The following data refer to a single-phase transformer: Turn ratio (4:1), R1-6.4 N, Xi=12.5 N, R2=0.5 N, X;=3.2 N. The no-load current = 3.5A leading the flux (9) by 30°. The primary current is 20A and the input voltage is 350V and input power factor 0.75 lagging. Determine by aid of a vector diagram, (i) the load voltage and current, (ii) the load power factor, (iii) the efficiency.

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The following data refer to a single-phase transformer: Turn ratio (4:1), R1=6.4 N,
X1=12.5 N, R2=0.5 N, X;=3.2 N. The no-load current =
3.5A leading the flux (9) by 30°.
The primary curent is 20A and the input voltage is 350V and input power factor 0.75
lagging. Determine by aid of a vector diagram, (i) the load voltage and current, (ii) the
load power factor, (iii) the efficiency.
Transcribed Image Text:The following data refer to a single-phase transformer: Turn ratio (4:1), R1=6.4 N, X1=12.5 N, R2=0.5 N, X;=3.2 N. The no-load current = 3.5A leading the flux (9) by 30°. The primary curent is 20A and the input voltage is 350V and input power factor 0.75 lagging. Determine by aid of a vector diagram, (i) the load voltage and current, (ii) the load power factor, (iii) the efficiency.
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