
PTM I B
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25 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 4 pts
Kemampuan suatu material dalam menerima energi mekanik disebut...
Keuletan
Kekuatan
Kekakuan
2.
MULTIPLE CHOICE QUESTION
10 sec • 4 pts
Pilihlah pasangan pengertian dan sifat mekanik yang paling tepat di antara pilihan berikut...
Stiffness, kemampuan material untuk kembali ke bentuk semula setelah mengalami deformasi plastis
Strength, kemampuan material menahan gaya tanpa mengalami deformasi elastis
Toughness, kemampuan material menyerap energi hingga patah tanpa mengalami deformasi
Ductility, kemampuan material mengalami regangan besar sebelum patah
3.
MULTIPLE CHOICE QUESTION
10 sec • 4 pts
Regangan (strain) yang terjadi pada saat pengujian Tarik dapat dihitung berdasarkan perubahan…
Panjang awal dan panjang sesaat spesimen
Luas penampang dan gaya tarik
Waktu dan suhu pengujian
Kecepatan tarikan dan panjang total
4.
MULTIPLE CHOICE QUESTION
10 sec • 4 pts
Perhatikan diagram TTT, Huruf A, B, dan C menunjukkan daerah transformasi fasa struktur yang terjadi selama pendinginan dari fasa austenite. Manakah pernyataan yang paling tepat mengenai fasa struktur yang terbentuk pada tiap daerah?
A = Ferrit, B = Perlit, C = Bainit
A = Martensit, B = Bainit, C = Perlit
A= Perlit, B= Bainit, C= Martensit
A = Austenit, B = Perlit, C = Martensit
A = Perlit, B = Ferrit, C = Martensit
5.
MULTIPLE CHOICE QUESTION
10 sec • 4 pts
Proses Mounting pada sampel Uji Metalografi ditujukkan untuk..
Menjaga sampel dari kerusakan
Memperluas area analisis
Memudahkan proses pengamplasan
Menjadikan sampel lebih bagus
6.
MULTIPLE CHOICE QUESTION
10 sec • 4 pts
Preparation proses pada sampel Uji Metalografi yang benar adalah..
Cutting, Mounting, Pholishing, Grinding, Etching
Cutting, Mounting, Grinding, Polishing
Grinding, Cutting, Mounting, Polishing, Etching
Cutting, Mounting, Grinding, Polishing, Etching
7.
MULTIPLE CHOICE QUESTION
10 sec • 4 pts
Persamaan disamping merupakan persamaan dari pengujian...
Rockwell
Brinell
Vickers
Knopp
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