Fungsi utama IC LA4285 dalam rangkaian tersebut adalah...

Soal UAS MP juni 2025

Quiz
•
Engineering
•
11th Grade
•
Easy
Al-lika Fadia Lika
Used 1+ times
FREE Resource
40 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 3 pts
Menyaring frekuensi tinggi
Memperkuat sinyal audio input menjadi sinyal output yang mampu menggerakkan speaker
Mengatur daya input dari adaptor
Menyaring tegangan DC
Mengganti fungsi potensiometer
2.
MULTIPLE CHOICE QUESTION
2 mins • 3 pts
Jika salah satu kapasitor elektrolit dicabut dari rangkaian, kemungkinan besar yang terjadi adalah...
Volume audio bertambah
Sinyal audio menjadi lebih jernih
Distorsi suara atau ketidakseimbangan audio
Konsumsi daya meningkat
Rangkaian tetap normal
3.
MULTIPLE CHOICE QUESTION
2 mins • 3 pts
Fungsi potensiometer dalam rangkaian ini adalah...
Menyaring noise
Mengatur level volume input
Menstabilkan tegangan
Mengatur suhu IC
Memperkuat sinyal
4.
MULTIPLE CHOICE QUESTION
2 mins • 3 pts
Jika input audio terlalu lemah, kemungkinan solusi yang paling efektif adalah...
Ganti potensiometer dengan resistor tetap
Ganti speaker dengan impedansi tinggi
Tambahkan pre-amp sebelum input ke IC
Tambahkan kapasitor lebih besar
Ubah tegangan menjadi 5V
5.
MULTIPLE CHOICE QUESTION
2 mins • 3 pts
Power supply yang digunakan harus memenuhi tegangan minimum karena...
Menghemat listrik
Menurunkan frekuensi
Mengaktifkan IC dengan tegangan kerja minimum
Meningkatkan efisiensi input
Mengatur potensi output
6.
MULTIPLE CHOICE QUESTION
2 mins • 3 pts
Jika tegangan power supply hanya 9V, kemungkinan suara speaker akan...
Lebih kuat
Lebih jernih
Distorsi dan volume rendah
Lebih tinggi frekuensinya
Tetap normal
7.
MULTIPLE CHOICE QUESTION
2 mins • 3 pts
Speaker kanan tidak bersuara, kemungkinan penyebab paling logis adalah...
Potensiometer rusak
Power supply terlalu tinggi
Jalur output speaker kanan putus
IC rusak total
Kapasitor input terlalu kecil
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