Question
Which statement about the choke in KNX TP power supplies is correct?
Answer
C — Some PSU types have an integrated choke; others need an additional external choke
Correct: The source states exactly this.
Source
KNX Basic Course Documentation — 5.2 — p. 103
All proposed choices (exam context)
- A.Every PSU always requires a separate external choke
- B.A choke is only needed on the 230 V mains side
- C.Some PSU types have an integrated choke; others need an additional external choke✓
- D.Chokes are never used in KNX TP installations
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