Q.

Transformer utilisation factor of a half wave rectifier is                    

A. 0.234
B. 0.279
C. 0.287
D. 0.453
Answer» C. 0.287
Explanation: transformer utilisation factor is the ratio of ac power delivered to load to the dc power rating. this factor indicates effectiveness of transformer usage by rectifier. for a half wave rectifier, it’s low and equal to 0.287.
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