Question

Consider Figure 3.10 Of the text. The per-unit leakage reactance of transformer $T_1$, given as $0.1p.u$, is based on the name plate ratings of transformer$T_1$.

(a) True (b) False

Short answer

Therefore, correct option is (a): True.

Step-by-step solution

The name plate rating is given on every equipment of the transformer.

Power system is very complex system. in power system every equipment has their own name plate rating and during the analysis it is very difficult to analyse every equipment on their base. It is preferred to choose a common base and per unit impedance of every equipment take care with respect to that common base value.

The per unit reactance of the equipment.

The manufacturer provides the per unit impedance as per the base voltage. Hence per unit reactance of the transformer$T_1$ in the figure is $0.1p.u$based on the name plate rating of the transformer.