Q. Which of the following graphs in figure correctly represents the variation of capacitive reactance with frequency?

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Q. In figure the effective resistance faced by voltage source is

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Q. For the given circuit, the current I is

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Q. In the graph of figure, the total number of trees is

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Q. Hysteresis loss is proportional to

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Q. Two independence parameters Z11 and Z12 of the two-port network in the figure are

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Q. The Laplace transform of i(t) is given by following equation. As t → ∞ the value of i(t), tends to

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Q. In the network of figure it is desired that maximum power be supplied to Z2. The values of Z1 and Z2 are fixed. However the transformation ratio 'a' of transformer can be changed. The value of 'a' for maximum power transfer is

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Q. If L [f(t)] = F(s), Lf(t - T)

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Q. The transfer function of a system is given by H(s) = 1/s² (s - 2). The impulse response of the system is

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Q. When iron rod is magnetised by the flowing through its coil, the polarities of its different points will be

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Q. In a series R-L circuit when excited by a 1 volt battery the current is 1 - e¯ᵗ. If it is excited by a source 2 sin t, the current will be

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Q. Consider the following expression for the driving point impedance

1. It represent on LC circuit
2. It represent on RLC circuit
3. It has poles lying on the jω axis
4. It has a pole at infinite frequency and a zero at zero frequency.

Which one of the statement given above are correct?

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Q. The polarities of the magnetised iron rod of are

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Q. For node 2 in figure, KCL equation is

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Q. Which one of the following is positive real function?

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Q. If admittance of a circuit is defined by following equation, then at resonance

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Q. If impedance of a circuit is defined by the following equation, then circuit is said to be in resonance if

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Q. In figure, the current I

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Q. An RLC series circuit is excited by a step voltage E. The initial current through L is i (0-). In the s domain circuit the element L will be replaced by

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