osnove II kol - VTS NS
osnove II kol - VTS NS
osnove II kol - VTS NS
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Zadatak 3. Električni bojler ima tri spiralna grejača i priključen je na trofazni napon od 380 V.<br />
Snaga bojlera je 3 kW, a faktor snage je 0,9. Izračunati struju koju troši grejač prilikom rada, kao<br />
i prividnu i reaktivnu snagu.<br />
Pitanje 1. Kako se dele feromagnetski materijali Skicirati histerezisne krive njihovog<br />
magnećenja B(H).<br />
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Pitanje 2. Čemu služi voltmetar Kolika treba da bude njegova unutrašnja otpornost i zbog čega<br />
treba da bude tolika<br />
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