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Howmuch current is drawn by theprimary coil of atransformer, which steps down 220V to 44V to operate a device with an impedance of `440Omega`?

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PUNJAB BOARD PREVIOUS YEAR PAPERS-ELECTRICAL DEVICES-EXERSICE
  1. Howmuch current is drawn by theprimary coil of atransformer, which ste...

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  2. How muchcurrent is drawnbytheprimary cojl of atransformer which steps ...

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  3. How much current isdrawnbytheprimarycoilof atransformer, which steps d...

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  4. How much current is drawn bythe primarycoilof atransformer, which step...

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  5. Howmuch current is drawn by theprimary coil of atransformer, which ste...

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  6. Howmuch current is drawn by theprimary coil of atransformer, which ste...

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  7. How transformer is helpful in transferring electric power from generat...

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  8. Ratio of number of turns in primary and secondary coil of 440V-22000V ...

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

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  10. How are the energy losses reducedin a transformer ?

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  11. Draw a labelled diagram of a.c.generator.

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  12. Explain principle and theory of Transformer with the help of diagram.

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  13. Draw the labelled diagram of an a.c.generatpr.Write the principle on w...

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  14. State the principle of electric generator

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  15. Explain principle and theory of Transformer with the help of diagram.

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  16. Draw the labelled diagram of an a.c.generatpr.Write the principle on w...

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  17. Give the principle, construction and labelled diagram of AC generator.

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  18. Give the principle of a transformer, construction of a stepdown transf...

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  19. Give the principle of a transformer, construction of a stepdown transf...

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  20. Why soft iron is used in making the core of a transformer ?

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