Consider Figure 3.25 of the text for a transformer with off-nominal turns ratio.

(i) The per-unit equivalent circuit shown in part (c) contains an ideal transformer which cannot be accommodated by some computer programs.

(a) True

(b) False

(ii) In the \(\pi\)-circuit representation for real \(\mathrm{c}\) in part (d), the admittance parameters \(Y_{11}\) and \(Y_{12}\) would be unequal.

(a) True

(b) False

(iii) For complex \(c\), can the admittance parameters be synthesized with a passive RLC circuit?

(a) Yes

(b) No

Figure 3.25

Transcribed Image Text:

380 a: 1 (a) Single-line diagram + V V Zea 388 b: 1 a, C = 1 b c: 1 (c) Per-unit equivalent circuit (Per-unit impedance is shown) cYea (b) Represented as two transformers in series (1 - c) Yea (c|c)Yea V (d) # circuit representation for real c Per-unit admittances are shown; Yea = + Zeq