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Which increase in frequency of an AC sup...

Which increase in frequency of an AC supply , the impedance of an L-C-R series circuit

A

remains constant

B

increases

C

decreases

D

decreases at first becomes minimum and then increases

Text Solution

Verified by Experts

The correct Answer is:
D
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NIKITA PUBLICATION-ELECTROMAGNETIC INDUCTION-MCQs
  1. At resonance, the source current is

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  2. In an LCR series ac circuit the voltage across L,C and R are V(1), V(2...

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  3. Which increase in frequency of an AC supply , the impedance of an L-C-...

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  4. An AC source is connected in parallel with an L-C-R circuit as shown.L...

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  5. The frequency of A.C. is 50 Hz. How many times the current becomes zer...

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  6. At resonance the peak value of current in a series LCR circuit is

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  7. In a series LCR circuit, the voltage across the inductance and capacit...

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  8. In an LCR series ac circuit, the current is

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  9. In a series LCR circuit, at resonance the

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  10. In an LCR series circuit the capacitance is changed from C to 4C For t...

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  11. In an AC circuit X(C)=X(L). The phase differe3nce between the current ...

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  12. A resistor, a capacitor and inductor are connected in series with a so...

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  13. In a LCR series circuit, if the phase difference between applied volta...

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  14. The series RLC circuit in resonance is called:

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  15. In series resonant circuit, at resonance,

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  16. In series LCR circuit at resonance,

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  17. Power factor in a series R-L-C resonant circuit is

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  18. At resonance series/parallel resonant circuit acts as purely

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  19. In resonant circuit, at resonant frequency

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  20. Resonant frequency is given by (for a series L-C-R circuit)

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