
Difuzorul
Quiz
•
Physics, Computers
•
1st - 5th Grade
•
Practice Problem
•
Medium
lya stecalovici
Used 2+ times
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8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Difuzorul este un traductor electrodinamic care transformă semnalele audio electrice în vibrații pe care le percepem ca sunete.
Adevarat
Fals
2.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
Prin ce sisteme se poate face transformarea?
electromagnetic
electrodinamic
piezoelectric
electrostatic
electroenergic
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un difuzor audio convertește un curent electric în sunet (transformând energia electrică în energie acustică) prin folosirea a două componente principale: un magnet și o bobină de sârmă.
Adevarat
Fals
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sistemul electromagnetic se bazeaza pe:
Actiunea campului magnetic alternativ
Curentul electric de audiofrecvență
Elementulpiezoelectric
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Sistemul electrostatic este format din:
electrod fix
electrod de sudare
electrod mobil
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Frecvența proprie a unui difuzor este cea mai joasă frecvență pe care acesta poate să o reproducă.
Fals
Adevarat
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In ce an a aparut primul difuzor?
1891
1876
1901
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