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

60° mode and 120° mode
90° mode and 120° mode
120° mode and 180° mode
120° mode and 240° mode

Correct Answer: 120° mode and 180° mode

Explanation:

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

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