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Power Electronics

Q1: The two modes of operation of three phase bridge inverters are known as

A 60° mode and 120° mode

B 90° mode and 120° mode

C 120° mode and 180° mode

D 120° mode and 240° mode

ANS:C - 120° mode and 180° mode

In 180° mode each thyristor conducts for 180° and in 120° mode each thyristor conducts for 120°.



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