Electrical Machine I
ENEE 202
Question
2081 ChaitraChapter 2: Transformer2.11 Losses and Efficiency of 1-Phase Transformer, All Day Efficiency
Daily loading of a 150 kVA transformer having iron loss of $400\ \text{W}$ and full load copper loss of $1700\ \text{W}$ is given below.
| Time | Load (kW) | Power factor |
|---|---|---|
| 6:00 – 10:00 | 50 | 0.9 |
| 10:00 – 17:00 | 60 | 0.85 |
| 17:00 – 21:00 | 70 | 0.8 |
| 21:00 – 6:00 | 10 | 0.95 |
Determine the all-day efficiency of the transformer.
Add an answerChecking contribution access...