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Alternating Cur...

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  • Question 1
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    In a LCR circuit having L=8.0 L = 8.0   henry, C=0.5μF C = 0.5 \mu F and R=100 R = 100 ohm in series. The resonance frequency in per second is

  • Question 2
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    The natural frequency of a LC L-C   circuit is equal to

  • Question 3
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    The frequency for which a 5μF 5 \mu F capacitor has a reactance of 11000 \dfrac{1}{1000}  ohm is given by

  • Question 4
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    In a circuit containing an inductance of zero resistance, the e.m.f. of the applied ac voltage leads the current by

  • Question 5
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    If an 8Ω 8\, \Omega   resistance and 6Ω 6 \, \Omega   reactance are present in an ac series circuit then the impedance of the circuit will be

  • Question 6
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    In a pure inductive circuit or In an ac circuit containing inductance only, the current

  • Question 7
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    In pure inductive circuit, the curves between frequency f and reciprocal of inductive reactance 1/XL 1/ X_L is

  • Question 8
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    An oscillator circuit consists of an inductance of 0.5mH0.5 \,mH and a capacitor of 20μF20 \mu F. The resonant frequency of the circuit is nearly

  • Question 9
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    Which of the following curves correctly represents the variation of capacitive reactance XC X_C   with frequency f

  • Question 10
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    The instantaneous values of current and emf in an ac circuit are I=12sin314t I = \dfrac{1}{\sqrt{2}} \, sin \, 314 t amp and E=2  sin(314tπ /6)V E = \sqrt{2}  sin(314 t - \pi / 6)V  respectively. The phase difference between E and I will be

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