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Define capacitive reactance of a capacit...

Define capacitive reactance of a capacitor.

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    PUNJAB BOARD PREVIOUS YEAR PAPERS|Exercise Exercise|132 Videos

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PUNJAB BOARD PREVIOUS YEAR PAPERS-ALTERNATING CURRENTS-EXERSICE
  1. Define inductive reactance of an inductor.

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  2. What is Wattless current ?

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  3. Define capacitive reactance of a capacitor.

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  4. What is an idle current ?

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  5. Define impedance of an a.c. circuit.

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  6. What is the impedance of a circuit ?

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  7. What is impedance of circuit at resonance ?

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  8. For a circuit at resonance, voltage applied is E = E@ sin wt and curre...

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  9. For a circuit at resonance, voltage applied is E = E@ sin wt and curre...

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  10. Define resonant frequency of LCR series circuit.

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  11. Which is more dangerous in use :a.c or d.c. ? Explain, why

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  12. Define root mean square value of an alternating current.

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  13. The frequency of an ac supply is doubled, what happens to inductive re...

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  14. How does capacitive reactance Xc of a capacitor vary in an a.c. and d....

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  15. How does inductive reactance.XL of an inductor vary in d.c.and high fr...

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  16. Define root mean square value of an alternating current.

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  17. Derive an our expressionforthe Power of an L.C.R.alternating current c...

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  18. Derive the relation for mean or average value of alternating current.

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  19. An alternating e.m.f is supplied through apure inductance. Investigate...

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  20. Derive an expression for average power in an LCR a.c. circuit.

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