
3.1 Elektromotor
Authored by Jan Šperling
Physics, Science
7th - 12th Grade
Used 18+ times

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12 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Která síla roztáčí elektromotor?
elektrická
magnetická
elektromagnetická
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Který z uvedených fyziků nepatří mezi ty, kteří přímo přispěli k vynálezu elektromotoru?
Isaac Newton
Hans Christian Ørsted
André-Marie Ampère
Michael Faraday
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Co potřebuje elektromagnet k tomu, aby vytvořil magnetické pole?
feromagnetické jádro
elektrický proud
pohyb
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Co dělá feromagnetický materiál s magnetickým polem?
Nevede ho, může ho oslabovat, nelze jej zmagnetizovat.
Vede ho, může jej zesilovat, lze jej dočasně nebo trvale zmagnetizovat..
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Trvale lze zmagnetizovat látku
magneticky tvrdou
magneticky měkkou
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Ocel, ze které se vyrábí jádro elektromagnetu, musí být
magneticky měkká
magneticky tvrdá
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Ve videu je zmínka o rotačním přepínači s kartáči. Říkáme mu:
stator
rotor
komutátor
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