There is a need of transformer for__________________?
Correct answer: B. centre-tap full-wave rectifier
- A. half-wave rectifier
- B. centre-tap full-wave rectifier
- C. bridge full-wave rectifier
- D. none of the above
Explanation
A centre-tap full-wave rectifier requires a centre-tapped transformer secondary to provide the two equal, opposite half-cycle voltages. Half-wave and bridge rectifiers can operate without a transformer, although a transformer may still be added for isolation or voltage adjustment.
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