UAS PMKR KELAS XII
Quiz
•
Other
•
12th Grade
•
Hard
Rijal Sunarno
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50 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Camshaft berfungsi untuk ….
Merubah gerak naik turun piston (translasi) menjadi gerak putar (rotasi
Menyimpan sementara tenaga putar agar crankshaft dapat berputar melakukan langkah buang, isap dan kompresi
Membuka dan menutup katup-katup (valves) sesuai timing yang ditentukan
Menggerakkan pompa bensin elektrik
Dudukan untuk memasang timing chain
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Diketahui gasoline engine (motor bensin) 4 silinder 4 langkah dengan Firing Order (FO) 1-3-4-2. Jika posisi piston Top 1, maka posisi langkah piston di silinder 4 adalah …..
Akhir langkah buang dan awal langkah isap
Akhir langkah isap dan awal langkah buang
Akhir langkah kompresi dan awal langkah usaha
Akhir langkah usaha dan awal langkah buang
Awal langkah isap dan awal langkah kompresi
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Definisi overlap katup adalah ….
Piston berada pada posisi Titik Mati Atas (TMA), katup masuk dan katup buang menutup
Piston berada di TMA, katup buang masih terbuka (susulan) dan katup masuk sudah mulai terbuka (awalan)
Piston berada di Titik Mati Bawah (TMB), katup masuk masih terbuka dan katup buang sudah mulai menutup
Piston berada di TMB, katup masuk dan katup buang membuka
Piston berada di TMA, katup buang mulai terbuka (awalan) dan katup masuk masih terbuka (susulan)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Perhatikan gambar ilustrasi volume silinder dan volume ruang bakar di atas!
Rumus perbandingan kompresi (Ratio of Compression/Rc) berdasarkan ilustrasi di atas adalah ….
Rc = (V1.V2)/V1
Rc = (V1+V2)/V1
Rc = (V1/V2) + V1
Rc = (V1-V2)/V2
Rc = (V1+V2)/V2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Berikut ini adalah jenis mekanisme katup jenis
Over Head Valve
Over Head Camshaft
Double Over Head Valve
Double Over Head Camshaft
Single Head Camshaft
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Salah satu ciri mesin mengalami kebocoran kompresi pada katup ex/in adalah...
Emisi gas buang pekat
Tenaga mesin menurun
Mesin tidak hidup
Asap knalpot putih
Tenaga mesin stabil
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Loncatan bunga api terjadi pada langkah....
Langkah kompresi
Langkah usaha
Akhir langkah kompresi
Langkah buang
Langkah tenaga
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