
XI TPA CALC
Authored by ROZAQ MUSTOFA LUTFI
Other
11th Grade
Used 4+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Untuk menentukan kecepatan putaran dapat dicari dengan rumus
n = (d. )/(1000.cs)
n = ( .d)/100.
n = 1000.cs / ( .d)
Cs = n. .d/100
Cs = n. .d/1000
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
hitunglah banyaknya putaran (n) spindel mesin frais jika dipakai untuk pengefraisan dengan kecepatan potong (VC) 10 m/menit dan menggunakan pisau frais berdiameter 15 mm maka berapa putarannya
212 rpm
138 rpm
147 rpm
239 rpm
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
tentukan kecepatan putaran mesin yang dipakai untuk mengefrais benda kerja kalian dengan menggunakan kecepatan potong 34 m/menit dan pisau berdiameter 20 mm
382 rpm
283 rpm
374 rpm
271 rpm
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
tentukan kecepatan potong yang dipakai untuk mengefrais benda kerja mild steel dengan menggunakan pisau mantel berdiameter (d) = 10 mm, dan putaran mesin (n) = 500 rpm.
31,4 m / menit
32.9 m / menit
28.8 m / menit
15, 7 m / menit
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui material dari bahan Stainless Steel 304 akan dipotong dengan pisau frais jari (end mill) HSS dengan diameter 10 mm dan jumlah gigi potong (mata potong) = 4 buah dengan kecepatan potong 20 m /menit. berapakah putaran mesinnya
483,4 rpm
386,4 rpm
636,9 rpm
566,4 rpm
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebuah baja lunak berdiameter 60 mm, akan difrais dengan kecepatan putar 300 rpm, besar pisau adalah 15 mm Pertanyaannya adalah: Berapa besar potongnya ?
15,2
10,3
12,2
14,1
13,3
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
lu= 10 mm
l= 20 mm
la = 10 mm
f =0,05
n= 800 rpm
hitung berapa waktu yang diperlukan untuk mengefrais
1,2 menit
1,6 menit
1,1menit
1 menit
1,3 menit
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