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Eng: Calculate switching period of an PWM inverter if it generates 50 Hz pure sine wave and frequency modulation index is 400 (use m for milli or u for micro)
Est: Leia inverteri lülitusperiood kui ta töötab PWMiga ja tekitab puhast 50 Hz siinust. Sagedusmodulatsiooni indeks on 400 (ühikutes u on mikro ja m on milli)
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