
Kuis 3 Material Teknik
Authored by Jhosephine Riscila
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University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Definisi kekerasan dalam bidang keilmuan teknik material adalah ....
Ketahanan material terhadap proses pemesinan
Ketahanan material terhadap gesekan/keausan
Ketahanan material terhadap deformasi plastis lokal
Ketahanan material terhadap goresan
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Metode uji yang dapat digunakan untuk mengukur kekerasan karet adalah ….
Vickers
Knoop
Schleroscope
Durometer
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Berikut merupakan metode pengujian keras dengan prinsip indentasi, kecuali ….
Vickers
Knoop
Mohs
Shore-Durometer
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Indentor diamond pyramid ditekan pada permukaan sampel hingga membentuk indentasi merupakan prinsip dari metode pengujian ….
Brinnel
Rockwell
Vickers
Shore-Durometer
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pengujian keras Brinell tidak valid apabila ….
Sampel memiliki ketebalan 6 kali dari hasil indentasi
Sampel memiliki ketebalan 6 kali dari hasil indentasi
Indentasi kedua dilakukan pada jarak 8 kali diameter indentor terhadap indentasi pertama
Indentasi dilakukan pada jarak 3 kali diameter indentor dari tepi sampel
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Hasil pengujian keras Vickers suatu material adalah 350 HV 20/30.
Angka 30 pada hasil pengujian tersebut memiliki arti ….
Pengujian dilakukan dengan major load 30 kgf
Lama indentasi 30 detik
Pengujian dilakukan dengan beban 30 kgf
Lama indentasi 20 detik
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Hasil dari pengujian kekerasan material tertulis 200 HBW 1/187.5 artinya ….
Lama indentasi 10 - 15 detik
Indentor terbuat dari bola baja
Diameter indentor 1 cm
Beban yang diberikan 187,5 N
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