Teknologi Material (Bahan)/ Metfis
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University
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Hard
choco mogyhoiter
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25 questions
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1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Deformasi plastis pada baja adalah perubahan bentuk yang....
Bersifat sementara dan dapat kembali ke bentuk semula
Bersifat permanen dan tidak dapat kembali ke bentuk semula
Terjadi hanya pada suhu di bawah titik beku
Tidak dipengaruhi oleh gaya luar
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Modulus elastisitas baja biasanya diukur dalam satuan..............
Pascal (Pa)
Newton (N)
Meter (m)
Kilogram (kg)
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Perubahan panjang per satuan panjang suatu material ketika diberi tegangan disebut...............
Tegangan (stress)
Regangan (strain)
Kekerasan (hardness)
Kekuatan tarik (tensile strength)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pada diagram tegangan-regangan baja, titik di mana material mulai mengalami deformasi plastis disebut............
Titik patah (fracture point)
itik elastis (elastic point)
Titik luluh (yield point)
Titik ultimate (ultimate point)
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Manakah dari berikut ini yang merupakan ciri-ciri baja dengan deformasi yang baik? A. Mudah patah di bawah beban B. Mampu menahan beban besar tanpa mengalami deformasi plastis C. Memiliki modulus elastisitas rendah D. Tidak mengalami perubahan bentuk di bawah beban tinggi
Mudah patah di bawah beban
Memiliki modulus elastisitas rendah
Tidak mengalami perubahan bentuk di bawah beban tinggi
Mampu menahan beban besar tanpa mengalami deformasi plastis
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Struktur butiran pada logam yang terbentuk selama proses pendinginan dikenal sebagai........
Kristal
sel
molekul
atom
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pengujian kekerasan pada logam yang menggunakan intan sebagai penetrator disebut..........
Pengujian Brinell
Pengujian Rockwell
Pengujian Vickers
Pengujian Charpy
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