gesekan dengan cairan secara berurutan.
Impeller, mechanical seal, shaft, bearing.
Casing, casing cover, bearing housing, shaft.
Cover bearing, bearing housing, casing cover, shaft.
Shaft, bearing housing, bearing cover, shaft keyway.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Komponen dibawah ini yang bukan merupakan type impeller centrifugal pump:
Close type impeller
Semi open type impeller
Fully open type impeller
Gear type impeller
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebutkan dibawah ini yang bukan fungsi mechanical seal dalam sebuah pompa centrifugal di pabrik sawit:
Menjaga pompa mendapatkan tekanan maximal sesuai dengan spesifikasi head pressurenya.
Menjaga operasional pompa tetap vacuum saat pompa stop dan start kembali tanpa perlu priming.
Menjaga lingkungan sekitar pompa bersih dan cairan product tidak menjadi limbah pabrik.
Perlu dipancing (priming) setiap kali start up pompa, walaupun awalnya sudah diisi air priming.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dibawah ini, yang bukan gejala yang bisa merusak dan menurunkan effisiensi sebuah pompa adalah:
Kavitasi
Water Hammer/Back Flow
Turbulence flow
Laminar flow
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebuah centrifugal pump dengan kapasitas 100 m3/jam ; Total Head 40 meter; dengan NPSHR 3,5 meter diperkirakan bisa menghisap air sungai suhu 24°C dari rumah pompa sedalam berapa meter vertical?
12 meter
10 meter
8 meter
5,5 meter
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Berapakah minimum volume priming tank yang harus dibuat bila pipa hisap galvanis berukuran 6” sepanjang 8 meter dari inlet pompa ke foot valve.
Vpt = 1 m3
Vpt = 0,583 m3
Vpt = 0,145 m3
Vpt = 0,29 m3
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