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What is impedance of circuit at resonanc...

What is impedance of circuit at resonance ?

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What is the impedance of a circuit ?

A 230 V variable frequency source is connected across a series combination of L=5 H, C = 80muiF,R = 40Omega calculate Impedence of the circuit at resonance

A 60muF capacitor, a 0.3H inductor and a 50Omega resistor are connected in series with a 120V-60Hz a.c. source. Calculate the impedance of the circuit and current flowing in the circuit.

What do you mean by impedance of a circuit?

Derive a relation for the impedance of LCR circuit. What is the relationship between the current and e.m.f. in LCR circuit.

PUNJAB BOARD PREVIOUS YEAR PAPERS-ALTERNATING CURRENTS-EXERSICE
  1. Define impedance of an a.c. circuit.

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  2. What is the impedance of a circuit ?

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  3. What is impedance of circuit at resonance ?

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

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

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  6. Define resonant frequency of LCR series circuit.

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

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

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

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

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

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

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

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

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

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

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  17. Prove mathematically that the average value of alternating current ove...

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  18. Derive the expression for the impedance of an a.c. circuit with an ind...

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

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  20. What do you mean by the average value of a.c. ? Derive the expression ...

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