ATPL Aircraft General Knowledge Practice Questions - Sri Lanka CAA ATPL(A) Aircraft General Knowledge Examination Exam

What is the primary function of a Transformer Rectifier Unit (TRU) in an aircraft electrical system?

To convert 28 V DC power to 115 V AC power To step down 115 V AC power and convert it to 28 V DC power To convert variable frequency AC power to constant frequency AC power To step up 28 V DC power to 115 V DC power

Correct Answer:

To step down 115 V AC power and convert it to 28 V DC power

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