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Identify the graph which correctly reper...

Identify the graph which correctly reperesents the variation of capacitive reactance `X_C` with frequency

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
B
`X_C=1/(omegaC)=1/(2pifC)` or `X_Cprop1/f`
i.e. `X_C` versus `f` graph is a rectangular hyperbola.
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DC PANDEY ENGLISH-ALTERNATING CURRENT-Level - 1 Objective
  1. The current and voltage functions in an AC circuit are i=100 sin 100...

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  2. A capacitor becomes a perfect insulator when the current is

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  3. For an alternating voltave V=10 cos 100 pit volt, the instantenous vol...

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  4. In a purely resistive AC circuit,

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  5. Identify the graph which correctly reperesents the variation of capaci...

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  6. In an AC circuit, the impedance is sqrt3 times the reactance, then the...

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  7. Voltage applied to an AC circuit and current flowing in it is given by...

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  8. A current of 4A flows in a coil when connected to a 12V DC source. If ...

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  9. In the circuit shown in figureure, the reading of the AC ammeter is ...

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  10. An AC voltage is applied acrss a series combination of L and R. If the...

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  11. For wattless power is an AC circuit, the phase angle between the curre...

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  12. The correct variation of resistance R with frequency f is given by

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  13. If L and R be the inductance and resistance of the choke coil, then in...

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  14. When an AC signal of frequency 1 kHz is applied across a coil of resis...

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  15. The frequency of an alternating current is 50 Hz. The minimum time tak...

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  16. The current and voltage functions in an AC circuit are i=100 sin 100...

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  17. In the AC network shown in figureure the rms current flowing through t...

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  18. The figure represents the voltage applied across a pure inductor. The ...

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  19. A steady current of magnitude I and an AC current of peak value I are ...

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  20. A 50 Hz AC source of 20 V is connected across R and C as shown in fig...

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