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1)Why is there phase difference between voltage and current in an a.c. circuit ?. Explain the...

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Electrical Engineering

1)Why is there phase difference between voltage and current inan a.c. circuit ?. Explain the concept of power factor.

2). Discuss the disadvantages of a low power factor.

3. Explain the causes of low power factor of the supplysystem.

4. Discuss the various methods for power factor improvement

5)Write short notes on the following : (i) Power factorimprovement by synchronous condenser (ii) Importance of p.f.improvement (iii) Economics of p.f. improvement

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