
Soal Pemesinan Konvensional
Quiz
•
Other
•
12th Grade
•
Hard
A. L. Andriana Syarip
Used 7+ times
FREE Resource
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50 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Saat melakukan pembubutan ulir, faktor yang paling berpengaruh terhadap ketelitian ulir adalah…
Kedalaman pemakanan
Jumlah langkah ulir
Kekakuan mesin dan pahat
Jenis pendingin yang digunakan
Panjang benda kerja
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Jika kecepatan potong terlalu tinggi pada proses pembubutan baja karbon, maka efek yang mungkin terjadi adalah…
Permukaan semakin halus
Pahat lebih awet
Terjadi keausan cepat pada pahat
Muncul getaran yang stabil
Ulir semakin presisi
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Seorang operator ingin memperoleh hasil pembubutan dengan kekasaran rendah. Strategi yang tepat adalah…
Memperbesar kedalaman potong
Mengurangi kecepatan potong
Menggunakan pahat dengan sudut rake besar
Tidak menggunakan cairan pendingin
Menambah feeding rate
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Jika diameter benda kerja 60 mm dan kecepatan potong yang dianjurkan 30 m/menit, maka putaran spindle (n) mendekati…
100 rpm
160 rpm
250 rpm
500 rpm
600 rpm
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Pahat HSS lebih cocok digunakan pada…
Kecepatan potong tinggi
Material keras
Material lunak dengan putaran rendah
Mesin CNC
Proses bubut ulir dalam
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Jika terjadi getaran berlebih (chatter) saat proses bubut, tindakan paling efektif adalah…
Memperbesar kecepatan potong
Memperkecil feeding rate
Menggunakan pendingin lebih banyak
Memendekkan panjang benda kerja yang menjulur
Menajamkan ulang pahat
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Pada pembubutan tirus dengan compound rest, sudut compound harus diatur berdasarkan…
Sudut utama pahat
Sudut kemiringan tirus
Diameter benda kerja
Kecepatan potong
Kekasaran permukaan
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