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Why is the use of A.C. voltage preferred...

Why is the use of A.C. voltage preferred over D.C. voltage? Give two reasons.

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MODERN PUBLICATION-ALTERNATING CURRENTS-EXERCISE
  1. Why 200 V a.c. more dangerous than 220 V d.c.?

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  2. Why 200 V a.c. more dangerous than 220 V d.c.?

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  3. Why is the use of A.C. voltage preferred over D.C. voltage? Give two r...

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  4. The circuit arrangement given in the figure shows that when an ac. pas...

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  5. The circuit arrangement given in the figure shows that when an ac. pas...

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  6. In India domestic power supply is at 220 V, 50Hz. While in USA it is 1...

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  7. What are the factors which reduce the efficiency of a transformer ?

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  8. How are the energy losses reducedin a transformer ?

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  9. What are the factors which reduce the efficiency of a transformer ?

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  10. Why the core of a transformer made of a magnetic material of high perm...

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  11. Why the core of a transformer made of a magnetic material of high perm...

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  12. A step up transformer converts a low input voltage into a high output ...

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  13. Describe the use of transformer for long distance transmission of a.c.

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  14. A transformer of 100% efficiency has 500 turns in the primary and 10,0...

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  15. Can a trasnformer be helpful in reducing the cost of transmission of e...

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  16. What is the fucntion of a choke coil in fluorescent tube?

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  17. Show that an ideal inductor does not dissipate power in an ac circuit.

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  18. Answer the following questions: Why is choke coil needed in the use of...

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  19. Why is choke preferred to rheostat in controlling a.c. supply.

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  20. Which of the best method of reducing current in an a.c. circuit and wh...

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