
Quiz Pengelasan GMAW
Authored by MUHARDI YOSMAN
Engineering
11th Grade
Used 1+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 5 pts
Apa fungsi utama dari gas pelindung pada proses GMAW?
Memberi warna pada hasil las
Mencegah logam dasar meleleh
Melindungi logam cair dari kontaminasi udara
Mempercepat proses pendinginan
2.
MULTIPLE CHOICE QUESTION
20 sec • 6 pts
Mode transfer logam yang cocok untuk pengelasan posisi vertikal adalah...
Short Circuit Transfer
Spray Transfer
Globular Transfer
Plasma Transfer
3.
MULTIPLE CHOICE QUESTION
20 sec • 6 pts
Apa yang harus dilakukan jika hasil pengelasan menunjukkan porositas?
Gunakan arus lebih tinggi
Bersihkan permukaan logam dan atur gas pelindung
Percepat pengelasan
Gunakan kawat las berdiameter besar
4.
MULTIPLE CHOICE QUESTION
20 sec • 7 pts
Jenis cacat yang terjadi karena logam las tidak menembus seluruh tebal sambungan disebut...
Undercut
Incomplete Penetration
Porosity
Spatter
5.
MULTIPLE CHOICE QUESTION
20 sec • 7 pts
Jika kamu ingin merancang sambungan yang kuat dan tahan beban, maka posisi terbaik untuk pengelasan GMAW adalah...
Di bawah air
Datar (1G/1F)
Vertikal naik
Di atas kepala (overhead)
6.
MULTIPLE CHOICE QUESTION
20 sec • 7 pts
Ketika muncul banyak spatter saat pengelasan, penyebab yang paling mungkin adalah...
Tegangan terlalu tinggi atau jarak elektroda terlalu jauh
Gas pelindung terlalu dingin
Kawat las terlalu pendek
Permukaan logam terlalu halus
7.
MULTIPLE CHOICE QUESTION
20 sec • 7 pts
Salah satu keuntungan utama dari GMAW dibandingkan SMAW adalah...
Menghasilkan lebih banyak slag
Tidak butuh kawat pengisi
Proses lebih cepat dan efisien
Tidak butuh pelindung mata
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