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A lossy capacitor Cx, rated operation at 5 kV, 50 Hz is represented by an equivalent circuit with an ideal capacitor Cp is parallel with a resistor Rp. The value of Cp is found to be 0.102 μF and the value of Rp = 1.25 MΩ. Then the power loss and tan δ of the lossy capacitor operating at the rated voltage, respectively, are
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- 10 W and 0.0002
- 10 W and 0.0025
- 20 W and 0.025
- 20 W and 0.04
Correct Option: C
| Power - loss = | = 20 W | |||
| RP | 1.25 MΩ |
| tan δ = | ||
| ωCP RP |
| = | = 0.025 | |
| (2π 50)(0.102 × 10-6)(1.25 × 106) |
