Q. Assertion (A): In a parallel circuit having two branches, each branch current may be more than source current.

Reason (R): Calculations in ac circuits use rules of complex algebra.

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Q. Current density J, conductivity σ and electric field E in a conductor are related as

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Q. If a driving point function N(s) = p(s)/q(s), then

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Q. A function f(t) = k e^(at) is __________ for (a > 0).

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Q. The peak factor is the ratio of

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Q. In attenuation band, β is an odd multiple of π.

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Q. In a series RLC circuit, the value of resistance for critical damping is

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Q. Parallel wire transmission line is an example of

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Q. A 2-terminal network consists of one of the RLC elements. The elements is connected to an ac supply. The current through the element is 1 A. When an inductor is inserted in series between the source and the element, the current through the element becomes 2 A. What is this element?

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Q. Consider the following statements for a driving point function F(jω):

1. Re F(jω) is an even function of ω and is 0 or positive for all values of ω.
2. Im F(jω) is an even function of ω and is 0 or positive for all values of ω.
3. Re F(jω) is an odd function of ω and is 0 or negative for all values of ω.
4. Re F(s) = 0 for Re s = 0.

Which one of the statements given above is/are correct?

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Q. Which of following is linear and bilateral parameter?

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Q. Permittivity has the units of F/m.

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Q. A capacitor used for power factor correction in single- phase circuit decreases

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Q. Which one of the following is an active component?

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Q. A h is the unit of quantity of electricity.

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Q. All network theorems of dc are applicable to ac also with different quantities taken as phasors.

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Q. An ac circuit has two branches in parallel. The impedances of the two branches are equal. Their power factors are 0.8 lagging and 0.8 leading. The overall p.f. is

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Q. In a network

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Q. The phase difference between them is __________ degrees.

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Q. Norton's theorem reduces a two terminal network to

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