EMV
Quiz
•
Physics
•
9th Grade
•
Practice Problem
•
Medium
ST EM
Used 17+ times
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8 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Izskaidro, ko nozīmē burti FM, kas redzami uz radiouztvērēja skalas?
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kāpēc radioaparāts vienlaikus neuztver visu raidstaciju raidītos elektro-magnētiskos viļņus?
Tāpēc ka skaļruņi parasti ir 2 vai 1 gab.
No pārslodzes var sabojāt transzistorus.
Svārstību kontūrs var rezonēt tikai uz viena viļņa.
Jo klausoties vairākas stacijas vienlaikus neko nevarēs saprast.
Katrs radioaparāts pēc licences var atskaņot vienu staciju.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kāpēc parastie kompasi nav derīgi Zemes magnētisko polu tuvumā?
Polos ir zema temperatūra
Polos ir augsts spiediens
Rādīs uz visām pusēm
Polos ir jāpērkt kompasu licences
Polos nav EMV
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cik polu var būt magnētam?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dzelzs kravu pārvietošanai izmanto pakavveida elektromagnētus, nevis stieņa elektromagnētus. Kāpēc tā?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ar transformatoru var gan pazemināt, gan palielināt spriegumu.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kāpēc, automašīnai braucot tunelī vai zem dzelzs tilta, tās radioaparāts slikti uztver radiopārraides?
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