LÝ 50C ĐẦU
Quiz
•
Other
•
9th - 12th Grade
•
Medium
Vy Phương
Used 2+ times
FREE Resource
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50 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1: Máy phát thanh vô tuyến đơn giản không có bộ phận nào sau đây?
A. Mạch biến điệu
B. Mạch phát sóng cao tần
C. Mạch tách sóng.
D. Mạch khuếch đại
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3:
Mạch dao động: độ tự cảm 4 μH; điện dung 1 nF. Lấy π2 = 10. Tần số dao động của mạch là
A. 25 MHz.
B. 2,5 kHz.
C. 25 kHz.
D. 2,5 MHz
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A. có phương song song và ngược chiều.
B. có phương trùng với phương truyền sóng.
C. có phương vuông góc với nhau và vuông góc với phương truền sóng.
D. có phương song song và cùng chiều.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
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