
Soal STS Bubut kelas XII Smt 1 24/25

Quiz
•
Other
•
12th Grade
•
Hard
Imam Saputro
Used 4+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pahat bubut yang paling sesuai untuk membuat ulir trapesium adalah...
Pahat bubut rata
Pahat bubut bentuk trapesium
Pahat bubut ulir bersudut 55˚
Pahat bubut alur
Pahat bubut tirus
2.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Faktor utama yang mempengaruhi kualitas permukaan hasil bubutan adalah...
Kecepatan putar spindle
Kedalaman pemakanan
Jumlah mata pahat
Bahan benda kerja
Harga mesin bubut
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tujuan dari pemberian pelumas pada proses pembubutan adalah...
Meningkatkan suhu potong
Mempercepat keausan pahat
Mempermudah pelepasan serbuk gergaji
Memperkecil gaya potong
Mencegah supaya pahat tidak cepat aus
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pada proses pembuatan ulir, istilah "pitch" merujuk pada...
Jarak antara dua puncak ulir yang berurutan
Diameter ulir
Sudut helix ulir
Jumlah ulir per inci
Kedalaman ulir
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pahat bubut yang digunakan untuk membuat alur melingkar pada benda kerja adalah...
Pahat bubut rata
Pahat bubut bentuk
Pahat bubut alur
Pahat bubut tirus
Pahat bubut ulir
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pada sebuah gambar kerja tertulis M 14 x 1,25, maka maksud ukuran tersebut adalah:
M macam ulir, 14 jumlah ulir, 1,25 besar ulir
M momen, 14 diameter luar, 1,25 kisar
M metris, 14 diameter terbesar, 1,25 kisar
M metris, 14 diameter dalam, 1,25 kisar
M metris, 14 diameter terkecil, 1,25 kisar
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Putaran mesin yang cocok untuk benda kerja berdiameter 30 mm dari bahan St 37 dengan Cs = 80 m/menit adalah:
220 rpm
470 rpm
775 rpm
849 rpm
2000 rpm
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