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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

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The correct Answer is:
D
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DISHA PUBLICATION-ALTERNATING CURRENT -Exercise - 1 : CONCEPT BUILDER (Topic 2: A.C Circuits and Power Factor)
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  3. Which increase in frequency of an AC supply , the impedance of an L-C-...

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  5. An ideal coil of 10H is connected in series with a resistance of 5(Ome...

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  6. In an LR-circuit, the inductive reactance is equal to the resistance R...

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  7. An inductance L having a resistance R is connected to an alternating s...

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  8. For the circuit shown in the fig., the current through the inductor is...

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  9. In a series combination of R, L and C to an A.C. Source at resonance i...

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  10. A coil of 40 H inductance is connected in series with a resistance of ...

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  11. For a series RLC circuit R=X(L)=2X(C). The impedence of the current an...

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  12. A current of 4 A flows in a coil when connected to a 12 V dc source. I...

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  13. In the circuit shown in fig. X(C ) = 100 Omega,(XL)=200 Omega and R=10...

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  14. An e.m.f. of 15 volt is applied in a circuit containing 5 henry induct...

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  15. An alternating voltage is connected in series with a resistance R and ...

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  16. When an AC source of emf e=E(0) sin(100t) is connected across a circui...

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  17. In an L-C -R series circuit connected to an AC source V=V(0)sin(100pi(...

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  18. An ac generator G with adjustable frequency of oscillation is used in ...

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  19. In the circuit given below, what will be the reading of the voltmeter?

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  20. Two identical incandescent light bulbs are connected as shown in figur...

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